diff --git a/.travis.yml b/.travis.yml
index 9b729ec..e859cbb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -28,24 +28,9 @@
       script:
         - tests/scripts/all.sh -k test_full_cmake_gcc_asan
 
-    - name: macOS
-      os: osx
-      compiler: clang
-      script:
-        - tests/scripts/all.sh -k test_default_out_of_box
-
     - name: Windows
       os: windows
-      before_install:
-        - choco install python --version=3.5.4
-      env:
-        # Add the directory where the Choco package goes
-        - PATH=/c/Python35:/c/Python35/Scripts:$PATH
       script:
-        - type python; python --version
-        - python scripts/generate_psa_constants.py
-        # Logs appear out of sequence on Windows. Give time to catch up.
-        - sleep 5
         - scripts/windows_msbuild.bat v141 # Visual Studio 2017
 
 after_failure:
diff --git a/ChangeLog.d/ecp-window-size.txt b/ChangeLog.d/ecp-window-size.txt
new file mode 100644
index 0000000..909d4e8
--- /dev/null
+++ b/ChangeLog.d/ecp-window-size.txt
@@ -0,0 +1,3 @@
+Changes
+   * Reduce the default value of MBEDTLS_ECP_WINDOW_SIZE. This reduces RAM usage
+     during ECC operations at a negligible performance cost.
diff --git a/ChangeLog.d/fix-ssl-cf-hmac-alt.txt b/ChangeLog.d/fix-ssl-cf-hmac-alt.txt
new file mode 100644
index 0000000..57ffa02
--- /dev/null
+++ b/ChangeLog.d/fix-ssl-cf-hmac-alt.txt
@@ -0,0 +1,5 @@
+Bugfix
+   * Fix a regression introduced in 2.24.0 which broke (D)TLS CBC ciphersuites
+     (when the encrypt-then-MAC extension is not in use) with some ALT
+     implementations of the underlying hash (SHA-1, SHA-256, SHA-384), causing
+     the affected side to wrongly reject valid messages. Fixes #4118.
diff --git a/ChangeLog.d/issue4176.txt b/ChangeLog.d/issue4176.txt
new file mode 100644
index 0000000..ddca37f
--- /dev/null
+++ b/ChangeLog.d/issue4176.txt
@@ -0,0 +1,3 @@
+Bugfix
+   * Fix a resource leak in a test suite with an alternative AES
+     implementation. Fixes #4176.
diff --git a/ChangeLog.d/mbed-can-do-timing.txt b/ChangeLog.d/mbed-can-do-timing.txt
new file mode 100644
index 0000000..d83da02
--- /dev/null
+++ b/ChangeLog.d/mbed-can-do-timing.txt
@@ -0,0 +1,3 @@
+Bugfix
+   * Remove outdated check-config.h check that prevented implementing the
+     timing module on Mbed OS. Fixes #4633.
diff --git a/ChangeLog.d/mbedtls_debug_print_mpi.txt b/ChangeLog.d/mbedtls_debug_print_mpi.txt
new file mode 100644
index 0000000..d1b4f5b
--- /dev/null
+++ b/ChangeLog.d/mbedtls_debug_print_mpi.txt
@@ -0,0 +1,5 @@
+Bugfix
+   * Fix a crash in mbedtls_mpi_debug_mpi on a bignum having 0 limbs. This
+     could notably be triggered by setting the TLS debug level to 3 or above
+     and using a Montgomery curve for the key exchange. Reported by lhuang04
+     in #4578. Fixes #4608.
diff --git a/ChangeLog.d/mpi_exp_mod-zero.txt b/ChangeLog.d/mpi_exp_mod-zero.txt
new file mode 100644
index 0000000..9df9031
--- /dev/null
+++ b/ChangeLog.d/mpi_exp_mod-zero.txt
@@ -0,0 +1,7 @@
+Bugfix
+   * Fix a null pointer dereference when mbedtls_mpi_exp_mod() was called with
+     A=0 represented with 0 limbs. Up to and including Mbed TLS 2.26, this bug
+     could not be triggered by code that constructed A with one of the
+     mbedtls_mpi_read_xxx functions (including in particular TLS code) since
+     those always built an mpi object with at least one limb.
+     Credit to OSS-Fuzz. Fixes #4641.
diff --git a/ChangeLog.d/mpi_gcd-0.txt b/ChangeLog.d/mpi_gcd-0.txt
new file mode 100644
index 0000000..41e11e1
--- /dev/null
+++ b/ChangeLog.d/mpi_gcd-0.txt
@@ -0,0 +1,4 @@
+Bugfix
+   * Fix mbedtls_mpi_gcd(G,A,B) when the value of B is zero. This had no
+     effect on Mbed TLS's internal use of mbedtls_mpi_gcd(), but may affect
+     applications that call mbedtls_mpi_gcd() directly. Fixes #4642.
diff --git a/ChangeLog.d/mpi_random.txt b/ChangeLog.d/mpi_random.txt
new file mode 100644
index 0000000..9e6a416
--- /dev/null
+++ b/ChangeLog.d/mpi_random.txt
@@ -0,0 +1,3 @@
+Features
+   * The new function mbedtls_mpi_random() generates a random value in a
+     given range uniformly.
diff --git a/ChangeLog.d/mpi_read_negative_zero.txt b/ChangeLog.d/mpi_read_negative_zero.txt
index e338de7..3285769 100644
--- a/ChangeLog.d/mpi_read_negative_zero.txt
+++ b/ChangeLog.d/mpi_read_negative_zero.txt
@@ -1,3 +1,7 @@
 Bugfix
-   * mbedtls_mpi_read_string on "-0" produced an MPI object that was not treated
-     as equal to 0 in all cases. Fix it to produce the same object as "0".
+   * Fix some cases in the bignum module where the library constructed an
+     unintended representation of the value 0 which was not processed
+     correctly by some bignum operations. This could happen when
+     mbedtls_mpi_read_string() was called on "-0", or when
+     mbedtls_mpi_mul_mpi() and mbedtls_mpi_mul_int() was called with one of
+     the arguments being negative and the other being 0. Fixes #4643.
diff --git a/ChangeLog.d/mpi_read_zero.txt b/ChangeLog.d/mpi_read_zero.txt
new file mode 100644
index 0000000..0c25159
--- /dev/null
+++ b/ChangeLog.d/mpi_read_zero.txt
@@ -0,0 +1,9 @@
+Changes
+   * mbedtls_mpi_read_binary(), mbedtls_mpi_read_binary_le() and
+     mbedtls_mpi_read_string() now construct an mbedtls_mpi object with 0 limbs
+     when their input has length 0. Note that this is an implementation detail
+     and can change at any time, so this change should be transparent, but it
+     may result in mbedtls_mpi_write_binary() or mbedtls_mpi_write_string()
+     now writing an empty string where it previously wrote one or more
+     zero digits when operating from values constructed with an mpi_read
+     function and some mpi operations.
diff --git a/ChangeLog.d/one-shot-mac.txt b/ChangeLog.d/one-shot-mac.txt
new file mode 100644
index 0000000..112891d
--- /dev/null
+++ b/ChangeLog.d/one-shot-mac.txt
@@ -0,0 +1,3 @@
+Features
+   * Implement psa_mac_compute() and psa_mac_verify() as defined in the
+     PSA Cryptograpy API 1.0.0 specification.
diff --git a/ChangeLog.d/psa-rsa-verify-alt-fix.txt b/ChangeLog.d/psa-rsa-verify-alt-fix.txt
new file mode 100644
index 0000000..74804ca
--- /dev/null
+++ b/ChangeLog.d/psa-rsa-verify-alt-fix.txt
@@ -0,0 +1,7 @@
+Bugfix
+   * psa_verify_hash() was relying on implementation-specific behavior of
+     mbedtls_rsa_rsassa_pss_verify() and was causing failures in some _ALT
+     implementations. This reliance is now removed. Fixes #3990.
+   * Disallow inputs of length different from the corresponding hash when
+     signing or verifying with PSA_ALG_RSA_PSS (The PSA Crypto API mandates
+     that PSA_ALG_RSA_PSS uses the same hash throughout the algorithm.)
diff --git a/ChangeLog.d/psa_key_derivation-bad_workflow.txt b/ChangeLog.d/psa_key_derivation-bad_workflow.txt
new file mode 100644
index 0000000..7fd03e6
--- /dev/null
+++ b/ChangeLog.d/psa_key_derivation-bad_workflow.txt
@@ -0,0 +1,3 @@
+Bugfix
+   * Fix PSA_ALG_TLS12_PRF and PSA_ALG_TLS12_PSK_TO_MS being too permissive
+     about missing inputs.
diff --git a/ChangeLog.d/random-range.txt b/ChangeLog.d/random-range.txt
new file mode 100644
index 0000000..dc35ec6
--- /dev/null
+++ b/ChangeLog.d/random-range.txt
@@ -0,0 +1,4 @@
+Security
+* Fix a bias in the generation of finite-field Diffie-Hellman-Merkle (DHM)
+  private keys and of blinding values for DHM and elliptic curves (ECP)
+  computations. Reported by FlorianF89 in #4245.
diff --git a/ChangeLog.d/winsock.txt b/ChangeLog.d/winsock.txt
new file mode 100644
index 0000000..0b42e69
--- /dev/null
+++ b/ChangeLog.d/winsock.txt
@@ -0,0 +1,4 @@
+Bugfix
+   * Fix mbedtls_net_poll() and mbedtls_net_recv_timeout() often failing with
+     MBEDTLS_ERR_NET_POLL_FAILED on Windows. Fixes #4465.
+
diff --git a/include/mbedtls/bignum.h b/include/mbedtls/bignum.h
index 637360e..f087035 100644
--- a/include/mbedtls/bignum.h
+++ b/include/mbedtls/bignum.h
@@ -871,6 +871,44 @@
                      int (*f_rng)(void *, unsigned char *, size_t),
                      void *p_rng );
 
+/** Generate a random number uniformly in a range.
+ *
+ * This function generates a random number between \p min inclusive and
+ * \p N exclusive.
+ *
+ * The procedure complies with RFC 6979 §3.3 (deterministic ECDSA)
+ * when the RNG is a suitably parametrized instance of HMAC_DRBG
+ * and \p min is \c 1.
+ *
+ * \note           There are `N - min` possible outputs. The lower bound
+ *                 \p min can be reached, but the upper bound \p N cannot.
+ *
+ * \param X        The destination MPI. This must point to an initialized MPI.
+ * \param min      The minimum value to return.
+ *                 It must be nonnegative.
+ * \param N        The upper bound of the range, exclusive.
+ *                 In other words, this is one plus the maximum value to return.
+ *                 \p N must be strictly larger than \p min.
+ * \param f_rng    The RNG function to use. This must not be \c NULL.
+ * \param p_rng    The RNG parameter to be passed to \p f_rng.
+ *
+ * \return         \c 0 if successful.
+ * \return         #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
+ * \return         #MBEDTLS_ERR_MPI_BAD_INPUT_DATA if \p min or \p N is invalid
+ *                 or if they are incompatible.
+ * \return         #MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if the implementation was
+ *                 unable to find a suitable value within a limited number
+ *                 of attempts. This has a negligible probability if \p N
+ *                 is significantly larger than \p min, which is the case
+ *                 for all usual cryptographic applications.
+ * \return         Another negative error code on failure.
+ */
+int mbedtls_mpi_random( mbedtls_mpi *X,
+                        mbedtls_mpi_sint min,
+                        const mbedtls_mpi *N,
+                        int (*f_rng)(void *, unsigned char *, size_t),
+                        void *p_rng );
+
 /**
  * \brief          Compute the greatest common divisor: G = gcd(A, B)
  *
diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index a6545ab..ce25bd0 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -55,9 +55,8 @@
 #endif
 #endif /* _WIN32 */
 
-#if defined(TARGET_LIKE_MBED) && \
-    ( defined(MBEDTLS_NET_C) || defined(MBEDTLS_TIMING_C) )
-#error "The NET and TIMING modules are not available for mbed OS - please use the network and timing functions provided by mbed OS"
+#if defined(TARGET_LIKE_MBED) && defined(MBEDTLS_NET_C)
+#error "The NET module is not available for mbed OS - please use the network functions provided by Mbed OS"
 #endif
 
 #if defined(MBEDTLS_DEPRECATED_WARNING) && \
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index d0e61c5..1ae5125 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -3617,7 +3617,7 @@
 
 /* ECP options */
 //#define MBEDTLS_ECP_MAX_BITS             521 /**< Maximum bit size of groups */
-//#define MBEDTLS_ECP_WINDOW_SIZE            6 /**< Maximum window size used */
+//#define MBEDTLS_ECP_WINDOW_SIZE            4 /**< Maximum window size used */
 //#define MBEDTLS_ECP_FIXED_POINT_OPTIM      1 /**< Enable fixed-point speed-up */
 
 /* Entropy options */
diff --git a/include/mbedtls/ecp.h b/include/mbedtls/ecp.h
index b974e59..1e614ed 100644
--- a/include/mbedtls/ecp.h
+++ b/include/mbedtls/ecp.h
@@ -258,7 +258,8 @@
 #if !defined(MBEDTLS_ECP_WINDOW_SIZE)
 /*
  * Maximum "window" size used for point multiplication.
- * Default: 6.
+ * Default: a point where higher memory usage yields disminishing performance
+ *          returns.
  * Minimum value: 2. Maximum value: 7.
  *
  * Result is an array of at most ( 1 << ( MBEDTLS_ECP_WINDOW_SIZE - 1 ) )
@@ -275,7 +276,7 @@
  *      224       475     475     453     398     342
  *      192       640     640     633     587     476
  */
-#define MBEDTLS_ECP_WINDOW_SIZE    6   /**< The maximum window size used. */
+#define MBEDTLS_ECP_WINDOW_SIZE    4   /**< The maximum window size used. */
 #endif /* MBEDTLS_ECP_WINDOW_SIZE */
 
 #if !defined(MBEDTLS_ECP_FIXED_POINT_OPTIM)
@@ -466,8 +467,7 @@
 
 /**
  * \brief           This function retrieves the information defined in
- *                  mbedtls_ecp_curve_info() for all supported curves in order
- *                  of preference.
+ *                  mbedtls_ecp_curve_info() for all supported curves.
  *
  * \note            This function returns information about all curves
  *                  supported by the library. Some curves may not be
diff --git a/include/mbedtls/rsa.h b/include/mbedtls/rsa.h
index b4c9a04..991026e 100644
--- a/include/mbedtls/rsa.h
+++ b/include/mbedtls/rsa.h
@@ -976,12 +976,14 @@
  * \brief          This function performs a PKCS#1 v2.1 PSS signature
  *                 operation (RSASSA-PSS-SIGN).
  *
- * \note           The \p hash_id in the RSA context is the one used for the
- *                 encoding. \p md_alg in the function call is the type of hash
- *                 that is encoded. According to <em>RFC-3447: Public-Key
+ * \note           The \c hash_id set in \p ctx (when calling
+ *                 mbedtls_rsa_init() or by calling mbedtls_rsa_set_padding()
+ *                 afterwards) selects the hash used for the
+ *                 encoding operation and for the mask generation function
+ *                 (MGF1). For more details on the encoding operation and the
+ *                 mask generation function, consult <em>RFC-3447: Public-Key
  *                 Cryptography Standards (PKCS) #1 v2.1: RSA Cryptography
- *                 Specifications</em> it is advised to keep both hashes the
- *                 same.
+ *                 Specifications</em>.
  *
  * \note           This function enforces that the provided salt length complies
  *                 with FIPS 186-4 §5.5 (e) and RFC 8017 (PKCS#1 v2.2) §9.1.1
@@ -1029,12 +1031,14 @@
  * \brief          This function performs a PKCS#1 v2.1 PSS signature
  *                 operation (RSASSA-PSS-SIGN).
  *
- * \note           The \p hash_id in the RSA context is the one used for the
- *                 encoding. \p md_alg in the function call is the type of hash
- *                 that is encoded. According to <em>RFC-3447: Public-Key
+ * \note           The \c hash_id set in \p ctx (when calling
+ *                 mbedtls_rsa_init() or by calling mbedtls_rsa_set_padding()
+ *                 afterwards) selects the hash used for the
+ *                 encoding operation and for the mask generation function
+ *                 (MGF1). For more details on the encoding operation and the
+ *                 mask generation function, consult <em>RFC-3447: Public-Key
  *                 Cryptography Standards (PKCS) #1 v2.1: RSA Cryptography
- *                 Specifications</em> it is advised to keep both hashes the
- *                 same.
+ *                 Specifications</em>.
  *
  * \note           This function always uses the maximum possible salt size,
  *                 up to the length of the payload hash. This choice of salt
@@ -1064,7 +1068,7 @@
  * \param md_alg   The message-digest algorithm used to hash the original data.
  *                 Use #MBEDTLS_MD_NONE for signing raw data.
  * \param hashlen  The length of the message digest.
- *                 Ths is only used if \p md_alg is #MBEDTLS_MD_NONE.
+ *                 This is only used if \p md_alg is #MBEDTLS_MD_NONE.
  * \param hash     The buffer holding the message digest or raw data.
  *                 If \p md_alg is #MBEDTLS_MD_NONE, this must be a readable
  *                 buffer of length \p hashlen Bytes. If \p md_alg is not
@@ -1190,16 +1194,15 @@
  * \brief          This function performs a PKCS#1 v2.1 PSS verification
  *                 operation (RSASSA-PSS-VERIFY).
  *
- *                 The hash function for the MGF mask generating function
- *                 is that specified in the RSA context.
- *
- * \note           The \p hash_id in the RSA context is the one used for the
- *                 verification. \p md_alg in the function call is the type of
- *                 hash that is verified. According to <em>RFC-3447: Public-Key
+ * \note           The \c hash_id set in \p ctx (when calling
+ *                 mbedtls_rsa_init() or by calling mbedtls_rsa_set_padding()
+ *                 afterwards) selects the hash used for the
+ *                 encoding operation and for the mask generation function
+ *                 (MGF1). For more details on the encoding operation and the
+ *                 mask generation function, consult <em>RFC-3447: Public-Key
  *                 Cryptography Standards (PKCS) #1 v2.1: RSA Cryptography
- *                 Specifications</em> it is advised to keep both hashes the
- *                 same. If \p hash_id in the RSA context is unset,
- *                 the \p md_alg from the function call is used.
+ *                 Specifications</em>. If the \c hash_id set in \p ctx is
+ *                 #MBEDTLS_MD_NONE, the \p md_alg parameter is used.
  *
  * \deprecated     It is deprecated and discouraged to call this function
  *                 in #MBEDTLS_RSA_PRIVATE mode. Future versions of the library
@@ -1247,13 +1250,12 @@
  * \brief          This function performs a PKCS#1 v2.1 PSS verification
  *                 operation (RSASSA-PSS-VERIFY).
  *
- *                 The hash function for the MGF mask generating function
- *                 is that specified in \p mgf1_hash_id.
- *
  * \note           The \p sig buffer must be as large as the size
  *                 of \p ctx->N. For example, 128 Bytes if RSA-1024 is used.
  *
- * \note           The \p hash_id in the RSA context is ignored.
+ * \note           The \c hash_id set in \p ctx (when calling
+ *                 mbedtls_rsa_init() or by calling mbedtls_rsa_set_padding()
+ *                 afterwards) is ignored.
  *
  * \param ctx      The initialized RSA public key context to use.
  * \param f_rng    The RNG function to use. If \p mode is #MBEDTLS_RSA_PRIVATE,
@@ -1272,7 +1274,13 @@
  *                 buffer of length \p hashlen Bytes. If \p md_alg is not
  *                 #MBEDTLS_MD_NONE, it must be a readable buffer of length
  *                 the size of the hash corresponding to \p md_alg.
- * \param mgf1_hash_id      The message digest used for mask generation.
+ * \param mgf1_hash_id      The message digest algorithm used for the
+ *                          verification operation and the mask generation
+ *                          function (MGF1). For more details on the encoding
+ *                          operation and the mask generation function, consult
+ *                          <em>RFC-3447: Public-Key Cryptography Standards
+ *                          (PKCS) #1 v2.1: RSA Cryptography
+ *                          Specifications</em>.
  * \param expected_salt_len The length of the salt used in padding. Use
  *                          #MBEDTLS_RSA_SALT_LEN_ANY to accept any salt length.
  * \param sig      The buffer holding the signature. This must be a readable
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 4684a60..30dfbce 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -2987,7 +2987,9 @@
 #if defined(MBEDTLS_ECP_C)
 /**
  * \brief          Set the allowed curves in order of preference.
- *                 (Default: all defined curves.)
+ *                 (Default: all defined curves in order of decreasing size,
+ *                 except that Montgomery curves come last. This order
+ *                 is likely to change in a future version.)
  *
  *                 On server: this only affects selection of the ECDHE curve;
  *                 the curves used for ECDH and ECDSA are determined by the
@@ -3019,7 +3021,9 @@
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
 /**
  * \brief          Set the allowed hashes for signatures during the handshake.
- *                 (Default: all available hashes except MD5.)
+ *                 (Default: all SHA-2 hashes, largest first. Also SHA-1 if
+ *                 the compile-time option
+ *                 `MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_KEY_EXCHANGE` is enabled.)
  *
  * \note           This only affects which hashes are offered and can be used
  *                 for signatures during the handshake. Hashes for message
diff --git a/include/mbedtls/x509_crt.h b/include/mbedtls/x509_crt.h
index 8e389f8..64ccb43 100644
--- a/include/mbedtls/x509_crt.h
+++ b/include/mbedtls/x509_crt.h
@@ -263,12 +263,21 @@
 /**
  * Default security profile. Should provide a good balance between security
  * and compatibility with current deployments.
+ *
+ * This profile permits:
+ * - SHA2 hashes.
+ * - All supported elliptic curves.
+ * - RSA with 2048 bits and above.
+ *
+ * New minor versions of Mbed TLS may extend this profile, for example if
+ * new curves are added to the library. New minor versions of Mbed TLS will
+ * not reduce this profile unless serious security concerns require it.
  */
 extern const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_default;
 
 /**
  * Expected next default profile. Recommended for new deployments.
- * Currently targets a 128-bit security level, except for RSA-2048.
+ * Currently targets a 128-bit security level, except for allowing RSA-2048.
  */
 extern const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_next;
 
diff --git a/library/bignum.c b/library/bignum.c
index e00204b..8e4d893 100644
--- a/library/bignum.c
+++ b/library/bignum.c
@@ -181,8 +181,35 @@
     return( 0 );
 }
 
+/* Resize X to have exactly n limbs and set it to 0. */
+static int mbedtls_mpi_resize_clear( mbedtls_mpi *X, size_t limbs )
+{
+    if( limbs == 0 )
+    {
+        mbedtls_mpi_free( X );
+        return( 0 );
+    }
+    else if( X->n == limbs )
+    {
+        memset( X->p, 0, limbs * ciL );
+        X->s = 1;
+        return( 0 );
+    }
+    else
+    {
+        mbedtls_mpi_free( X );
+        return( mbedtls_mpi_grow( X, limbs ) );
+    }
+}
+
 /*
- * Copy the contents of Y into X
+ * Copy the contents of Y into X.
+ *
+ * This function is not constant-time. Leading zeros in Y may be removed.
+ *
+ * Ensure that X does not shrink. This is not guaranteed by the public API,
+ * but some code in the bignum module relies on this property, for example
+ * in mbedtls_mpi_exp_mod().
  */
 int mbedtls_mpi_copy( mbedtls_mpi *X, const mbedtls_mpi *Y )
 {
@@ -196,7 +223,11 @@
 
     if( Y->n == 0 )
     {
-        mbedtls_mpi_free( X );
+        if( X->n != 0 )
+        {
+            X->s = 1;
+            memset( X->p, 0, X->n * ciL );
+        }
         return( 0 );
     }
 
@@ -481,6 +512,12 @@
 
     mbedtls_mpi_init( &T );
 
+    if( s[0] == 0 )
+    {
+        mbedtls_mpi_free( X );
+        return( 0 );
+    }
+
     if( s[0] == '-' )
     {
         ++s;
@@ -838,14 +875,7 @@
     size_t const limbs = CHARS_TO_LIMBS( buflen );
 
     /* Ensure that target MPI has exactly the necessary number of limbs */
-    if( X->n != limbs )
-    {
-        mbedtls_mpi_free( X );
-        mbedtls_mpi_init( X );
-        MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, limbs ) );
-    }
-
-    MBEDTLS_MPI_CHK( mbedtls_mpi_lset( X, 0 ) );
+    MBEDTLS_MPI_CHK( mbedtls_mpi_resize_clear( X, limbs ) );
 
     for( i = 0; i < buflen; i++ )
         X->p[i / ciL] |= ((mbedtls_mpi_uint) buf[i]) << ((i % ciL) << 3);
@@ -874,17 +904,11 @@
     MPI_VALIDATE_RET( buflen == 0 || buf != NULL );
 
     /* Ensure that target MPI has exactly the necessary number of limbs */
-    if( X->n != limbs )
-    {
-        mbedtls_mpi_free( X );
-        mbedtls_mpi_init( X );
-        MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, limbs ) );
-    }
-    MBEDTLS_MPI_CHK( mbedtls_mpi_lset( X, 0 ) );
+    MBEDTLS_MPI_CHK( mbedtls_mpi_resize_clear( X, limbs ) );
 
-    /* Avoid calling `memcpy` with NULL source argument,
+    /* Avoid calling `memcpy` with NULL source or destination argument,
      * even if buflen is 0. */
-    if( buf != NULL )
+    if( buflen != 0 )
     {
         Xp = (unsigned char*) X->p;
         memcpy( Xp + overhead, buf, buflen );
@@ -1617,6 +1641,7 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t i, j;
     mbedtls_mpi TA, TB;
+    int result_is_zero = 0;
     MPI_VALIDATE_RET( X != NULL );
     MPI_VALIDATE_RET( A != NULL );
     MPI_VALIDATE_RET( B != NULL );
@@ -1629,10 +1654,14 @@
     for( i = A->n; i > 0; i-- )
         if( A->p[i - 1] != 0 )
             break;
+    if( i == 0 )
+        result_is_zero = 1;
 
     for( j = B->n; j > 0; j-- )
         if( B->p[j - 1] != 0 )
             break;
+    if( j == 0 )
+        result_is_zero = 1;
 
     MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, i + j ) );
     MBEDTLS_MPI_CHK( mbedtls_mpi_lset( X, 0 ) );
@@ -1640,7 +1669,14 @@
     for( ; j > 0; j-- )
         mpi_mul_hlp( i, A->p, X->p + j - 1, B->p[j - 1] );
 
-    X->s = A->s * B->s;
+    /* If the result is 0, we don't shortcut the operation, which reduces
+     * but does not eliminate side channels leaking the zero-ness. We do
+     * need to take care to set the sign bit properly since the library does
+     * not fully support an MPI object with a value of 0 and s == -1. */
+    if( result_is_zero )
+        X->s = 1;
+    else
+        X->s = A->s * B->s;
 
 cleanup:
 
@@ -2167,6 +2203,11 @@
 #endif
 
     j = N->n + 1;
+    /* All W[i] and X must have at least N->n limbs for the mpi_montmul()
+     * and mpi_montred() calls later. Here we ensure that W[1] and X are
+     * large enough, and later we'll grow other W[i] to the same length.
+     * They must not be shrunk midway through this function!
+     */
     MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, j ) );
     MBEDTLS_MPI_CHK( mbedtls_mpi_grow( &W[1],  j ) );
     MBEDTLS_MPI_CHK( mbedtls_mpi_grow( &T, j * 2 ) );
@@ -2201,10 +2242,18 @@
      * W[1] = A * R^2 * R^-1 mod N = A * R mod N
      */
     if( mbedtls_mpi_cmp_mpi( A, N ) >= 0 )
+    {
         MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &W[1], A, N ) );
+        /* This should be a no-op because W[1] is already that large before
+         * mbedtls_mpi_mod_mpi(), but it's necessary to avoid an overflow
+         * in mpi_montmul() below, so let's make sure. */
+        MBEDTLS_MPI_CHK( mbedtls_mpi_grow( &W[1], N->n + 1 ) );
+    }
     else
         MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &W[1], A ) );
 
+    /* Note that this is safe because W[1] always has at least N->n limbs
+     * (it grew above and was preserved by mbedtls_mpi_copy()). */
     mpi_montmul( &W[1], &RR, N, mm, &T );
 
     /*
@@ -2360,19 +2409,67 @@
     lz = mbedtls_mpi_lsb( &TA );
     lzt = mbedtls_mpi_lsb( &TB );
 
+    /* The loop below gives the correct result when A==0 but not when B==0.
+     * So have a special case for B==0. Leverage the fact that we just
+     * calculated the lsb and lsb(B)==0 iff B is odd or 0 to make the test
+     * slightly more efficient than cmp_int(). */
+    if( lzt == 0 && mbedtls_mpi_get_bit( &TB, 0 ) == 0 )
+    {
+        ret = mbedtls_mpi_copy( G, A );
+        goto cleanup;
+    }
+
     if( lzt < lz )
         lz = lzt;
 
-    MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TA, lz ) );
-    MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TB, lz ) );
-
     TA.s = TB.s = 1;
 
+    /* We mostly follow the procedure described in HAC 14.54, but with some
+     * minor differences:
+     * - Sequences of multiplications or divisions by 2 are grouped into a
+     *   single shift operation.
+     * - The procedure in HAC assumes that 0 < TB <= TA.
+     *     - The condition TB <= TA is not actually necessary for correctness.
+     *       TA and TB have symmetric roles except for the loop termination
+     *       condition, and the shifts at the beginning of the loop body
+     *       remove any significance from the ordering of TA vs TB before
+     *       the shifts.
+     *     - If TA = 0, the loop goes through 0 iterations and the result is
+     *       correctly TB.
+     *     - The case TB = 0 was short-circuited above.
+     *
+     * For the correctness proof below, decompose the original values of
+     * A and B as
+     *   A = sa * 2^a * A' with A'=0 or A' odd, and sa = +-1
+     *   B = sb * 2^b * B' with B'=0 or B' odd, and sb = +-1
+     * Then gcd(A, B) = 2^{min(a,b)} * gcd(A',B'),
+     * and gcd(A',B') is odd or 0.
+     *
+     * At the beginning, we have TA = |A| and TB = |B| so gcd(A,B) = gcd(TA,TB).
+     * The code maintains the following invariant:
+     *     gcd(A,B) = 2^k * gcd(TA,TB) for some k   (I)
+     */
+
+    /* Proof that the loop terminates:
+     * At each iteration, either the right-shift by 1 is made on a nonzero
+     * value and the nonnegative integer bitlen(TA) + bitlen(TB) decreases
+     * by at least 1, or the right-shift by 1 is made on zero and then
+     * TA becomes 0 which ends the loop (TB cannot be 0 if it is right-shifted
+     * since in that case TB is calculated from TB-TA with the condition TB>TA).
+     */
     while( mbedtls_mpi_cmp_int( &TA, 0 ) != 0 )
     {
+        /* Divisions by 2 preserve the invariant (I). */
         MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TA, mbedtls_mpi_lsb( &TA ) ) );
         MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TB, mbedtls_mpi_lsb( &TB ) ) );
 
+        /* Set either TA or TB to |TA-TB|/2. Since TA and TB are both odd,
+         * TA-TB is even so the division by 2 has an integer result.
+         * Invariant (I) is preserved since any odd divisor of both TA and TB
+         * also divides |TA-TB|/2, and any odd divisor of both TA and |TA-TB|/2
+         * also divides TB, and any odd divisior of both TB and |TA-TB|/2 also
+         * divides TA.
+         */
         if( mbedtls_mpi_cmp_mpi( &TA, &TB ) >= 0 )
         {
             MBEDTLS_MPI_CHK( mbedtls_mpi_sub_abs( &TA, &TA, &TB ) );
@@ -2383,8 +2480,18 @@
             MBEDTLS_MPI_CHK( mbedtls_mpi_sub_abs( &TB, &TB, &TA ) );
             MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &TB, 1 ) );
         }
+        /* Note that one of TA or TB is still odd. */
     }
 
+    /* By invariant (I), gcd(A,B) = 2^k * gcd(TA,TB) for some k.
+     * At the loop exit, TA = 0, so gcd(TA,TB) = TB.
+     * - If there was at least one loop iteration, then one of TA or TB is odd,
+     *   and TA = 0, so TB is odd and gcd(TA,TB) = gcd(A',B'). In this case,
+     *   lz = min(a,b) so gcd(A,B) = 2^lz * TB.
+     * - If there was no loop iteration, then A was 0, and gcd(A,B) = B.
+     *   In this case, lz = 0 and B = TB so gcd(A,B) = B = 2^lz * TB as well.
+     */
+
     MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &TB, lz ) );
     MBEDTLS_MPI_CHK( mbedtls_mpi_copy( G, &TB ) );
 
@@ -2395,6 +2502,33 @@
     return( ret );
 }
 
+/* Fill X with n_bytes random bytes.
+ * X must already have room for those bytes.
+ * The ordering of the bytes returned from the RNG is suitable for
+ * deterministic ECDSA (see RFC 6979 §3.3 and mbedtls_mpi_random()).
+ * The size and sign of X are unchanged.
+ * n_bytes must not be 0.
+ */
+static int mpi_fill_random_internal(
+    mbedtls_mpi *X, size_t n_bytes,
+    int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    const size_t limbs = CHARS_TO_LIMBS( n_bytes );
+    const size_t overhead = ( limbs * ciL ) - n_bytes;
+
+    if( X->n < limbs )
+        return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
+
+    memset( X->p, 0, overhead );
+    memset( (unsigned char *) X->p + limbs * ciL, 0, ( X->n - limbs ) * ciL );
+    MBEDTLS_MPI_CHK( f_rng( p_rng, (unsigned char *) X->p + overhead, n_bytes ) );
+    mpi_bigendian_to_host( X->p, limbs );
+
+cleanup:
+    return( ret );
+}
+
 /*
  * Fill X with size bytes of random.
  *
@@ -2408,25 +2542,84 @@
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t const limbs = CHARS_TO_LIMBS( size );
-    size_t const overhead = ( limbs * ciL ) - size;
-    unsigned char *Xp;
 
     MPI_VALIDATE_RET( X     != NULL );
     MPI_VALIDATE_RET( f_rng != NULL );
 
     /* Ensure that target MPI has exactly the necessary number of limbs */
-    if( X->n != limbs )
+    MBEDTLS_MPI_CHK( mbedtls_mpi_resize_clear( X, limbs ) );
+    if( size == 0 )
+        return( 0 );
+
+    ret = mpi_fill_random_internal( X, size, f_rng, p_rng );
+
+cleanup:
+    return( ret );
+}
+
+int mbedtls_mpi_random( mbedtls_mpi *X,
+                        mbedtls_mpi_sint min,
+                        const mbedtls_mpi *N,
+                        int (*f_rng)(void *, unsigned char *, size_t),
+                        void *p_rng )
+{
+    int ret = MBEDTLS_ERR_MPI_BAD_INPUT_DATA;
+    int count;
+    unsigned cmp = 0;
+    size_t n_bits = mbedtls_mpi_bitlen( N );
+    size_t n_bytes = ( n_bits + 7 ) / 8;
+
+    if( min < 0 )
+        return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
+    if( mbedtls_mpi_cmp_int( N, min ) <= 0 )
+        return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
+
+    /*
+     * When min == 0, each try has at worst a probability 1/2 of failing
+     * (the msb has a probability 1/2 of being 0, and then the result will
+     * be < N), so after 30 tries failure probability is a most 2**(-30).
+     *
+     * When N is just below a power of 2, as is the case when generating
+     * a random scalar on most elliptic curves, 1 try is enough with
+     * overwhelming probability. When N is just above a power of 2,
+     * as when generating a random scalar on secp224k1, each try has
+     * a probability of failing that is almost 1/2.
+     *
+     * The probabilities are almost the same if min is nonzero but negligible
+     * compared to N. This is always the case when N is crypto-sized, but
+     * it's convenient to support small N for testing purposes. When N
+     * is small, use a higher repeat count, otherwise the probability of
+     * failure is macroscopic.
+     */
+    count = ( n_bytes > 4 ? 30 : 250 );
+
+    /* Ensure that target MPI has exactly the same number of limbs
+     * as the upper bound, even if the upper bound has leading zeros.
+     * This is necessary for the mbedtls_mpi_lt_mpi_ct() check. */
+    MBEDTLS_MPI_CHK( mbedtls_mpi_resize_clear( X, N->n ) );
+
+    /*
+     * Match the procedure given in RFC 6979 §3.3 (deterministic ECDSA)
+     * when f_rng is a suitably parametrized instance of HMAC_DRBG:
+     * - use the same byte ordering;
+     * - keep the leftmost n_bits bits of the generated octet string;
+     * - try until result is in the desired range.
+     * This also avoids any bias, which is especially important for ECDSA.
+     */
+    do
     {
-        mbedtls_mpi_free( X );
-        mbedtls_mpi_init( X );
-        MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, limbs ) );
+        MBEDTLS_MPI_CHK( mpi_fill_random_internal( X, n_bytes, f_rng, p_rng ) );
+        MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( X, 8 * n_bytes - n_bits ) );
+
+        if( --count == 0 )
+        {
+            ret = MBEDTLS_ERR_MPI_NOT_ACCEPTABLE;
+            goto cleanup;
+        }
+
+        MBEDTLS_MPI_CHK( mbedtls_mpi_lt_mpi_ct( X, N, &cmp ) );
     }
-    MBEDTLS_MPI_CHK( mbedtls_mpi_lset( X, 0 ) );
-
-    Xp = (unsigned char*) X->p;
-    MBEDTLS_MPI_CHK( f_rng( p_rng, Xp + overhead, size ) );
-
-    mpi_bigendian_to_host( X->p, limbs );
+    while( mbedtls_mpi_cmp_int( X, min ) < 0 || cmp != 1 );
 
 cleanup:
     return( ret );
diff --git a/library/debug.c b/library/debug.c
index e91d1ad..e108600 100644
--- a/library/debug.c
+++ b/library/debug.c
@@ -220,8 +220,8 @@
                       const char *text, const mbedtls_mpi *X )
 {
     char str[DEBUG_BUF_SIZE];
-    int j, k, zeros = 1;
-    size_t i, n, idx = 0;
+    size_t bitlen;
+    size_t idx = 0;
 
     if( NULL == ssl              ||
         NULL == ssl->conf        ||
@@ -232,55 +232,43 @@
         return;
     }
 
-    for( n = X->n - 1; n > 0; n-- )
-        if( X->p[n] != 0 )
-            break;
+    bitlen = mbedtls_mpi_bitlen( X );
 
-    for( j = ( sizeof(mbedtls_mpi_uint) << 3 ) - 1; j >= 0; j-- )
-        if( ( ( X->p[n] >> j ) & 1 ) != 0 )
-            break;
-
-    mbedtls_snprintf( str + idx, sizeof( str ) - idx, "value of '%s' (%d bits) is:\n",
-              text, (int) ( ( n * ( sizeof(mbedtls_mpi_uint) << 3 ) ) + j + 1 ) );
-
+    mbedtls_snprintf( str, sizeof( str ), "value of '%s' (%u bits) is:\n",
+                      text, (unsigned) bitlen );
     debug_send_line( ssl, level, file, line, str );
 
-    idx = 0;
-    for( i = n + 1, j = 0; i > 0; i-- )
+    if( bitlen == 0 )
     {
-        if( zeros && X->p[i - 1] == 0 )
-            continue;
-
-        for( k = sizeof( mbedtls_mpi_uint ) - 1; k >= 0; k-- )
+        str[0] = ' '; str[1] = '0'; str[2] = '0';
+        idx = 3;
+    }
+    else
+    {
+        int n;
+        for( n = (int) ( ( bitlen - 1 ) / 8 ); n >= 0; n-- )
         {
-            if( zeros && ( ( X->p[i - 1] >> ( k << 3 ) ) & 0xFF ) == 0 )
-                continue;
-            else
-                zeros = 0;
-
-            if( j % 16 == 0 )
+            size_t limb_offset = n / sizeof( mbedtls_mpi_uint );
+            size_t offset_in_limb = n % sizeof( mbedtls_mpi_uint );
+            unsigned char octet =
+                ( X->p[limb_offset] >> ( offset_in_limb * 8 ) ) & 0xff;
+            mbedtls_snprintf( str + idx, sizeof( str ) - idx, " %02x", octet );
+            idx += 3;
+            /* Wrap lines after 16 octets that each take 3 columns */
+            if( idx >= 3 * 16 )
             {
-                if( j > 0 )
-                {
-                    mbedtls_snprintf( str + idx, sizeof( str ) - idx, "\n" );
-                    debug_send_line( ssl, level, file, line, str );
-                    idx = 0;
-                }
+                mbedtls_snprintf( str + idx, sizeof( str ) - idx, "\n" );
+                debug_send_line( ssl, level, file, line, str );
+                idx = 0;
             }
-
-            idx += mbedtls_snprintf( str + idx, sizeof( str ) - idx, " %02x", (unsigned int)
-                             ( X->p[i - 1] >> ( k << 3 ) ) & 0xFF );
-
-            j++;
         }
-
     }
 
-    if( zeros == 1 )
-        idx += mbedtls_snprintf( str + idx, sizeof( str ) - idx, " 00" );
-
-    mbedtls_snprintf( str + idx, sizeof( str ) - idx, "\n" );
-    debug_send_line( ssl, level, file, line, str );
+    if( idx != 0 )
+    {
+        mbedtls_snprintf( str + idx, sizeof( str ) - idx, "\n" );
+        debug_send_line( ssl, level, file, line, str );
+    }
 }
 #endif /* MBEDTLS_BIGNUM_C */
 
diff --git a/library/dhm.c b/library/dhm.c
index 9758af7..accd5a8 100644
--- a/library/dhm.c
+++ b/library/dhm.c
@@ -100,22 +100,21 @@
  */
 static int dhm_check_range( const mbedtls_mpi *param, const mbedtls_mpi *P )
 {
-    mbedtls_mpi L, U;
+    mbedtls_mpi U;
     int ret = 0;
 
-    mbedtls_mpi_init( &L ); mbedtls_mpi_init( &U );
+    mbedtls_mpi_init( &U );
 
-    MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &L, 2 ) );
     MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &U, P, 2 ) );
 
-    if( mbedtls_mpi_cmp_mpi( param, &L ) < 0 ||
+    if( mbedtls_mpi_cmp_int( param, 2 ) < 0 ||
         mbedtls_mpi_cmp_mpi( param, &U ) > 0 )
     {
         ret = MBEDTLS_ERR_DHM_BAD_INPUT_DATA;
     }
 
 cleanup:
-    mbedtls_mpi_free( &L ); mbedtls_mpi_free( &U );
+    mbedtls_mpi_free( &U );
     return( ret );
 }
 
@@ -151,38 +150,44 @@
 }
 
 /*
- * Setup and write the ServerKeyExchange parameters
+ * Pick a random R in the range [2, M-2] for blinding or key generation.
  */
-int mbedtls_dhm_make_params( mbedtls_dhm_context *ctx, int x_size,
-                     unsigned char *output, size_t *olen,
-                     int (*f_rng)(void *, unsigned char *, size_t),
-                     void *p_rng )
+static int dhm_random_below( mbedtls_mpi *R, const mbedtls_mpi *M,
+                int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
 {
-    int ret, count = 0;
-    size_t n1, n2, n3;
-    unsigned char *p;
-    DHM_VALIDATE_RET( ctx != NULL );
-    DHM_VALIDATE_RET( output != NULL );
-    DHM_VALIDATE_RET( olen != NULL );
-    DHM_VALIDATE_RET( f_rng != NULL );
+    int ret;
+
+    MBEDTLS_MPI_CHK( mbedtls_mpi_random( R, 3, M, f_rng, p_rng ) );
+    MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( R, R, 1 ) );
+
+cleanup:
+    return( ret );
+}
+
+static int dhm_make_common( mbedtls_dhm_context *ctx, int x_size,
+                            int (*f_rng)(void *, unsigned char *, size_t),
+                            void *p_rng )
+{
+    int ret = 0;
 
     if( mbedtls_mpi_cmp_int( &ctx->P, 0 ) == 0 )
         return( MBEDTLS_ERR_DHM_BAD_INPUT_DATA );
+    if( x_size < 0 )
+        return( MBEDTLS_ERR_DHM_BAD_INPUT_DATA );
 
-    /*
-     * Generate X as large as possible ( < P )
-     */
-    do
+    if( (unsigned) x_size < mbedtls_mpi_size( &ctx->P ) )
     {
         MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &ctx->X, x_size, f_rng, p_rng ) );
-
-        while( mbedtls_mpi_cmp_mpi( &ctx->X, &ctx->P ) >= 0 )
-            MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &ctx->X, 1 ) );
-
-        if( count++ > 10 )
-            return( MBEDTLS_ERR_DHM_MAKE_PARAMS_FAILED );
     }
-    while( dhm_check_range( &ctx->X, &ctx->P ) != 0 );
+    else
+    {
+        /* Generate X as large as possible ( <= P - 2 ) */
+        ret = dhm_random_below( &ctx->X, &ctx->P, f_rng, p_rng );
+        if( ret == MBEDTLS_ERR_MPI_NOT_ACCEPTABLE )
+            return( MBEDTLS_ERR_DHM_MAKE_PARAMS_FAILED );
+        if( ret != 0 )
+            return( ret );
+    }
 
     /*
      * Calculate GX = G^X mod P
@@ -193,8 +198,33 @@
     if( ( ret = dhm_check_range( &ctx->GX, &ctx->P ) ) != 0 )
         return( ret );
 
+cleanup:
+    return( ret );
+}
+
+/*
+ * Setup and write the ServerKeyExchange parameters
+ */
+int mbedtls_dhm_make_params( mbedtls_dhm_context *ctx, int x_size,
+                     unsigned char *output, size_t *olen,
+                     int (*f_rng)(void *, unsigned char *, size_t),
+                     void *p_rng )
+{
+    int ret;
+    size_t n1, n2, n3;
+    unsigned char *p;
+    DHM_VALIDATE_RET( ctx != NULL );
+    DHM_VALIDATE_RET( output != NULL );
+    DHM_VALIDATE_RET( olen != NULL );
+    DHM_VALIDATE_RET( f_rng != NULL );
+
+    ret = dhm_make_common( ctx, x_size, f_rng, p_rng );
+    if( ret != 0 )
+        goto cleanup;
+
     /*
-     * export P, G, GX
+     * Export P, G, GX. RFC 5246 §4.4 states that "leading zero octets are
+     * not required". We omit leading zeros for compactness.
      */
 #define DHM_MPI_EXPORT( X, n )                                          \
     do {                                                                \
@@ -220,11 +250,9 @@
     ctx->len = n1;
 
 cleanup:
-
-    if( ret != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_DHM_MAKE_PARAMS_FAILED, ret ) );
-
-    return( 0 );
+    if( ret != 0 && ret > -128 )
+        ret = MBEDTLS_ERROR_ADD( MBEDTLS_ERR_DHM_MAKE_PARAMS_FAILED, ret );
+    return( ret );
 }
 
 /*
@@ -276,7 +304,7 @@
                      int (*f_rng)(void *, unsigned char *, size_t),
                      void *p_rng )
 {
-    int ret, count = 0;
+    int ret;
     DHM_VALIDATE_RET( ctx != NULL );
     DHM_VALIDATE_RET( output != NULL );
     DHM_VALIDATE_RET( f_rng != NULL );
@@ -284,62 +312,17 @@
     if( olen < 1 || olen > ctx->len )
         return( MBEDTLS_ERR_DHM_BAD_INPUT_DATA );
 
-    if( mbedtls_mpi_cmp_int( &ctx->P, 0 ) == 0 )
-        return( MBEDTLS_ERR_DHM_BAD_INPUT_DATA );
-
-    /*
-     * generate X and calculate GX = G^X mod P
-     */
-    do
-    {
-        MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &ctx->X, x_size, f_rng, p_rng ) );
-
-        while( mbedtls_mpi_cmp_mpi( &ctx->X, &ctx->P ) >= 0 )
-            MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &ctx->X, 1 ) );
-
-        if( count++ > 10 )
-            return( MBEDTLS_ERR_DHM_MAKE_PUBLIC_FAILED );
-    }
-    while( dhm_check_range( &ctx->X, &ctx->P ) != 0 );
-
-    MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &ctx->GX, &ctx->G, &ctx->X,
-                          &ctx->P , &ctx->RP ) );
-
-    if( ( ret = dhm_check_range( &ctx->GX, &ctx->P ) ) != 0 )
-        return( ret );
+    ret = dhm_make_common( ctx, x_size, f_rng, p_rng );
+    if( ret == MBEDTLS_ERR_DHM_MAKE_PARAMS_FAILED )
+        return( MBEDTLS_ERR_DHM_MAKE_PUBLIC_FAILED );
+    if( ret != 0 )
+        goto cleanup;
 
     MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &ctx->GX, output, olen ) );
 
 cleanup:
-
-    if( ret != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_DHM_MAKE_PUBLIC_FAILED, ret ) );
-
-    return( 0 );
-}
-
-/*
- * Pick a random R in the range [2, M) for blinding purposes
- */
-static int dhm_random_below( mbedtls_mpi *R, const mbedtls_mpi *M,
-                int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
-{
-    int ret, count;
-
-    count = 0;
-    do
-    {
-        MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( R, mbedtls_mpi_size( M ), f_rng, p_rng ) );
-
-        while( mbedtls_mpi_cmp_mpi( R, M ) >= 0 )
-            MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( R, 1 ) );
-
-        if( count++ > 10 )
-            return( MBEDTLS_ERR_MPI_NOT_ACCEPTABLE );
-    }
-    while( mbedtls_mpi_cmp_int( R, 1 ) <= 0 );
-
-cleanup:
+    if( ret != 0 && ret > -128 )
+        ret = MBEDTLS_ERROR_ADD( MBEDTLS_ERR_DHM_MAKE_PUBLIC_FAILED, ret );
     return( ret );
 }
 
@@ -390,7 +373,7 @@
      * We need to generate blinding values from scratch
      */
 
-    /* Vi = random( 2, P-1 ) */
+    /* Vi = random( 2, P-2 ) */
     MBEDTLS_MPI_CHK( dhm_random_below( &ctx->Vi, &ctx->P, f_rng, p_rng ) );
 
     /* Vf = Vi^-X mod P
@@ -454,8 +437,9 @@
         MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &ctx->K, &ctx->K, &ctx->P ) );
     }
 
+    /* Output the secret without any leading zero byte. This is mandatory
+     * for TLS per RFC 5246 §8.1.2. */
     *olen = mbedtls_mpi_size( &ctx->K );
-
     MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &ctx->K, output, *olen ) );
 
 cleanup:
diff --git a/library/ecp.c b/library/ecp.c
index 6b29415..f748704 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -1701,26 +1701,11 @@
 #else
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_mpi l, ll;
-    int count = 0;
-    size_t p_size = ( grp->pbits + 7 ) / 8;
 
     mbedtls_mpi_init( &l ); mbedtls_mpi_init( &ll );
 
     /* Generate l such that 1 < l < p */
-    do
-    {
-        MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &l, p_size, f_rng, p_rng ) );
-
-        while( mbedtls_mpi_cmp_mpi( &l, &grp->P ) >= 0 )
-            MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &l, 1 ) );
-
-        if( count++ > 10 )
-        {
-            ret = MBEDTLS_ERR_ECP_RANDOM_FAILED;
-            goto cleanup;
-        }
-    }
-    while( mbedtls_mpi_cmp_int( &l, 1 ) <= 0 );
+    MBEDTLS_MPI_CHK( mbedtls_mpi_random( &l, 2, &grp->P, f_rng, p_rng ) );
 
     /* Z = l * Z */
     MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mod( grp, &pt->Z,   &pt->Z,     &l  ) );
@@ -1736,6 +1721,8 @@
 cleanup:
     mbedtls_mpi_free( &l ); mbedtls_mpi_free( &ll );
 
+    if( ret == MBEDTLS_ERR_MPI_NOT_ACCEPTABLE )
+        ret = MBEDTLS_ERR_ECP_RANDOM_FAILED;
     return( ret );
 #endif /* !defined(MBEDTLS_ECP_NO_FALLBACK) || !defined(MBEDTLS_ECP_RANDOMIZE_JAC_ALT) */
 }
@@ -2485,25 +2472,10 @@
 #else
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_mpi l;
-    int count = 0;
-    size_t p_size = ( grp->pbits + 7 ) / 8;
     mbedtls_mpi_init( &l );
 
     /* Generate l such that 1 < l < p */
-    do
-    {
-        MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &l, p_size, f_rng, p_rng ) );
-
-        while( mbedtls_mpi_cmp_mpi( &l, &grp->P ) >= 0 )
-            MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &l, 1 ) );
-
-        if( count++ > 10 )
-        {
-            ret = MBEDTLS_ERR_ECP_RANDOM_FAILED;
-            goto cleanup;
-        }
-    }
-    while( mbedtls_mpi_cmp_int( &l, 1 ) <= 0 );
+    MBEDTLS_MPI_CHK( mbedtls_mpi_random( &l, 2, &grp->P, f_rng, p_rng ) );
 
     MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mod( grp, &P->X, &P->X, &l ) );
     MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mod( grp, &P->Z, &P->Z, &l ) );
@@ -2511,6 +2483,8 @@
 cleanup:
     mbedtls_mpi_free( &l );
 
+    if( ret == MBEDTLS_ERR_MPI_NOT_ACCEPTABLE )
+        ret = MBEDTLS_ERR_ECP_RANDOM_FAILED;
     return( ret );
 #endif /* !defined(MBEDTLS_ECP_NO_FALLBACK) || !defined(MBEDTLS_ECP_RANDOMIZE_MXZ_ALT) */
 }
@@ -3040,6 +3014,56 @@
     return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
 }
 
+#if defined(MBEDTLS_ECP_MONTGOMERY_ENABLED)
+MBEDTLS_STATIC_TESTABLE
+int mbedtls_ecp_gen_privkey_mx( size_t high_bit,
+                                mbedtls_mpi *d,
+                                int (*f_rng)(void *, unsigned char *, size_t),
+                                void *p_rng )
+{
+    int ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
+    size_t n_random_bytes = high_bit / 8 + 1;
+
+    /* [Curve25519] page 5 */
+    /* Generate a (high_bit+1)-bit random number by generating just enough
+     * random bytes, then shifting out extra bits from the top (necessary
+     * when (high_bit+1) is not a multiple of 8). */
+    MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( d, n_random_bytes,
+                                              f_rng, p_rng ) );
+    MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( d, 8 * n_random_bytes - high_bit - 1 ) );
+
+    MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, high_bit, 1 ) );
+
+    /* Make sure the last two bits are unset for Curve448, three bits for
+       Curve25519 */
+    MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, 0, 0 ) );
+    MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, 1, 0 ) );
+    if( high_bit == 254 )
+    {
+        MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, 2, 0 ) );
+    }
+
+cleanup:
+    return( ret );
+}
+#endif /* MBEDTLS_ECP_MONTGOMERY_ENABLED */
+
+#if defined(MBEDTLS_ECP_SHORT_WEIERSTRASS_ENABLED)
+static int mbedtls_ecp_gen_privkey_sw(
+    const mbedtls_mpi *N, mbedtls_mpi *d,
+    int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
+{
+    int ret = mbedtls_mpi_random( d, 1, N, f_rng, p_rng );
+    switch( ret )
+    {
+        case MBEDTLS_ERR_MPI_NOT_ACCEPTABLE:
+            return( MBEDTLS_ERR_ECP_RANDOM_FAILED );
+        default:
+            return( ret );
+    }
+}
+#endif /* MBEDTLS_ECP_SHORT_WEIERSTRASS_ENABLED */
+
 /*
  * Generate a private key
  */
@@ -3048,89 +3072,21 @@
                      int (*f_rng)(void *, unsigned char *, size_t),
                      void *p_rng )
 {
-    int ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
-    size_t n_size;
-
     ECP_VALIDATE_RET( grp   != NULL );
     ECP_VALIDATE_RET( d     != NULL );
     ECP_VALIDATE_RET( f_rng != NULL );
 
-    n_size = ( grp->nbits + 7 ) / 8;
-
 #if defined(MBEDTLS_ECP_MONTGOMERY_ENABLED)
     if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
-    {
-        /* [M225] page 5 */
-        size_t b;
-
-        do {
-            MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( d, n_size, f_rng, p_rng ) );
-        } while( mbedtls_mpi_bitlen( d ) == 0);
-
-        /* Make sure the most significant bit is nbits */
-        b = mbedtls_mpi_bitlen( d ) - 1; /* mbedtls_mpi_bitlen is one-based */
-        if( b > grp->nbits )
-            MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( d, b - grp->nbits ) );
-        else
-            MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, grp->nbits, 1 ) );
-
-        /* Make sure the last two bits are unset for Curve448, three bits for
-           Curve25519 */
-        MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, 0, 0 ) );
-        MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, 1, 0 ) );
-        if( grp->nbits == 254 )
-        {
-            MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, 2, 0 ) );
-        }
-    }
+        return( mbedtls_ecp_gen_privkey_mx( grp->nbits, d, f_rng, p_rng ) );
 #endif /* MBEDTLS_ECP_MONTGOMERY_ENABLED */
 
 #if defined(MBEDTLS_ECP_SHORT_WEIERSTRASS_ENABLED)
     if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
-    {
-        /* SEC1 3.2.1: Generate d such that 1 <= n < N */
-        int count = 0;
-        unsigned cmp = 0;
-
-        /*
-         * Match the procedure given in RFC 6979 (deterministic ECDSA):
-         * - use the same byte ordering;
-         * - keep the leftmost nbits bits of the generated octet string;
-         * - try until result is in the desired range.
-         * This also avoids any biais, which is especially important for ECDSA.
-         */
-        do
-        {
-            MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( d, n_size, f_rng, p_rng ) );
-            MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( d, 8 * n_size - grp->nbits ) );
-
-            /*
-             * Each try has at worst a probability 1/2 of failing (the msb has
-             * a probability 1/2 of being 0, and then the result will be < N),
-             * so after 30 tries failure probability is a most 2**(-30).
-             *
-             * For most curves, 1 try is enough with overwhelming probability,
-             * since N starts with a lot of 1s in binary, but some curves
-             * such as secp224k1 are actually very close to the worst case.
-             */
-            if( ++count > 30 )
-            {
-                ret = MBEDTLS_ERR_ECP_RANDOM_FAILED;
-                goto cleanup;
-            }
-
-            ret = mbedtls_mpi_lt_mpi_ct( d, &grp->N, &cmp );
-            if( ret != 0 )
-            {
-                goto cleanup;
-            }
-        }
-        while( mbedtls_mpi_cmp_int( d, 1 ) < 0 || cmp != 1 );
-    }
+        return( mbedtls_ecp_gen_privkey_sw( &grp->N, d, f_rng, p_rng ) );
 #endif /* MBEDTLS_ECP_SHORT_WEIERSTRASS_ENABLED */
 
-cleanup:
-    return( ret );
+    return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
 }
 
 /*
diff --git a/library/ecp_invasive.h b/library/ecp_invasive.h
index b523967..71c7702 100644
--- a/library/ecp_invasive.h
+++ b/library/ecp_invasive.h
@@ -27,6 +27,7 @@
 #define MBEDTLS_ECP_INVASIVE_H
 
 #include "common.h"
+#include "mbedtls/bignum.h"
 #include "mbedtls/ecp.h"
 
 #if defined(MBEDTLS_TEST_HOOKS) && defined(MBEDTLS_ECP_C)
@@ -46,6 +47,35 @@
 void mbedtls_ecp_fix_negative( mbedtls_mpi *N, signed char c, size_t bits );
 #endif
 
+#if defined(MBEDTLS_ECP_MONTGOMERY_ENABLED)
+/** Generate a private key on a Montgomery curve (Curve25519 or Curve448).
+ *
+ * This function implements key generation for the set of secret keys
+ * specified in [Curve25519] p. 5 and in [Curve448]. The resulting value
+ * has the lower bits masked but is not necessarily canonical.
+ *
+ * \note            - [Curve25519] http://cr.yp.to/ecdh/curve25519-20060209.pdf
+ *                  - [RFC7748] https://tools.ietf.org/html/rfc7748
+ *
+ * \p high_bit      The position of the high-order bit of the key to generate.
+ *                  This is the bit-size of the key minus 1:
+ *                  254 for Curve25519 or 447 for Curve448.
+ * \param d         The randomly generated key. This is a number of size
+ *                  exactly \p n_bits + 1 bits, with the least significant bits
+ *                  masked as specified in [Curve25519] and in [RFC7748] §5.
+ * \param f_rng     The RNG function.
+ * \param p_rng     The RNG context to be passed to \p f_rng.
+ *
+ * \return          \c 0 on success.
+ * \return          \c MBEDTLS_ERR_ECP_xxx or MBEDTLS_ERR_MPI_xxx on failure.
+ */
+int mbedtls_ecp_gen_privkey_mx( size_t n_bits,
+                                mbedtls_mpi *d,
+                                int (*f_rng)(void *, unsigned char *, size_t),
+                                void *p_rng );
+
+#endif /* MBEDTLS_ECP_MONTGOMERY_ENABLED */
+
 #endif /* MBEDTLS_TEST_HOOKS && MBEDTLS_ECP_C */
 
 #endif /* MBEDTLS_ECP_INVASIVE_H */
diff --git a/library/net_sockets.c b/library/net_sockets.c
index 8f79b74..5fbe1f7 100644
--- a/library/net_sockets.c
+++ b/library/net_sockets.c
@@ -136,6 +136,31 @@
 }
 
 /*
+ * Return 0 if the file descriptor is valid, an error otherwise.
+ * If for_select != 0, check whether the file descriptor is within the range
+ * allowed for fd_set used for the FD_xxx macros and the select() function.
+ */
+static int check_fd( int fd, int for_select )
+{
+    if( fd < 0 )
+        return( MBEDTLS_ERR_NET_INVALID_CONTEXT );
+
+#if (defined(_WIN32) || defined(_WIN32_WCE)) && !defined(EFIX64) && \
+    !defined(EFI32)
+    (void) for_select;
+#else
+    /* A limitation of select() is that it only works with file descriptors
+     * that are strictly less than FD_SETSIZE. This is a limitation of the
+     * fd_set type. Error out early, because attempting to call FD_SET on a
+     * large file descriptor is a buffer overflow on typical platforms. */
+    if( for_select && fd >= FD_SETSIZE )
+        return( MBEDTLS_ERR_NET_POLL_FAILED );
+#endif
+
+    return( 0 );
+}
+
+/*
  * Initialize a context
  */
 void mbedtls_net_init( mbedtls_net_context *ctx )
@@ -466,15 +491,9 @@
 
     int fd = ctx->fd;
 
-    if( fd < 0 )
-        return( MBEDTLS_ERR_NET_INVALID_CONTEXT );
-
-    /* A limitation of select() is that it only works with file descriptors
-     * that are strictly less than FD_SETSIZE. This is a limitation of the
-     * fd_set type. Error out early, because attempting to call FD_SET on a
-     * large file descriptor is a buffer overflow on typical platforms. */
-    if( fd >= FD_SETSIZE )
-        return( MBEDTLS_ERR_NET_POLL_FAILED );
+    ret = check_fd( fd, 1 );
+    if( ret != 0 )
+        return( ret );
 
 #if defined(__has_feature)
 #if __has_feature(memory_sanitizer)
@@ -553,8 +572,9 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     int fd = ((mbedtls_net_context *) ctx)->fd;
 
-    if( fd < 0 )
-        return( MBEDTLS_ERR_NET_INVALID_CONTEXT );
+    ret = check_fd( fd, 0 );
+    if( ret != 0 )
+        return( ret );
 
     ret = (int) read( fd, buf, len );
 
@@ -592,15 +612,9 @@
     fd_set read_fds;
     int fd = ((mbedtls_net_context *) ctx)->fd;
 
-    if( fd < 0 )
-        return( MBEDTLS_ERR_NET_INVALID_CONTEXT );
-
-    /* A limitation of select() is that it only works with file descriptors
-     * that are strictly less than FD_SETSIZE. This is a limitation of the
-     * fd_set type. Error out early, because attempting to call FD_SET on a
-     * large file descriptor is a buffer overflow on typical platforms. */
-    if( fd >= FD_SETSIZE )
-        return( MBEDTLS_ERR_NET_POLL_FAILED );
+    ret = check_fd( fd, 1 );
+    if( ret != 0 )
+        return( ret );
 
     FD_ZERO( &read_fds );
     FD_SET( fd, &read_fds );
@@ -640,8 +654,9 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     int fd = ((mbedtls_net_context *) ctx)->fd;
 
-    if( fd < 0 )
-        return( MBEDTLS_ERR_NET_INVALID_CONTEXT );
+    ret = check_fd( fd, 0 );
+    if( ret != 0 )
+        return( ret );
 
     ret = (int) write( fd, buf, len );
 
diff --git a/library/nist_kw.c b/library/nist_kw.c
index 04829a0..5054ca2 100644
--- a/library/nist_kw.c
+++ b/library/nist_kw.c
@@ -189,8 +189,6 @@
     uint64_t t = 0;
     unsigned char outbuff[KW_SEMIBLOCK_LENGTH * 2];
     unsigned char inbuff[KW_SEMIBLOCK_LENGTH * 2];
-    unsigned char *R2 = output + KW_SEMIBLOCK_LENGTH;
-    unsigned char *A = output;
 
     *out_len = 0;
     /*
@@ -266,6 +264,9 @@
     }
     else
     {
+        unsigned char *R2 = output + KW_SEMIBLOCK_LENGTH;
+        unsigned char *A = output;
+
         /*
          * Do the wrapping function W, as defined in RFC 3394 section 2.2.1
          */
@@ -329,7 +330,7 @@
     uint64_t t = 0;
     unsigned char outbuff[KW_SEMIBLOCK_LENGTH * 2];
     unsigned char inbuff[KW_SEMIBLOCK_LENGTH * 2];
-    unsigned char *R = output + ( semiblocks - 2 ) * KW_SEMIBLOCK_LENGTH;
+    unsigned char *R = NULL;
     *out_len = 0;
 
     if( semiblocks < MIN_SEMIBLOCKS_COUNT )
@@ -339,6 +340,7 @@
 
     memcpy( A, input, KW_SEMIBLOCK_LENGTH );
     memmove( output, input + KW_SEMIBLOCK_LENGTH, ( semiblocks - 1 ) * KW_SEMIBLOCK_LENGTH );
+    R = output + ( semiblocks - 2 ) * KW_SEMIBLOCK_LENGTH;
 
     /* Calculate intermediate values */
     for( t = s; t >= 1; t-- )
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 33b4433..016c24a 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -2309,6 +2309,46 @@
     return( status );
 }
 
+static psa_status_t psa_mac_finalize_alg_and_key_validation(
+    psa_algorithm_t alg,
+    const psa_key_attributes_t *attributes,
+    uint8_t *mac_size )
+{
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    psa_key_type_t key_type = psa_get_key_type( attributes );
+    size_t key_bits = psa_get_key_bits( attributes );
+
+    if( ! PSA_ALG_IS_MAC( alg ) )
+        return( PSA_ERROR_INVALID_ARGUMENT );
+
+    /* Validate the combination of key type and algorithm */
+    status = psa_mac_key_can_do( alg, key_type );
+    if( status != PSA_SUCCESS )
+        return( status );
+
+    /* Get the output length for the algorithm and key combination */
+    *mac_size = PSA_MAC_LENGTH( key_type, key_bits, alg );
+
+    if( *mac_size < 4 )
+    {
+        /* A very short MAC is too short for security since it can be
+         * brute-forced. Ancient protocols with 32-bit MACs do exist,
+         * so we make this our minimum, even though 32 bits is still
+         * too small for security. */
+        return( PSA_ERROR_NOT_SUPPORTED );
+    }
+
+    if( *mac_size > PSA_MAC_LENGTH( key_type, key_bits,
+                                    PSA_ALG_FULL_LENGTH_MAC( alg ) ) )
+    {
+        /* It's impossible to "truncate" to a larger length than the full length
+         * of the algorithm. */
+        return( PSA_ERROR_INVALID_ARGUMENT );
+    }
+
+    return( PSA_SUCCESS );
+}
+
 static psa_status_t psa_mac_setup( psa_mac_operation_t *operation,
                                    mbedtls_svc_key_id_t key,
                                    psa_algorithm_t alg,
@@ -2322,9 +2362,6 @@
     if( operation->id != 0 )
         return( PSA_ERROR_BAD_STATE );
 
-    if( ! PSA_ALG_IS_MAC( alg ) )
-        return( PSA_ERROR_INVALID_ARGUMENT );
-
     status = psa_get_and_lock_key_slot_with_policy(
                  key,
                  &slot,
@@ -2337,39 +2374,12 @@
         .core = slot->attr
     };
 
-    /* Validate the combination of key type and algorithm */
-    status = psa_mac_key_can_do( alg, psa_get_key_type( &attributes ) );
+    status = psa_mac_finalize_alg_and_key_validation( alg, &attributes,
+                                                      &operation->mac_size );
     if( status != PSA_SUCCESS )
         goto exit;
 
     operation->is_sign = is_sign;
-
-    /* Get the output length for the algorithm and key combination */
-    operation->mac_size = PSA_MAC_LENGTH(
-                            psa_get_key_type( &attributes ),
-                            psa_get_key_bits( &attributes ),
-                            alg );
-
-    if( operation->mac_size < 4 )
-    {
-        /* A very short MAC is too short for security since it can be
-         * brute-forced. Ancient protocols with 32-bit MACs do exist,
-         * so we make this our minimum, even though 32 bits is still
-         * too small for security. */
-        status = PSA_ERROR_NOT_SUPPORTED;
-        goto exit;
-    }
-
-    if( operation->mac_size > PSA_MAC_LENGTH( psa_get_key_type( &attributes ),
-                                              psa_get_key_bits( &attributes ),
-                                              PSA_ALG_FULL_LENGTH_MAC( alg ) ) )
-    {
-        /* It's impossible to "truncate" to a larger length than the full length
-         * of the algorithm. */
-        status = PSA_ERROR_INVALID_ARGUMENT;
-        goto exit;
-    }
-
     /* Dispatch the MAC setup call with validated input */
     if( is_sign )
     {
@@ -2462,24 +2472,22 @@
                                                  mac, operation->mac_size,
                                                  mac_length );
 
-    if( status == PSA_SUCCESS )
+    /* In case of success, set the potential excess room in the output buffer
+     * to an invalid value, to avoid potentially leaking a longer MAC.
+     * In case of error, set the output length and content to a safe default,
+     * such that in case the caller misses an error check, the output would be
+     * an unachievable MAC.
+     */
+    if( status != PSA_SUCCESS )
     {
-        /* Set the excess room in the output buffer to an invalid value, to
-         * avoid potentially leaking a longer MAC. */
-        if( mac_size > operation->mac_size )
-            memset( &mac[operation->mac_size],
-                    '!',
-                    mac_size - operation->mac_size );
-    }
-    else
-    {
-        /* Set the output length and content to a safe default, such that in
-         * case the caller misses an error check, the output would be an
-         * unachievable MAC. */
         *mac_length = mac_size;
-        memset( mac, '!', mac_size );
+        operation->mac_size = 0;
     }
 
+    if( mac_size > operation->mac_size )
+        memset( &mac[operation->mac_size], '!',
+                mac_size - operation->mac_size );
+
     abort_status = psa_mac_abort( operation );
 
     return( status == PSA_SUCCESS ? abort_status : status );
@@ -2513,7 +2521,116 @@
     return( status == PSA_SUCCESS ? abort_status : status );
 }
 
+static psa_status_t psa_mac_compute_internal( mbedtls_svc_key_id_t key,
+                                              psa_algorithm_t alg,
+                                              const uint8_t *input,
+                                              size_t input_length,
+                                              uint8_t *mac,
+                                              size_t mac_size,
+                                              size_t *mac_length,
+                                              int is_sign )
+{
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
+    psa_key_slot_t *slot;
+    uint8_t operation_mac_size = 0;
 
+    status = psa_get_and_lock_key_slot_with_policy(
+                 key, &slot,
+                 is_sign ? PSA_KEY_USAGE_SIGN_HASH : PSA_KEY_USAGE_VERIFY_HASH,
+                 alg );
+    if( status != PSA_SUCCESS )
+        goto exit;
+
+    psa_key_attributes_t attributes = {
+        .core = slot->attr
+    };
+
+    status = psa_mac_finalize_alg_and_key_validation( alg, &attributes,
+                                                      &operation_mac_size );
+    if( status != PSA_SUCCESS )
+        goto exit;
+
+    if( mac_size < operation_mac_size )
+    {
+        status = PSA_ERROR_BUFFER_TOO_SMALL;
+        goto exit;
+    }
+
+    status = psa_driver_wrapper_mac_compute(
+                 &attributes,
+                 slot->key.data, slot->key.bytes,
+                 alg,
+                 input, input_length,
+                 mac, operation_mac_size, mac_length );
+
+exit:
+    /* In case of success, set the potential excess room in the output buffer
+     * to an invalid value, to avoid potentially leaking a longer MAC.
+     * In case of error, set the output length and content to a safe default,
+     * such that in case the caller misses an error check, the output would be
+     * an unachievable MAC.
+     */
+    if( status != PSA_SUCCESS )
+    {
+        *mac_length = mac_size;
+        operation_mac_size = 0;
+    }
+    if( mac_size > operation_mac_size )
+        memset( &mac[operation_mac_size], '!', mac_size - operation_mac_size );
+
+    unlock_status = psa_unlock_key_slot( slot );
+
+    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+}
+
+psa_status_t psa_mac_compute( mbedtls_svc_key_id_t key,
+                              psa_algorithm_t alg,
+                              const uint8_t *input,
+                              size_t input_length,
+                              uint8_t *mac,
+                              size_t mac_size,
+                              size_t *mac_length)
+{
+    return( psa_mac_compute_internal( key, alg,
+                                      input, input_length,
+                                      mac, mac_size, mac_length, 1 ) );
+}
+
+psa_status_t psa_mac_verify( mbedtls_svc_key_id_t key,
+                             psa_algorithm_t alg,
+                             const uint8_t *input,
+                             size_t input_length,
+                             const uint8_t *mac,
+                             size_t mac_length)
+{
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    uint8_t actual_mac[PSA_MAC_MAX_SIZE];
+    size_t actual_mac_length;
+
+    status = psa_mac_compute_internal( key, alg,
+                                       input, input_length,
+                                       actual_mac, sizeof( actual_mac ),
+                                       &actual_mac_length, 0 );
+    if( status != PSA_SUCCESS )
+        goto exit;
+
+    if( mac_length != actual_mac_length )
+    {
+        status = PSA_ERROR_INVALID_SIGNATURE;
+        goto exit;
+    }
+    if( mbedtls_psa_safer_memcmp( mac, actual_mac, actual_mac_length ) != 0 )
+    {
+        status = PSA_ERROR_INVALID_SIGNATURE;
+        goto exit;
+    }
+
+exit:
+    mbedtls_platform_zeroize( actual_mac, sizeof( actual_mac ) );
+
+    return ( status );
+}
 
 /****************************************************************/
 /* Asymmetric cryptography */
@@ -3794,6 +3911,17 @@
     psa_status_t status;
     uint8_t offset, length;
 
+    switch( tls12_prf->state )
+    {
+        case PSA_TLS12_PRF_STATE_LABEL_SET:
+            tls12_prf->state = PSA_TLS12_PRF_STATE_OUTPUT;
+            break;
+        case PSA_TLS12_PRF_STATE_OUTPUT:
+            break;
+        default:
+            return( PSA_ERROR_BAD_STATE );
+    }
+
     while( output_length != 0 )
     {
         /* Check if we have fully processed the current block. */
diff --git a/library/psa_crypto_mac.c b/library/psa_crypto_mac.c
index 20c56a0..135fa35 100644
--- a/library/psa_crypto_mac.c
+++ b/library/psa_crypto_mac.c
@@ -359,30 +359,6 @@
     return( status );
 }
 
-static psa_status_t mac_compute(
-    const psa_key_attributes_t *attributes,
-    const uint8_t *key_buffer,
-    size_t key_buffer_size,
-    psa_algorithm_t alg,
-    const uint8_t *input,
-    size_t input_length,
-    uint8_t *mac,
-    size_t mac_size,
-    size_t *mac_length )
-{
-    /* One-shot MAC has not been implemented in this PSA implementation yet. */
-    (void) attributes;
-    (void) key_buffer;
-    (void) key_buffer_size;
-    (void) alg;
-    (void) input;
-    (void) input_length;
-    (void) mac;
-    (void) mac_size;
-    (void) mac_length;
-    return( PSA_ERROR_NOT_SUPPORTED );
-}
-
 static psa_status_t mac_update(
     mbedtls_psa_mac_operation_t *operation,
     const uint8_t *input,
@@ -497,6 +473,44 @@
 
     return( status );
 }
+
+static psa_status_t mac_compute(
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer,
+    size_t key_buffer_size,
+    psa_algorithm_t alg,
+    const uint8_t *input,
+    size_t input_length,
+    uint8_t *mac,
+    size_t mac_size,
+    size_t *mac_length )
+{
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    mbedtls_psa_mac_operation_t operation = MBEDTLS_PSA_MAC_OPERATION_INIT;
+
+    status = mac_setup( &operation,
+                        attributes, key_buffer, key_buffer_size,
+                        alg );
+    if( status != PSA_SUCCESS )
+        goto exit;
+
+    if( input_length > 0 )
+    {
+        status = mac_update( &operation, input, input_length );
+        if( status != PSA_SUCCESS )
+            goto exit;
+    }
+
+    status = mac_finish_internal( &operation, mac, mac_size );
+    if( status == PSA_SUCCESS )
+        *mac_length = mac_size;
+
+exit:
+    mac_abort( &operation );
+
+    return( status );
+}
+
 #endif /* BUILTIN_ALG_HMAC || BUILTIN_ALG_CMAC */
 
 #if defined(MBEDTLS_PSA_BUILTIN_MAC)
diff --git a/library/psa_crypto_rsa.c b/library/psa_crypto_rsa.c
index 08db7a4..80b9985 100644
--- a/library/psa_crypto_rsa.c
+++ b/library/psa_crypto_rsa.c
@@ -360,27 +360,14 @@
         return( PSA_ERROR_INVALID_ARGUMENT );
 #endif
 
-#if defined(BUILTIN_ALG_RSA_PKCS1V15_SIGN)
-    /* For PKCS#1 v1.5 signature, if using a hash, the hash length
-     * must be correct. */
-    if( PSA_ALG_IS_RSA_PKCS1V15_SIGN( alg ) &&
-        alg != PSA_ALG_RSA_PKCS1V15_SIGN_RAW )
+    /* For signatures using a hash, the hash length must be correct. */
+    if( alg != PSA_ALG_RSA_PKCS1V15_SIGN_RAW )
     {
         if( md_info == NULL )
             return( PSA_ERROR_NOT_SUPPORTED );
         if( mbedtls_md_get_size( md_info ) != hash_length )
             return( PSA_ERROR_INVALID_ARGUMENT );
     }
-#endif /* BUILTIN_ALG_RSA_PKCS1V15_SIGN */
-
-#if defined(BUILTIN_ALG_RSA_PSS)
-    /* PSS requires a hash internally. */
-    if( PSA_ALG_IS_RSA_PSS( alg ) )
-    {
-        if( md_info == NULL )
-            return( PSA_ERROR_NOT_SUPPORTED );
-    }
-#endif /* BUILTIN_ALG_RSA_PSS */
 
     return( PSA_SUCCESS );
 }
@@ -512,7 +499,7 @@
                                              mbedtls_psa_get_random,
                                              MBEDTLS_PSA_RANDOM_STATE,
                                              MBEDTLS_RSA_PUBLIC,
-                                             MBEDTLS_MD_NONE,
+                                             md_alg,
                                              (unsigned int) hash_length,
                                              hash,
                                              signature );
diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index 54a7be0..1352b49 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -1241,6 +1241,9 @@
             MD_CHK( mbedtls_md_update( ctx, data + offset, 1 ) );
     }
 
+    /* The context needs to finish() before it starts() again */
+    MD_CHK( mbedtls_md_finish( ctx, aux_out ) );
+
     /* Now compute HASH(okey + inner_hash) */
     MD_CHK( mbedtls_md_starts( ctx ) );
     MD_CHK( mbedtls_md_update( ctx, okey, block_size ) );
diff --git a/library/x509_crt.c b/library/x509_crt.c
index 8086cc0..acdd545 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -91,9 +91,8 @@
  */
 #define X509_MAX_VERIFY_CHAIN_SIZE    ( MBEDTLS_X509_MAX_INTERMEDIATE_CA + 2 )
 
-/*
- * Default profile
- */
+/* Default profile. Do not remove items unless there are serious security
+ * concerns. */
 const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_default =
 {
 #if defined(MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES)
diff --git a/tests/include/test/helpers.h b/tests/include/test/helpers.h
index 9bfe085..dfc09cd 100644
--- a/tests/include/test/helpers.h
+++ b/tests/include/test/helpers.h
@@ -54,6 +54,10 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#if defined(MBEDTLS_BIGNUM_C)
+#include "mbedtls/bignum.h"
+#endif
+
 typedef enum
 {
     MBEDTLS_TEST_RESULT_SUCCESS = 0,
@@ -294,4 +298,25 @@
                                  const char *file, int line);
 #endif
 
+#if defined(MBEDTLS_BIGNUM_C)
+/** Read an MPI from a string.
+ *
+ * Like mbedtls_mpi_read_string(), but size the resulting bignum based
+ * on the number of digits in the string. In particular, construct a
+ * bignum with 0 limbs for an empty string, and a bignum with leading 0
+ * limbs if the string has sufficiently many leading 0 digits.
+ *
+ * This is important so that the "0 (null)" and "0 (1 limb)" and
+ * "leading zeros" test cases do what they claim.
+ *
+ * \param[out] X        The MPI object to populate. It must be initialized.
+ * \param radix         The radix (2 to 16).
+ * \param[in] s         The null-terminated string to read from.
+ *
+ * \return \c 0 on success, an \c MBEDTLS_ERR_MPI_xxx error code otherwise.
+ */
+/* Since the library has exactly the desired behavior, this is trivial. */
+int mbedtls_test_read_mpi( mbedtls_mpi *X, int radix, const char *s );
+#endif /* MBEDTLS_BIGNUM_C */
+
 #endif /* TEST_HELPERS_H */
diff --git a/tests/include/test/macros.h b/tests/include/test/macros.h
index 450bc2c..b7b6e8f 100644
--- a/tests/include/test/macros.h
+++ b/tests/include/test/macros.h
@@ -282,38 +282,6 @@
 #define TEST_VALID_PARAM( TEST )                                    \
     TEST_ASSERT( ( TEST, 1 ) );
 
-/** Allocate memory dynamically and fail the test case if this fails.
- *
- * You must set \p pointer to \c NULL before calling this macro and
- * put `mbedtls_free( pointer )` in the test's cleanup code.
- *
- * If \p length is zero, the resulting \p pointer will be \c NULL.
- * This is usually what we want in tests since API functions are
- * supposed to accept null pointers when a buffer size is zero.
- *
- * This macro expands to an instruction, not an expression.
- * It may jump to the \c exit label.
- *
- * \param pointer   An lvalue where the address of the allocated buffer
- *                  will be stored.
- *                  This expression may be evaluated multiple times.
- * \param length    Number of elements to allocate.
- *                  This expression may be evaluated multiple times.
- *
- */
-#define ASSERT_ALLOC( pointer, length )                           \
-    do                                                            \
-    {                                                             \
-        TEST_ASSERT( ( pointer ) == NULL );                       \
-        if( ( length ) != 0 )                                     \
-        {                                                         \
-            ( pointer ) = mbedtls_calloc( sizeof( *( pointer ) ), \
-                                          ( length ) );           \
-            TEST_ASSERT( ( pointer ) != NULL );                   \
-        }                                                         \
-    }                                                             \
-    while( 0 )
-
 #define TEST_HELPER_ASSERT(a) if( !( a ) )                          \
 {                                                                   \
     mbedtls_fprintf( stderr, "Assertion Failed at %s:%d - %s\n",    \
diff --git a/tests/include/test/random.h b/tests/include/test/random.h
index 5e7e4e6..6428280 100644
--- a/tests/include/test/random.h
+++ b/tests/include/test/random.h
@@ -36,8 +36,11 @@
 
 typedef struct
 {
-    unsigned char *buf;
+    unsigned char *buf; /* Pointer to a buffer of length bytes. */
     size_t length;
+    /* If fallback_f_rng is NULL, fail after delivering length bytes. */
+    int ( *fallback_f_rng )( void*, unsigned char *, size_t );
+    void *fallback_p_rng;
 } mbedtls_test_rnd_buf_info;
 
 /**
@@ -67,24 +70,25 @@
                                size_t len );
 
 /**
- * This function only returns zeros
+ * This function only returns zeros.
  *
- * rng_state shall be NULL.
+ * \p rng_state shall be \c NULL.
  */
 int mbedtls_test_rnd_zero_rand( void *rng_state,
                                 unsigned char *output,
                                 size_t len );
 
 /**
- * This function returns random based on a buffer it receives.
+ * This function returns random data based on a buffer it receives.
  *
- * rng_state shall be a pointer to a rnd_buf_info structure.
+ * \p rng_state shall be a pointer to a #mbedtls_test_rnd_buf_info structure.
  *
  * The number of bytes released from the buffer on each call to
- * the random function is specified by per_call. (Can be between
- * 1 and 4)
+ * the random function is specified by \p len.
  *
- * After the buffer is empty it will return rand();
+ * After the buffer is empty, this function will call the fallback RNG in the
+ * #mbedtls_test_rnd_buf_info structure if there is one, and
+ * will return #MBEDTLS_ERR_ENTROPY_SOURCE_FAILED otherwise.
  */
 int mbedtls_test_rnd_buffer_rand( void *rng_state,
                                   unsigned char *output,
@@ -96,7 +100,7 @@
  * Pseudo random is based on the XTEA encryption algorithm to
  * generate pseudorandom.
  *
- * rng_state shall be a pointer to a rnd_pseudo_info structure.
+ * \p rng_state shall be a pointer to a #mbedtls_test_rnd_pseudo_info structure.
  */
 int mbedtls_test_rnd_pseudo_rand( void *rng_state,
                                   unsigned char *output,
diff --git a/tests/src/helpers.c b/tests/src/helpers.c
index b7c9867..bf6c1d9 100644
--- a/tests/src/helpers.c
+++ b/tests/src/helpers.c
@@ -338,3 +338,18 @@
     }
 }
 #endif /* MBEDTLS_TEST_HOOKS */
+
+#if defined(MBEDTLS_BIGNUM_C)
+int mbedtls_test_read_mpi( mbedtls_mpi *X, int radix, const char *s )
+{
+    /* mbedtls_mpi_read_string() currently retains leading zeros.
+     * It always allocates at least one limb for the value 0. */
+    if( s[0] == 0 )
+    {
+        mbedtls_mpi_free( X );
+        return( 0 );
+    }
+    else
+        return( mbedtls_mpi_read_string( X, radix, s ) );
+}
+#endif
diff --git a/tests/src/psa_exercise_key.c b/tests/src/psa_exercise_key.c
index f48a64e..e4e55c9 100644
--- a/tests/src/psa_exercise_key.c
+++ b/tests/src/psa_exercise_key.c
@@ -316,13 +316,14 @@
     #endif
         }
 
+        /* Some algorithms require the payload to have the size of
+         * the hash encoded in the algorithm. Use this input size
+         * even for algorithms that allow other input sizes. */
+        if( hash_alg != 0 )
+            payload_length = PSA_HASH_LENGTH( hash_alg );
+
         if( usage & PSA_KEY_USAGE_SIGN_HASH )
         {
-            /* Some algorithms require the payload to have the size of
-             * the hash encoded in the algorithm. Use this input size
-             * even for algorithms that allow other input sizes. */
-            if( hash_alg != 0 )
-                payload_length = PSA_HASH_LENGTH( hash_alg );
             PSA_ASSERT( psa_sign_hash( key, alg,
                                        payload, payload_length,
                                        signature, sizeof( signature ),
diff --git a/tests/src/random.c b/tests/src/random.c
index e01bd4d..7f3f401 100644
--- a/tests/src/random.c
+++ b/tests/src/random.c
@@ -35,6 +35,8 @@
 #include <test/random.h>
 #include <string.h>
 
+#include <mbedtls/entropy.h>
+
 int mbedtls_test_rnd_std_rand( void *rng_state,
                                unsigned char *output,
                                size_t len )
@@ -91,8 +93,16 @@
     }
 
     if( len - use_len > 0 )
-        return( mbedtls_test_rnd_std_rand( NULL, output + use_len,
-                                           len - use_len ) );
+    {
+        if( info->fallback_f_rng != NULL )
+        {
+            return( info->fallback_f_rng( info->fallback_p_rng,
+                                          output + use_len,
+                                          len - use_len ) );
+        }
+        else
+            return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
+    }
 
     return( 0 );
 }
diff --git a/tests/suites/test_suite_aes.function b/tests/suites/test_suite_aes.function
index 754a167..a90277d 100644
--- a/tests/suites/test_suite_aes.function
+++ b/tests/suites/test_suite_aes.function
@@ -210,6 +210,8 @@
     /* Valid pointers are passed for builds with MBEDTLS_CHECK_PARAMS, as
      * otherwise we wouldn't get to the size check we're interested in. */
     TEST_ASSERT( mbedtls_aes_crypt_xts( &ctx, MBEDTLS_AES_ENCRYPT, length, data_unit, src, output ) == retval );
+exit:
+    mbedtls_aes_xts_free( &ctx );
 }
 /* END_CASE */
 
diff --git a/tests/suites/test_suite_asn1parse.function b/tests/suites/test_suite_asn1parse.function
index 47a4340..414278f 100644
--- a/tests/suites/test_suite_asn1parse.function
+++ b/tests/suites/test_suite_asn1parse.function
@@ -417,7 +417,7 @@
     }
 
 #if defined(MBEDTLS_BIGNUM_C)
-    ret = mbedtls_mpi_read_string( &expected_mpi, 16, expected_hex );
+    ret = mbedtls_test_read_mpi( &expected_mpi, 16, expected_hex );
     TEST_ASSERT( ret == 0 || ret == MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
     if( ret == MBEDTLS_ERR_MPI_BAD_INPUT_DATA )
     {
diff --git a/tests/suites/test_suite_debug.data b/tests/suites/test_suite_debug.data
index eb99b79..6d57442 100644
--- a/tests/suites/test_suite_debug.data
+++ b/tests/suites/test_suite_debug.data
@@ -37,6 +37,27 @@
 Debug print buffer #5
 mbedtls_debug_print_buf:"MyFile":999:"Test return value":"000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F30":"MyFile(0999)\: dumping 'Test return value' (49 bytes)\nMyFile(0999)\: 0000\:  00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f  ................\nMyFile(0999)\: 0010\:  10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f  ................\nMyFile(0999)\: 0020\:  20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f   !"#$%&'()*+,-./\nMyFile(0999)\: 0030\:  30                                               0\n"
 
+Debug print mbedtls_mpi: 0 (empty representation)
+mbedtls_debug_print_mpi:16:"":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (0 bits) is\:\nMyFile(0999)\:  00\n"
+
+Debug print mbedtls_mpi: 0 (non-empty representation)
+mbedtls_debug_print_mpi:16:"00000000000000":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (0 bits) is\:\nMyFile(0999)\:  00\n"
+
+Debug print mbedtls_mpi #2: 3 bits
+mbedtls_debug_print_mpi:16:"00000000000007":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (3 bits) is\:\nMyFile(0999)\:  07\n"
+
+Debug print mbedtls_mpi: 49 bits
+mbedtls_debug_print_mpi:16:"01020304050607":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (49 bits) is\:\nMyFile(0999)\:  01 02 03 04 05 06 07\n"
+
+Debug print mbedtls_mpi: 759 bits
+mbedtls_debug_print_mpi:16:"0000000000000000000000000000000000000000000000000000000041379d00fed1491fe15df284dfde4a142f68aa8d412023195cee66883e6290ffe703f4ea5963bf212713cee46b107c09182b5edcd955adac418bf4918e2889af48e1099d513830cec85c26ac1e158b52620e33ba8692f893efbb2f958b4424":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (759 bits) is\:\nMyFile(0999)\:  41 37 9d 00 fe d1 49 1f e1 5d f2 84 df de 4a 14\nMyFile(0999)\:  2f 68 aa 8d 41 20 23 19 5c ee 66 88 3e 62 90 ff\nMyFile(0999)\:  e7 03 f4 ea 59 63 bf 21 27 13 ce e4 6b 10 7c 09\nMyFile(0999)\:  18 2b 5e dc d9 55 ad ac 41 8b f4 91 8e 28 89 af\nMyFile(0999)\:  48 e1 09 9d 51 38 30 ce c8 5c 26 ac 1e 15 8b 52\nMyFile(0999)\:  62 0e 33 ba 86 92 f8 93 ef bb 2f 95 8b 44 24\n"
+
+Debug print mbedtls_mpi: 764 bits #1
+mbedtls_debug_print_mpi:16:"0941379d00fed1491fe15df284dfde4a142f68aa8d412023195cee66883e6290ffe703f4ea5963bf212713cee46b107c09182b5edcd955adac418bf4918e2889af48e1099d513830cec85c26ac1e158b52620e33ba8692f893efbb2f958b4424":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (764 bits) is\:\nMyFile(0999)\:  09 41 37 9d 00 fe d1 49 1f e1 5d f2 84 df de 4a\nMyFile(0999)\:  14 2f 68 aa 8d 41 20 23 19 5c ee 66 88 3e 62 90\nMyFile(0999)\:  ff e7 03 f4 ea 59 63 bf 21 27 13 ce e4 6b 10 7c\nMyFile(0999)\:  09 18 2b 5e dc d9 55 ad ac 41 8b f4 91 8e 28 89\nMyFile(0999)\:  af 48 e1 09 9d 51 38 30 ce c8 5c 26 ac 1e 15 8b\nMyFile(0999)\:  52 62 0e 33 ba 86 92 f8 93 ef bb 2f 95 8b 44 24\n"
+
+Debug print mbedtls_mpi: 764 bits #2
+mbedtls_debug_print_mpi:16:"0000000000000000000000000000000000000000000000000000000941379d00fed1491fe15df284dfde4a142f68aa8d412023195cee66883e6290ffe703f4ea5963bf212713cee46b107c09182b5edcd955adac418bf4918e2889af48e1099d513830cec85c26ac1e158b52620e33ba8692f893efbb2f958b4424":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (764 bits) is\:\nMyFile(0999)\:  09 41 37 9d 00 fe d1 49 1f e1 5d f2 84 df de 4a\nMyFile(0999)\:  14 2f 68 aa 8d 41 20 23 19 5c ee 66 88 3e 62 90\nMyFile(0999)\:  ff e7 03 f4 ea 59 63 bf 21 27 13 ce e4 6b 10 7c\nMyFile(0999)\:  09 18 2b 5e dc d9 55 ad ac 41 8b f4 91 8e 28 89\nMyFile(0999)\:  af 48 e1 09 9d 51 38 30 ce c8 5c 26 ac 1e 15 8b\nMyFile(0999)\:  52 62 0e 33 ba 86 92 f8 93 ef bb 2f 95 8b 44 24\n"
+
 Debug print certificate #1 (RSA)
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_BASE64_C:MBEDTLS_RSA_C:MBEDTLS_SHA1_C
 mbedtls_debug_print_crt:"data_files/server1.crt":"MyFile":999:"PREFIX_":"MyFile(0999)\: PREFIX_ #1\:\nMyFile(0999)\: cert. version     \: 3\nMyFile(0999)\: serial number     \: 01\nMyFile(0999)\: issuer name       \: C=NL, O=PolarSSL, CN=PolarSSL Test CA\nMyFile(0999)\: subject name      \: C=NL, O=PolarSSL, CN=PolarSSL Server 1\nMyFile(0999)\: issued  on        \: 2019-02-10 14\:44\:06\nMyFile(0999)\: expires on        \: 2029-02-10 14\:44\:06\nMyFile(0999)\: signed using      \: RSA with SHA1\nMyFile(0999)\: RSA key size      \: 2048 bits\nMyFile(0999)\: basic constraints \: CA=false\nMyFile(0999)\: value of 'crt->rsa.N' (2048 bits) is\:\nMyFile(0999)\:  a9 02 1f 3d 40 6a d5 55 53 8b fd 36 ee 82 65 2e\nMyFile(0999)\:  15 61 5e 89 bf b8 e8 45 90 db ee 88 16 52 d3 f1\nMyFile(0999)\:  43 50 47 96 12 59 64 87 6b fd 2b e0 46 f9 73 be\nMyFile(0999)\:  dd cf 92 e1 91 5b ed 66 a0 6f 89 29 79 45 80 d0\nMyFile(0999)\:  83 6a d5 41 43 77 5f 39 7c 09 04 47 82 b0 57 39\nMyFile(0999)\:  70 ed a3 ec 15 19 1e a8 33 08 47 c1 05 42 a9 fd\nMyFile(0999)\:  4c c3 b4 df dd 06 1f 4d 10 51 40 67 73 13 0f 40\nMyFile(0999)\:  f8 6d 81 25 5f 0a b1 53 c6 30 7e 15 39 ac f9 5a\nMyFile(0999)\:  ee 7f 92 9e a6 05 5b e7 13 97 85 b5 23 92 d9 d4\nMyFile(0999)\:  24 06 d5 09 25 89 75 07 dd a6 1a 8f 3f 09 19 be\nMyFile(0999)\:  ad 65 2c 64 eb 95 9b dc fe 41 5e 17 a6 da 6c 5b\nMyFile(0999)\:  69 cc 02 ba 14 2c 16 24 9c 4a dc cd d0 f7 52 67\nMyFile(0999)\:  73 f1 2d a0 23 fd 7e f4 31 ca 2d 70 ca 89 0b 04\nMyFile(0999)\:  db 2e a6 4f 70 6e 9e ce bd 58 89 e2 53 59 9e 6e\nMyFile(0999)\:  5a 92 65 e2 88 3f 0c 94 19 a3 dd e5 e8 9d 95 13\nMyFile(0999)\:  ed 29 db ab 70 12 dc 5a ca 6b 17 ab 52 82 54 b1\nMyFile(0999)\: value of 'crt->rsa.E' (17 bits) is\:\nMyFile(0999)\:  01 00 01\n"
@@ -44,21 +65,3 @@
 Debug print certificate #2 (EC)
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_BASE64_C:MBEDTLS_ECDSA_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP384R1_ENABLED:MBEDTLS_SHA256_C
 mbedtls_debug_print_crt:"data_files/test-ca2.crt":"MyFile":999:"PREFIX_":"MyFile(0999)\: PREFIX_ #1\:\nMyFile(0999)\: cert. version     \: 3\nMyFile(0999)\: serial number     \: C1\:43\:E2\:7E\:62\:43\:CC\:E8\nMyFile(0999)\: issuer name       \: C=NL, O=PolarSSL, CN=Polarssl Test EC CA\nMyFile(0999)\: subject name      \: C=NL, O=PolarSSL, CN=Polarssl Test EC CA\nMyFile(0999)\: issued  on        \: 2019-02-10 14\:44\:00\nMyFile(0999)\: expires on        \: 2029-02-10 14\:44\:00\nMyFile(0999)\: signed using      \: ECDSA with SHA256\nMyFile(0999)\: EC key size       \: 384 bits\nMyFile(0999)\: basic constraints \: CA=true\nMyFile(0999)\: value of 'crt->eckey.Q(X)' (384 bits) is\:\nMyFile(0999)\:  c3 da 2b 34 41 37 58 2f 87 56 fe fc 89 ba 29 43\nMyFile(0999)\:  4b 4e e0 6e c3 0e 57 53 33 39 58 d4 52 b4 91 95\nMyFile(0999)\:  39 0b 23 df 5f 17 24 62 48 fc 1a 95 29 ce 2c 2d\nMyFile(0999)\: value of 'crt->eckey.Q(Y)' (384 bits) is\:\nMyFile(0999)\:  87 c2 88 52 80 af d6 6a ab 21 dd b8 d3 1c 6e 58\nMyFile(0999)\:  b8 ca e8 b2 69 8e f3 41 ad 29 c3 b4 5f 75 a7 47\nMyFile(0999)\:  6f d5 19 29 55 69 9a 53 3b 20 b4 66 16 60 33 1e\n"
-
-Debug print mbedtls_mpi #1
-mbedtls_debug_print_mpi:16:"01020304050607":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (49 bits) is\:\nMyFile(0999)\:  01 02 03 04 05 06 07\n"
-
-Debug print mbedtls_mpi #2
-mbedtls_debug_print_mpi:16:"00000000000007":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (3 bits) is\:\nMyFile(0999)\:  07\n"
-
-Debug print mbedtls_mpi #3
-mbedtls_debug_print_mpi:16:"00000000000000":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (0 bits) is\:\nMyFile(0999)\:  00\n"
-
-Debug print mbedtls_mpi #4
-mbedtls_debug_print_mpi:16:"0941379d00fed1491fe15df284dfde4a142f68aa8d412023195cee66883e6290ffe703f4ea5963bf212713cee46b107c09182b5edcd955adac418bf4918e2889af48e1099d513830cec85c26ac1e158b52620e33ba8692f893efbb2f958b4424":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (764 bits) is\:\nMyFile(0999)\:  09 41 37 9d 00 fe d1 49 1f e1 5d f2 84 df de 4a\nMyFile(0999)\:  14 2f 68 aa 8d 41 20 23 19 5c ee 66 88 3e 62 90\nMyFile(0999)\:  ff e7 03 f4 ea 59 63 bf 21 27 13 ce e4 6b 10 7c\nMyFile(0999)\:  09 18 2b 5e dc d9 55 ad ac 41 8b f4 91 8e 28 89\nMyFile(0999)\:  af 48 e1 09 9d 51 38 30 ce c8 5c 26 ac 1e 15 8b\nMyFile(0999)\:  52 62 0e 33 ba 86 92 f8 93 ef bb 2f 95 8b 44 24\n"
-
-Debug print mbedtls_mpi #5
-mbedtls_debug_print_mpi:16:"0000000000000000000000000000000000000000000000000000000941379d00fed1491fe15df284dfde4a142f68aa8d412023195cee66883e6290ffe703f4ea5963bf212713cee46b107c09182b5edcd955adac418bf4918e2889af48e1099d513830cec85c26ac1e158b52620e33ba8692f893efbb2f958b4424":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (764 bits) is\:\nMyFile(0999)\:  09 41 37 9d 00 fe d1 49 1f e1 5d f2 84 df de 4a\nMyFile(0999)\:  14 2f 68 aa 8d 41 20 23 19 5c ee 66 88 3e 62 90\nMyFile(0999)\:  ff e7 03 f4 ea 59 63 bf 21 27 13 ce e4 6b 10 7c\nMyFile(0999)\:  09 18 2b 5e dc d9 55 ad ac 41 8b f4 91 8e 28 89\nMyFile(0999)\:  af 48 e1 09 9d 51 38 30 ce c8 5c 26 ac 1e 15 8b\nMyFile(0999)\:  52 62 0e 33 ba 86 92 f8 93 ef bb 2f 95 8b 44 24\n"
-
-Debug print mbedtls_mpi #6
-mbedtls_debug_print_mpi:16:"0000000000000000000000000000000000000000000000000000000041379d00fed1491fe15df284dfde4a142f68aa8d412023195cee66883e6290ffe703f4ea5963bf212713cee46b107c09182b5edcd955adac418bf4918e2889af48e1099d513830cec85c26ac1e158b52620e33ba8692f893efbb2f958b4424":"MyFile":999:"VALUE":"MyFile(0999)\: value of 'VALUE' (759 bits) is\:\nMyFile(0999)\:  41 37 9d 00 fe d1 49 1f e1 5d f2 84 df de 4a 14\nMyFile(0999)\:  2f 68 aa 8d 41 20 23 19 5c ee 66 88 3e 62 90 ff\nMyFile(0999)\:  e7 03 f4 ea 59 63 bf 21 27 13 ce e4 6b 10 7c 09\nMyFile(0999)\:  18 2b 5e dc d9 55 ad ac 41 8b f4 91 8e 28 89 af\nMyFile(0999)\:  48 e1 09 9d 51 38 30 ce c8 5c 26 ac 1e 15 8b 52\nMyFile(0999)\:  62 0e 33 ba 86 92 f8 93 ef bb 2f 95 8b 44 24\n"
diff --git a/tests/suites/test_suite_debug.function b/tests/suites/test_suite_debug.function
index 377d630..fe5549a 100644
--- a/tests/suites/test_suite_debug.function
+++ b/tests/suites/test_suite_debug.function
@@ -179,7 +179,7 @@
 
     TEST_ASSERT( mbedtls_ssl_setup( &ssl, &conf ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &val, radix, value ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &val, radix, value ) == 0 );
 
     mbedtls_ssl_conf_dbg( &conf, string_debug, &buffer);
 
diff --git a/tests/suites/test_suite_dhm.data b/tests/suites/test_suite_dhm.data
index c4795b6..4e13e48 100644
--- a/tests/suites/test_suite_dhm.data
+++ b/tests/suites/test_suite_dhm.data
@@ -1,26 +1,110 @@
+Diffie-Hellman full exchange: tiny x_size
+dhm_do_dhm:10:"93450983094850938450983409623":1:10:"9345098304850938450983409622":0
+
 Diffie-Hellman parameter validation
 dhm_invalid_params:
 
-Diffie-Hellman full exchange #1
-dhm_do_dhm:10:"23":10:"5":0
+Diffie-Hellman full exchange: 5-bit, x_size=3
+dhm_do_dhm:10:"23":3:10:"5":0
 
-Diffie-Hellman full exchange #2
-dhm_do_dhm:10:"93450983094850938450983409623":10:"9345098304850938450983409622":0
+Diffie-Hellman full exchange: 5-bit, x_size=2
+dhm_do_dhm:10:"23":2:10:"5":0
 
-Diffie-Hellman full exchange #3
-dhm_do_dhm:10:"93450983094850938450983409623982317398171298719873918739182739712938719287391879381271":10:"9345098309485093845098340962223981329819812792137312973297123912791271":0
+## Repeat this test case and a few similar ones several times. The RNG state
+## changes, so we get to exercise the code with a few different values.
+Diffie-Hellman full exchange: 5-bit #1
+dhm_do_dhm:10:"23":1:10:"5":0
 
-Diffie-Hellman trivial subgroup #1
-dhm_do_dhm:10:"23":10:"1":MBEDTLS_ERR_DHM_BAD_INPUT_DATA
+Diffie-Hellman full exchange: 5-bit #2
+dhm_do_dhm:10:"23":1:10:"5":0
 
-Diffie-Hellman trivial subgroup #2
-dhm_do_dhm:10:"23":10:"-1":MBEDTLS_ERR_DHM_BAD_INPUT_DATA
+Diffie-Hellman full exchange: 5-bit #3
+dhm_do_dhm:10:"23":1:10:"5":0
+
+Diffie-Hellman full exchange: 5-bit #4
+dhm_do_dhm:10:"23":1:10:"5":0
+
+Diffie-Hellman full exchange: 5-bit #5
+dhm_do_dhm:10:"23":1:10:"5":0
+
+## This is x_size = P_size + 1. Arguably x_size > P_size makes no sense,
+## but it's the current undocumented behavior to treat it the same as when
+## x_size = P_size. If this behavior changes in the future, change the expected
+## return status from 0 to MBEDTLS_ERR_DHM_BAD_INPUT_DATA.
+Diffie-Hellman full exchange: 97-bit, x_size=14
+dhm_do_dhm:10:"93450983094850938450983409623":14:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 97-bit #1
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 97-bit #2
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 97-bit #3
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 97-bit #4
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 97-bit #5
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 97-bit, x_size=12
+dhm_do_dhm:10:"93450983094850938450983409623":12:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 97-bit, x_size=11
+dhm_do_dhm:10:"93450983094850938450983409623":11:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 97-bit, x_size=1 #1
+dhm_do_dhm:10:"93450983094850938450983409623":1:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 97-bit, x_size=1 #2
+dhm_do_dhm:10:"93450983094850938450983409623":1:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 97-bit, x_size=1 #3
+dhm_do_dhm:10:"93450983094850938450983409623":1:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 97-bit, x_size=1 #4
+dhm_do_dhm:10:"93450983094850938450983409623":1:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 97-bit, x_size=1 #5
+dhm_do_dhm:10:"93450983094850938450983409623":1:10:"9345098304850938450983409622":0
+
+Diffie-Hellman full exchange: 286-bit
+dhm_do_dhm:10:"93450983094850938450983409623982317398171298719873918739182739712938719287391879381271":36:10:"9345098309485093845098340962223981329819812792137312973297123912791271":0
 
 Diffie-Hellman small modulus
-dhm_do_dhm:10:"3":10:"5":MBEDTLS_ERR_DHM_MAKE_PARAMS_FAILED
+dhm_do_dhm:10:"3":1:10:"5":MBEDTLS_ERR_DHM_MAKE_PARAMS_FAILED+MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
 Diffie-Hellman zero modulus
-dhm_do_dhm:10:"0":10:"5":MBEDTLS_ERR_DHM_BAD_INPUT_DATA
+dhm_do_dhm:10:"0":1:10:"5":MBEDTLS_ERR_DHM_BAD_INPUT_DATA
+
+Diffie-Hellman with G=0
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"0":MBEDTLS_ERR_DHM_BAD_INPUT_DATA
+
+Diffie-Hellman with G=1
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"1":MBEDTLS_ERR_DHM_BAD_INPUT_DATA
+
+Diffie-Hellman with G=-1
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"-1":MBEDTLS_ERR_DHM_BAD_INPUT_DATA
+
+Diffie-Hellman with G=P-1
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"93450983094850938450983409622":MBEDTLS_ERR_DHM_BAD_INPUT_DATA
+
+Diffie-Hellman with G=P-2
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"93450983094850938450983409621":0
+
+Diffie-Hellman with G=P
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"93450983094850938450983409623":MBEDTLS_ERR_DHM_BAD_INPUT_DATA
+
+Diffie-Hellman with G=P+1
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"93450983094850938450983409624":MBEDTLS_ERR_DHM_BAD_INPUT_DATA
+
+Diffie-Hellman with G=P+2
+dhm_do_dhm:10:"93450983094850938450983409623":13:10:"93450983094850938450983409625":0
+
+Diffie-Hellman: x_size < 0
+dhm_do_dhm:10:"93450983094850938450983409623":-1:10:"9345098304850938450983409622":MBEDTLS_ERR_DHM_BAD_INPUT_DATA
 
 Diffie-Hellman MPI_MAX_SIZE modulus
 dhm_make_public:MBEDTLS_MPI_MAX_SIZE:10:"5":0
diff --git a/tests/suites/test_suite_dhm.function b/tests/suites/test_suite_dhm.function
index 1726b9e..96ff2ac 100644
--- a/tests/suites/test_suite_dhm.function
+++ b/tests/suites/test_suite_dhm.function
@@ -1,5 +1,68 @@
 /* BEGIN_HEADER */
 #include "mbedtls/dhm.h"
+
+/* Sanity checks on a Diffie-Hellman parameter: check the length-value
+ * syntax and check that the value is the expected one (taken from the
+ * DHM context by the caller). */
+static int check_dhm_param_output( const mbedtls_mpi *expected,
+                                   const unsigned char *buffer,
+                                   size_t size,
+                                   size_t *offset )
+{
+    size_t n;
+    mbedtls_mpi actual;
+    int ok = 0;
+    mbedtls_mpi_init( &actual );
+
+    ++mbedtls_test_info.step;
+
+    TEST_ASSERT( size >= *offset + 2 );
+    n = ( buffer[*offset] << 8 ) | buffer[*offset + 1];
+    *offset += 2;
+    /* The DHM param output from Mbed TLS has leading zeros stripped, as
+     * permitted but not required by RFC 5246 \S4.4. */
+    TEST_EQUAL( n, mbedtls_mpi_size( expected ) );
+    TEST_ASSERT( size >= *offset + n );
+    TEST_EQUAL( 0, mbedtls_mpi_read_binary( &actual, buffer + *offset, n ) );
+    TEST_EQUAL( 0, mbedtls_mpi_cmp_mpi( expected, &actual ) );
+    *offset += n;
+
+    ok = 1;
+exit:
+    mbedtls_mpi_free( &actual );
+    return( ok );
+}
+
+/* Sanity checks on Diffie-Hellman parameters: syntax, range, and comparison
+ * against the context. */
+static int check_dhm_params( const mbedtls_dhm_context *ctx,
+                             size_t x_size,
+                             const unsigned char *ske, size_t ske_len )
+{
+    size_t offset = 0;
+
+    /* Check that ctx->X and ctx->GX are within range. */
+    TEST_ASSERT( mbedtls_mpi_cmp_int( &ctx->X, 1 ) > 0 );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &ctx->X, &ctx->P ) < 0 );
+    TEST_ASSERT( mbedtls_mpi_size( &ctx->X ) <= x_size );
+    TEST_ASSERT( mbedtls_mpi_cmp_int( &ctx->GX, 1 ) > 0 );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &ctx->GX, &ctx->P ) < 0 );
+
+    /* Check ske: it must contain P, G and G^X, each prefixed with a
+     * 2-byte size. */
+    if( !check_dhm_param_output( &ctx->P, ske, ske_len, &offset ) )
+        goto exit;
+    if( !check_dhm_param_output( &ctx->G, ske, ske_len, &offset ) )
+        goto exit;
+    if( !check_dhm_param_output( &ctx->GX, ske, ske_len, &offset ) )
+        goto exit;
+    TEST_EQUAL( offset, ske_len );
+
+    return( 1 );
+exit:
+    return( 0 );
+}
+
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES
@@ -115,7 +178,7 @@
 /* END_CASE */
 
 /* BEGIN_CASE */
-void dhm_do_dhm( int radix_P, char *input_P,
+void dhm_do_dhm( int radix_P, char *input_P, int x_size,
                  int radix_G, char *input_G, int result )
 {
     mbedtls_dhm_context ctx_srv;
@@ -129,7 +192,7 @@
     size_t pub_cli_len = 0;
     size_t sec_srv_len;
     size_t sec_cli_len;
-    int x_size, i;
+    int i;
     mbedtls_test_rnd_pseudo_info rnd_info;
 
     mbedtls_dhm_init( &ctx_srv );
@@ -143,19 +206,21 @@
     /*
      * Set params
      */
-    TEST_ASSERT( mbedtls_mpi_read_string( &ctx_srv.P, radix_P, input_P ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &ctx_srv.G, radix_G, input_G ) == 0 );
-    x_size = mbedtls_mpi_size( &ctx_srv.P );
-    pub_cli_len = x_size;
+    TEST_ASSERT( mbedtls_test_read_mpi( &ctx_srv.P, radix_P, input_P ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &ctx_srv.G, radix_G, input_G ) == 0 );
+    pub_cli_len = mbedtls_mpi_size( &ctx_srv.P );
 
     /*
      * First key exchange
      */
+    mbedtls_test_set_step( 10 );
     TEST_ASSERT( mbedtls_dhm_make_params( &ctx_srv, x_size, ske, &ske_len,
                                           &mbedtls_test_rnd_pseudo_rand,
                                           &rnd_info ) == result );
     if ( result != 0 )
         goto exit;
+    if( !check_dhm_params( &ctx_srv, x_size, ske, ske_len ) )
+        goto exit;
 
     ske[ske_len++] = 0;
     ske[ske_len++] = 0;
@@ -179,6 +244,7 @@
     /* Re-do calc_secret on server a few times to test update of blinding values */
     for( i = 0; i < 3; i++ )
     {
+        mbedtls_test_set_step( 20 + i );
         sec_srv_len = 1000;
         TEST_ASSERT( mbedtls_dhm_calc_secret( &ctx_srv, sec_srv,
                                               sizeof( sec_srv ), &sec_srv_len,
@@ -195,9 +261,12 @@
      */
     p = ske;
 
+    mbedtls_test_set_step( 30 );
     TEST_ASSERT( mbedtls_dhm_make_params( &ctx_srv, x_size, ske, &ske_len,
                                           &mbedtls_test_rnd_pseudo_rand,
                                           &rnd_info ) == 0 );
+    if( !check_dhm_params( &ctx_srv, x_size, ske, ske_len ) )
+        goto exit;
     ske[ske_len++] = 0;
     ske[ske_len++] = 0;
     TEST_ASSERT( mbedtls_dhm_read_params( &ctx_cli, &p, ske + ske_len ) == 0 );
@@ -238,7 +307,7 @@
     TEST_ASSERT( mbedtls_mpi_shift_l( &P, ( P_bytes * 8 ) - 1 ) == 0 );
     TEST_ASSERT( mbedtls_mpi_set_bit( &P, 0, 1 ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &G, radix_G, input_G ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &G, radix_G, input_G ) == 0 );
 
     TEST_ASSERT( mbedtls_dhm_set_group( &ctx, &P, &G ) == 0 );
     TEST_ASSERT( mbedtls_dhm_make_public( &ctx, (int) mbedtls_mpi_size( &P ),
@@ -262,8 +331,8 @@
     mbedtls_dhm_init( &ctx );
     mbedtls_mpi_init( &P ); mbedtls_mpi_init( &G );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &P, 16, p ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &G, 16, g ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P, 16, p ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &G, 16, g ) == 0 );
 
     TEST_ASSERT( mbedtls_dhm_parse_dhmfile( &ctx, filename ) == 0 );
 
diff --git a/tests/suites/test_suite_ecdh.function b/tests/suites/test_suite_ecdh.function
index 3ab96fa..69197e6 100644
--- a/tests/suites/test_suite_ecdh.function
+++ b/tests/suites/test_suite_ecdh.function
@@ -240,6 +240,8 @@
 
     rnd_info_A.buf = rnd_buf_A->x;
     rnd_info_A.length = rnd_buf_A->len;
+    rnd_info_A.fallback_f_rng = mbedtls_test_rnd_std_rand;
+    rnd_info_A.fallback_p_rng = NULL;
 
     /* Fix rnd_buf_A->x by shifting it left if necessary */
     if( grp.nbits % 8 != 0 )
@@ -256,6 +258,8 @@
 
     rnd_info_B.buf = rnd_buf_B->x;
     rnd_info_B.length = rnd_buf_B->len;
+    rnd_info_B.fallback_f_rng = mbedtls_test_rnd_std_rand;
+    rnd_info_B.fallback_p_rng = NULL;
 
     /* Fix rnd_buf_B->x by shifting it left if necessary */
     if( grp.nbits % 8 != 0 )
@@ -274,21 +278,21 @@
                                           mbedtls_test_rnd_buffer_rand,
                                           &rnd_info_A ) == 0 );
     TEST_ASSERT( ! mbedtls_ecp_is_zero( &qA ) );
-    TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, xA_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &check, 16, xA_str ) == 0 );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qA.X, &check ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, yA_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &check, 16, yA_str ) == 0 );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qA.Y, &check ) == 0 );
 
     TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dB, &qB,
                                           mbedtls_test_rnd_buffer_rand,
                                           &rnd_info_B ) == 0 );
     TEST_ASSERT( ! mbedtls_ecp_is_zero( &qB ) );
-    TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, xB_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &check, 16, xB_str ) == 0 );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qB.X, &check ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, yB_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &check, 16, yB_str ) == 0 );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qB.Y, &check ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, z_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &check, 16, z_str ) == 0 );
     TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zA, &qB, &dA, NULL, NULL ) == 0 );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zA, &check ) == 0 );
     TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zB, &qA, &dB, NULL, NULL ) == 0 );
@@ -362,9 +366,13 @@
     mbedtls_ecdh_init( &srv );
     mbedtls_ecdh_init( &cli );
 
+    rnd_info_A.fallback_f_rng = mbedtls_test_rnd_std_rand;
+    rnd_info_A.fallback_p_rng = NULL;
     rnd_info_A.buf = dA->x;
     rnd_info_A.length = dA->len;
 
+    rnd_info_B.fallback_f_rng = mbedtls_test_rnd_std_rand;
+    rnd_info_B.fallback_p_rng = NULL;
     rnd_info_B.buf = dB->x;
     rnd_info_B.length = dB->len;
 
diff --git a/tests/suites/test_suite_ecdsa.function b/tests/suites/test_suite_ecdsa.function
index 8157234..d47bb4e 100644
--- a/tests/suites/test_suite_ecdsa.function
+++ b/tests/suites/test_suite_ecdsa.function
@@ -289,9 +289,11 @@
 
     TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
     TEST_ASSERT( mbedtls_ecp_point_read_string( &Q, 16, xQ_str, yQ_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &d, 16, d_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &r_check, 16, r_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &s_check, 16, s_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &d, 16, d_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &r_check, 16, r_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &s_check, 16, s_str ) == 0 );
+    rnd_info.fallback_f_rng = mbedtls_test_rnd_std_rand;
+    rnd_info.fallback_p_rng = NULL;
     rnd_info.buf = rnd_buf->x;
     rnd_info.length = rnd_buf->len;
 
@@ -352,9 +354,9 @@
     memset( hash, 0, sizeof( hash ) );
 
     TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &d, 16, d_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &r_check, 16, r_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &s_check, 16, s_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &d, 16, d_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &r_check, 16, r_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &s_check, 16, s_str ) == 0 );
 
     md_info = mbedtls_md_info_from_type( md_alg );
     TEST_ASSERT( md_info != NULL );
@@ -583,7 +585,7 @@
     memset( sig, 0, sizeof( sig ) );
 
     TEST_ASSERT( mbedtls_ecp_group_load( &ctx.grp, id ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &ctx.d, 16, d_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &ctx.d, 16, d_str ) == 0 );
 
     md_info = mbedtls_md_info_from_type( md_alg );
     TEST_ASSERT( md_info != NULL );
diff --git a/tests/suites/test_suite_ecp.data b/tests/suites/test_suite_ecp.data
index 106791c..5f92ca4 100644
--- a/tests/suites/test_suite_ecp.data
+++ b/tests/suites/test_suite_ecp.data
@@ -276,6 +276,42 @@
 depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
 mbedtls_ecp_gen_key:MBEDTLS_ECP_DP_SECP192R1
 
+ECP generate Montgomery key: Curve25519, random in range
+genkey_mx_known_answer:254:"9e020406080a0c0e10121416181a1c1e20222426282a2c2e30323436383a3df0":"4f0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1ef8"
+
+ECP generate Montgomery key: Curve25519, clear higher bit
+genkey_mx_known_answer:254:"ff0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1ef8":"7f808101820283038404850586068707880889098a0a8b0b8c0c8d0d8e0e8f78"
+
+ECP generate Montgomery key: Curve25519, clear low bits
+genkey_mx_known_answer:254:"9e020406080a0c0e10121416181a1c1e20222426282a2c2e30323436383a3dff":"4f0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1ef8"
+
+ECP generate Montgomery key: Curve25519, random = all-bits-zero
+genkey_mx_known_answer:254:"0000000000000000000000000000000000000000000000000000000000000000":"4000000000000000000000000000000000000000000000000000000000000000"
+
+ECP generate Montgomery key: Curve25519, random = all-bits-one
+genkey_mx_known_answer:254:"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff":"7ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff8"
+
+ECP generate Montgomery key: Curve25519, not enough entropy
+genkey_mx_known_answer:254:"4f0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e":""
+
+ECP generate Montgomery key: Curve448, random in range
+genkey_mx_known_answer:447:"cf0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f30313233343536fc":"cf0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f30313233343536fc"
+
+ECP generate Montgomery key: Curve448, set high bit
+genkey_mx_known_answer:447:"0f0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f30313233343536fc":"8f0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f30313233343536fc"
+
+ECP generate Montgomery key: Curve448, clear low bits
+genkey_mx_known_answer:447:"cf0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f30313233343536ff":"cf0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f30313233343536fc"
+
+ECP generate Montgomery key: Curve448, random = all-bits-zero
+genkey_mx_known_answer:447:"0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000":"8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+
+ECP generate Montgomery key: Curve448, random = all-bits-one
+genkey_mx_known_answer:447:"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff":"fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffc"
+
+ECP generate Montgomery key: Curve448, not enough entropy
+genkey_mx_known_answer:447:"4f0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f30313233343536":""
+
 ECP read key #1 (short weierstrass, too small)
 depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
 mbedtls_ecp_read_key:MBEDTLS_ECP_DP_SECP192R1:"00":MBEDTLS_ERR_ECP_INVALID_KEY:0
diff --git a/tests/suites/test_suite_ecp.function b/tests/suites/test_suite_ecp.function
index 6d23377..063be0f 100644
--- a/tests/suites/test_suite_ecp.function
+++ b/tests/suites/test_suite_ecp.function
@@ -15,6 +15,7 @@
 #define ECP_PT_RESET( x )           \
     mbedtls_ecp_point_free( x );    \
     mbedtls_ecp_point_init( x );
+
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES
@@ -400,9 +401,9 @@
 
     TEST_ASSERT( mbedtls_ecp_group_load( &grp, grp_id ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &P.X, 16, x_hex ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &P.Y, 16, y_hex ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &P.Z, 16, z_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P.X, 16, x_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P.Y, 16, y_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P.Z, 16, z_hex ) == 0 );
 
     TEST_ASSERT( mbedtls_ecp_check_pubkey( &grp, &P ) == ret );
 
@@ -451,13 +452,13 @@
 
     TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &dA, 16, dA_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &xA, 16, xA_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &yA, 16, yA_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &dA, 16, dA_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &xA, 16, xA_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &yA, 16, yA_str ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &dB, 16, dB_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &xZ, 16, xZ_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &yZ, 16, yZ_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &dB, 16, dB_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &xZ, 16, xZ_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &yZ, 16, yZ_str ) == 0 );
 
     mbedtls_ecp_set_max_ops( (unsigned) max_ops );
 
@@ -535,13 +536,13 @@
 
     TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &u1, 16, u1_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &u2, 16, u2_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &xR, 16, xR_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &yR, 16, yR_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &u1, 16, u1_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &u2, 16, u2_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &xR, 16, xR_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &yR, 16, yR_str ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &Q.X, 16, xQ_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Q.Y, 16, yQ_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Q.X, 16, xQ_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Q.Y, 16, yQ_str ) == 0 );
     TEST_ASSERT( mbedtls_mpi_lset( &Q.Z, 1 ) == 0 );
 
     mbedtls_ecp_set_max_ops( (unsigned) max_ops );
@@ -598,14 +599,14 @@
 
     TEST_ASSERT( mbedtls_ecp_check_pubkey( &grp, &grp.G ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &dA, 16, dA_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &xA, 16, xA_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &yA, 16, yA_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &dB, 16, dB_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &xB, 16, xB_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &yB, 16, yB_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &xZ, 16, xZ_str ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &yZ, 16, yZ_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &dA, 16, dA_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &xA, 16, xA_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &yA, 16, yA_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &dB, 16, dB_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &xB, 16, xB_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &yB, 16, yB_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &xZ, 16, xZ_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &yZ, 16, yZ_str ) == 0 );
 
     TEST_ASSERT( mbedtls_ecp_mul( &grp, &R, &dA, &grp.G,
                           &mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 );
@@ -653,11 +654,11 @@
 
     TEST_ASSERT( mbedtls_ecp_check_pubkey( &grp, &grp.G ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &dA, 16, dA_hex ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &dB, 16, dB_hex ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &xA, 16, xA_hex ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &xB, 16, xB_hex ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &xS, 16, xS_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &dA, 16, dA_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &dB, 16, dB_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &xA, 16, xA_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &xB, 16, xB_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &xS, 16, xS_hex ) == 0 );
 
     TEST_ASSERT( mbedtls_ecp_mul( &grp, &R, &dA, &grp.G,
                           &mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 );
@@ -816,7 +817,7 @@
     mbedtls_mpi_init( &N ); mbedtls_mpi_init( &R );
     mbedtls_ecp_group_init( &grp );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, 16, N_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, 16, N_str ) == 0 );
     TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
     TEST_ASSERT( grp.modp != NULL );
 
@@ -855,9 +856,9 @@
 
     TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &P.X, 16, x ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &P.Y, 16, y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &P.Z, 16, z ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P.X, 16, x ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P.Y, 16, y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P.Z, 16, z ) == 0 );
 
     TEST_ASSERT( mbedtls_ecp_point_write_binary( &grp, &P, format,
                                    &olen, buf, blen ) == ret );
@@ -886,9 +887,9 @@
 
     TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, 16, x ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, 16, y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Z, 16, z ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, 16, x ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, 16, y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Z, 16, z ) == 0 );
 
     TEST_ASSERT( mbedtls_ecp_point_read_binary( &grp, &P, buf->x, buf->len ) == ret );
 
@@ -930,9 +931,9 @@
 
     TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, 16, x ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, 16, y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Z, 16, z ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, 16, x ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, 16, y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Z, 16, z ) == 0 );
 
     TEST_ASSERT( mbedtls_ecp_tls_read_point( &grp, &P, &vbuf, buf->len ) == ret );
 
@@ -1067,7 +1068,7 @@
     mbedtls_mpi_init( &d );
 
     TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &d, 16, key_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &d, 16, key_hex ) == 0 );
 
     TEST_ASSERT( mbedtls_ecp_check_privkey( &grp, &d ) == ret );
 
@@ -1094,7 +1095,7 @@
     if( id != MBEDTLS_ECP_DP_NONE )
         TEST_ASSERT( mbedtls_ecp_group_load( &prv.grp, id ) == 0 );
     TEST_ASSERT( mbedtls_ecp_point_read_string( &prv.Q, 16, Qx, Qy ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &prv.d, 16, d ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &prv.d, 16, d ) == 0 );
 
     TEST_ASSERT( mbedtls_ecp_check_pub_priv( &pub, &prv ) == ret );
 
@@ -1237,6 +1238,55 @@
 }
 /* END_CASE */
 
+/* BEGIN_CASE depends_on:MBEDTLS_TEST_HOOKS:MBEDTLS_ECP_MONTGOMERY_ENABLED */
+void genkey_mx_known_answer( int bits, data_t *seed, data_t *expected )
+{
+    mbedtls_test_rnd_buf_info rnd_info;
+    mbedtls_mpi d;
+    int ret;
+    uint8_t *actual = NULL;
+
+    mbedtls_mpi_init( &d );
+    rnd_info.buf = seed->x;
+    rnd_info.length = seed->len;
+    rnd_info.fallback_f_rng = NULL;
+    rnd_info.fallback_p_rng = NULL;
+
+    ASSERT_ALLOC( actual, expected->len );
+
+    ret = mbedtls_ecp_gen_privkey_mx( bits, &d,
+                                      mbedtls_test_rnd_buffer_rand, &rnd_info );
+
+    if( expected->len == 0 )
+    {
+        /* Expecting an error (happens if there isn't enough randomness) */
+        TEST_ASSERT( ret != 0 );
+    }
+    else
+    {
+        TEST_EQUAL( ret, 0 );
+        TEST_EQUAL( (size_t) bits + 1, mbedtls_mpi_bitlen( &d ) );
+        TEST_EQUAL( 0, mbedtls_mpi_write_binary( &d, actual, expected->len ) );
+        /* Test the exact result. This assumes that the output of the
+         * RNG is used in a specific way, which is overly constraining.
+         * The advantage is that it's easier to test the expected properties
+         * of the generated key:
+         * - The most significant bit must be at a specific positions
+         *   (can be enforced by checking the bit-length).
+         * - The least significant bits must have specific values
+         *   (can be enforced by checking these bits).
+         * - Other bits must be random (by testing with different RNG outputs,
+         *   we validate that those bits are indeed influenced by the RNG). */
+        ASSERT_COMPARE( expected->x, expected->len,
+                        actual, expected->len );
+    }
+
+exit:
+    mbedtls_free( actual );
+    mbedtls_mpi_free( &d );
+}
+/* END_CASE */
+
 /* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
 void ecp_selftest(  )
 {
diff --git a/tests/suites/test_suite_mpi.data b/tests/suites/test_suite_mpi.data
index 59fd782..2addd23 100644
--- a/tests/suites/test_suite_mpi.data
+++ b/tests/suites/test_suite_mpi.data
@@ -68,13 +68,13 @@
 mpi_read_write_string:10:"56125680981752282334141896320372489490613963693556392520816017892111350604111697682705498319512049040516698827829292076808006940873974979584527073481012636016353913462376755556720019831187364993587901952757307830896531678727717924":16:"0941379d00fed1491fe15df284dfde4a142f68aa8d412023195cee66883e6290ffe703f4ea5963bf212713cee46b107c09182b5edcd955adac418bf4918e2889af48e1099d513830cec85c26ac1e158b52620e33ba8692f893efbb2f958b4424":200:0:0
 
 Test mpi_read_write_string #8 (Empty MPI hex -> hex)
-mpi_read_write_string:16:"":16:"00":4:0:0
+mpi_read_write_string:16:"":16:"":4:0:0
 
 Test mpi_read_write_string #9 (Empty MPI hex -> dec)
 mpi_read_write_string:16:"":10:"0":4:0:0
 
 Test mpi_read_write_string #8 (Empty MPI dec -> hex)
-mpi_read_write_string:10:"":16:"00":4:0:0
+mpi_read_write_string:10:"":16:"":4:0:0
 
 Test mpi_read_write_string #9 (Empty MPI dec -> dec)
 mpi_read_write_string:10:"":10:"0":4:0:0
@@ -121,6 +121,12 @@
 Base test mbedtls_mpi_write_file #1
 mbedtls_mpi_write_file:10:"56125680981752282334141896320372489490613963693556392520816017892111350604111697682705498319512049040516698827829292076808006940873974979584527073481012636016353913462376755556720019831187364993587901952757307830896531678727717924":16:"data_files/mpi_write"
 
+Test mbedtls_mpi_lsb: 0 (null)
+mbedtls_mpi_lsb:16:"":0
+
+Test mbedtls_mpi_lsb: 0 (1 limb)
+mbedtls_mpi_lsb:16:"0":0
+
 Base test mbedtls_mpi_lsb #1
 mbedtls_mpi_lsb:10:"56125680981752282334141896320372489490613963693556392520816017892111350604111697682705498319512049040516698827829292076808006940873974979584527073481012636016353913462376755556720019831187364993587901952757307830896531678727717924":2
 
@@ -151,7 +157,10 @@
 Base test mbedtls_mpi_bitlen #6
 mbedtls_mpi_bitlen:10:"10":4
 
-Base test mbedtls_mpi_bitlen #7
+Base test mbedtls_mpi_bitlen: 0 (null)
+mbedtls_mpi_bitlen:10:"":0
+
+Base test mbedtls_mpi_bitlen: 0 (1 limb)
 mbedtls_mpi_bitlen:10:"0":0
 
 Base test mbedtls_mpi_cmp_int #1
@@ -199,6 +208,90 @@
 Base test mbedtls_mpi_cmp_mpi (Mixed values) #6
 mbedtls_mpi_cmp_mpi:10:"-2":10:"31231231289798":-1
 
+Test mbedtls_mpi_cmp_mpi: 0 (null) = 0 (null)
+mbedtls_mpi_cmp_mpi:10:"":10:"":0
+
+Test mbedtls_mpi_cmp_mpi: 0 (null) = 0 (1 limb)
+mbedtls_mpi_cmp_mpi:10:"":10:"0":0
+
+Test mbedtls_mpi_cmp_mpi: 0 (1 limb) = 0 (null)
+mbedtls_mpi_cmp_mpi:10:"0":10:"":0
+
+Test mbedtls_mpi_cmp_mpi: 0 (1 limb) = 0 (1 limb)
+mbedtls_mpi_cmp_mpi:10:"0":10:"0":0
+
+Test mbedtls_mpi_cmp_mpi: 0 (null) < positive
+mbedtls_mpi_cmp_mpi:10:"":10:"123":-1
+
+Test mbedtls_mpi_cmp_mpi: 0 (1 limb) < positive
+mbedtls_mpi_cmp_mpi:10:"0":10:"123":-1
+
+Test mbedtls_mpi_cmp_mpi: 0 (null) > negative
+mbedtls_mpi_cmp_mpi:10:"":10:"-123":1
+
+Test mbedtls_mpi_cmp_mpi: 0 (1 limb) > negative
+mbedtls_mpi_cmp_mpi:10:"0":10:"-123":1
+
+Test mbedtls_mpi_cmp_mpi: positive > 0 (null)
+mbedtls_mpi_cmp_mpi:10:"123":10:"":1
+
+Test mbedtls_mpi_cmp_mpi: positive > 0 (1 limb)
+mbedtls_mpi_cmp_mpi:10:"123":10:"0":1
+
+Test mbedtls_mpi_cmp_mpi: negative < 0 (null)
+mbedtls_mpi_cmp_mpi:10:"-123":10:"":-1
+
+Test mbedtls_mpi_cmp_mpi: negative < 0 (1 limb)
+mbedtls_mpi_cmp_mpi:10:"-123":10:"0":-1
+
+Test mbedtls_mpi_cmp_mpi: 0 (null) < positive with leading zero limb
+mbedtls_mpi_cmp_mpi:16:"":16:"0000000000000000123":-1
+
+Test mbedtls_mpi_cmp_mpi: 0 (1 limb) < positive with leading zero limb
+mbedtls_mpi_cmp_mpi:16:"0":16:"0000000000000000123":-1
+
+Test mbedtls_mpi_cmp_mpi: 0 (null) > negative with leading zero limb
+mbedtls_mpi_cmp_mpi:16:"":16:"-0000000000000000123":1
+
+Test mbedtls_mpi_cmp_mpi: 0 (1 limb) > negative with leading zero limb
+mbedtls_mpi_cmp_mpi:16:"0":16:"-0000000000000000123":1
+
+Test mbedtls_mpi_cmp_mpi: positive with leading zero limb > 0 (null)
+mbedtls_mpi_cmp_mpi:16:"0000000000000000123":16:"":1
+
+Test mbedtls_mpi_cmp_mpi: positive with leading zero limb > 0 (1 limb)
+mbedtls_mpi_cmp_mpi:16:"0000000000000000123":16:"0":1
+
+Test mbedtls_mpi_cmp_mpi: negative with leading zero limb < 0 (null)
+mbedtls_mpi_cmp_mpi:16:"-0000000000000000123":16:"":-1
+
+Test mbedtls_mpi_cmp_mpi: negative with leading zero limb < 0 (1 limb)
+mbedtls_mpi_cmp_mpi:16:"-0000000000000000123":16:"0":-1
+
+Test mbedtls_mpi_cmp_mpi: 0 (null) < large positive
+mbedtls_mpi_cmp_mpi:16:"":16:"1230000000000000000":-1
+
+Test mbedtls_mpi_cmp_mpi: 0 (1 limb) < large positive
+mbedtls_mpi_cmp_mpi:16:"0":16:"1230000000000000000":-1
+
+Test mbedtls_mpi_cmp_mpi: 0 (null) > large negative
+mbedtls_mpi_cmp_mpi:16:"":16:"-1230000000000000000":1
+
+Test mbedtls_mpi_cmp_mpi: 0 (1 limb) > large negative
+mbedtls_mpi_cmp_mpi:16:"0":16:"-1230000000000000000":1
+
+Test mbedtls_mpi_cmp_mpi: large positive > 0 (null)
+mbedtls_mpi_cmp_mpi:16:"1230000000000000000":16:"":1
+
+Test mbedtls_mpi_cmp_mpi: large positive > 0 (1 limb)
+mbedtls_mpi_cmp_mpi:16:"1230000000000000000":16:"0":1
+
+Test mbedtls_mpi_cmp_mpi: large negative < 0 (null)
+mbedtls_mpi_cmp_mpi:16:"-1230000000000000000":16:"":-1
+
+Test mbedtls_mpi_cmp_mpi: large negative < 0 (1 limb)
+mbedtls_mpi_cmp_mpi:16:"-1230000000000000000":16:"0":-1
+
 Base test mbedtls_mpi_lt_mpi_ct #1
 mbedtls_mpi_lt_mpi_ct:1:"2B5":1:"2B5":0:0
 
@@ -232,6 +325,9 @@
 Base test mbedtls_mpi_lt_mpi_ct (Y is longer in storage)
 mbedtls_mpi_lt_mpi_ct:3:"2B5":4:"2B5":0:MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
+Base test mbedtls_mpi_lt_mpi_ct (length=0)
+mbedtls_mpi_lt_mpi_ct:0:"":0:"":0:0
+
 Base test mbedtls_mpi_lt_mpi_ct (corner case - 64 bit) #1
 mbedtls_mpi_lt_mpi_ct:2:"7FFFFFFFFFFFFFFF":2:"FF":0:0
 
@@ -304,7 +400,16 @@
 Base test mbedtls_mpi_cmp_abs (Negative values) #3
 mbedtls_mpi_cmp_abs:10:"-2":10:"-1":1
 
-Base test mbedtls_mpi_cmp_abs (Zero and Zero) #4
+Test mbedtls_mpi_cmp_abs: 0 (null) = 0 (null)
+mbedtls_mpi_cmp_abs:10:"":10:"":0
+
+Test mbedtls_mpi_cmp_abs: 0 (null) = 0 (1 limb)
+mbedtls_mpi_cmp_abs:10:"":10:"0":0
+
+Test mbedtls_mpi_cmp_abs: 0 (1 limb) = 0 (null)
+mbedtls_mpi_cmp_abs:10:"0":10:"":0
+
+Test mbedtls_mpi_cmp_abs: 0 (1 limb) = 0 (1 limb)
 mbedtls_mpi_cmp_abs:10:"0":10:"0":0
 
 Base test mbedtls_mpi_cmp_abs (Mix values) #1
@@ -316,84 +421,261 @@
 Base test mbedtls_mpi_cmp_abs (Mix values) #3
 mbedtls_mpi_cmp_abs:10:"-2":10:"1":1
 
-Copy zero (1 limb) to positive (1 limb)
-mbedtls_mpi_copy_sint:0:1500
+Copy large negative to large negative
+mbedtls_mpi_copy:"-ca5cadedb01dfaceacc01ade":"-face1e55ca11ab1ecab005e5"
 
-Copy zero (1 limb) to negative (1 limb)
-mbedtls_mpi_copy_sint:0:-1500
+Copy large negative to large positive
+mbedtls_mpi_copy:"-ca5cadedb01dfaceacc01ade":"face1e55ca11ab1ecab005e5"
 
-Copy positive (1 limb) to zero (1 limb)
-mbedtls_mpi_copy_sint:1500:0
+Copy large negative to small negative
+mbedtls_mpi_copy:"-ca5cadedb01dfaceacc01ade":"-beef"
 
-Copy negative (1 limb) to zero (1 limb)
-mbedtls_mpi_copy_sint:-1500:0
+Copy large negative to small positive
+mbedtls_mpi_copy:"-ca5cadedb01dfaceacc01ade":"beef"
 
-Copy positive (1 limb) to negative (1 limb)
-mbedtls_mpi_copy_sint:1500:-42
+Copy large negative to zero (1 limb)
+mbedtls_mpi_copy:"-ca5cadedb01dfaceacc01ade":"0"
 
-Copy negative (1 limb) to positive (1 limb)
-mbedtls_mpi_copy_sint:-42:1500
+Copy large negative to zero (null)
+mbedtls_mpi_copy:"-ca5cadedb01dfaceacc01ade":""
+
+Copy large positive to large negative
+mbedtls_mpi_copy:"ca5cadedb01dfaceacc01ade":"-face1e55ca11ab1ecab005e5"
+
+Copy large positive to large positive
+mbedtls_mpi_copy:"ca5cadedb01dfaceacc01ade":"face1e55ca11ab1ecab005e5"
+
+Copy large positive to small negative
+mbedtls_mpi_copy:"ca5cadedb01dfaceacc01ade":"-beef"
+
+Copy large positive to small positive
+mbedtls_mpi_copy:"ca5cadedb01dfaceacc01ade":"beef"
+
+Copy large positive to zero (1 limb)
+mbedtls_mpi_copy:"ca5cadedb01dfaceacc01ade":"0"
+
+Copy large positive to zero (null)
+mbedtls_mpi_copy:"ca5cadedb01dfaceacc01ade":""
+
+Copy small negative to large negative
+mbedtls_mpi_copy:"-bead":"-face1e55ca11ab1ecab005e5"
+
+Copy small negative to large positive
+mbedtls_mpi_copy:"-bead":"face1e55ca11ab1ecab005e5"
+
+Copy small negative to small negative
+mbedtls_mpi_copy:"-bead":"-beef"
+
+Copy small negative to small positive
+mbedtls_mpi_copy:"-bead":"beef"
+
+Copy small negative to zero (1 limb)
+mbedtls_mpi_copy:"-bead":"0"
+
+Copy small negative to zero (null)
+mbedtls_mpi_copy:"-bead":""
+
+Copy small positive to large negative
+mbedtls_mpi_copy:"bead":"-face1e55ca11ab1ecab005e5"
+
+Copy small positive to large positive
+mbedtls_mpi_copy:"bead":"face1e55ca11ab1ecab005e5"
+
+Copy small positive to small negative
+mbedtls_mpi_copy:"bead":"-beef"
+
+Copy small positive to small positive
+mbedtls_mpi_copy:"bead":"beef"
+
+Copy small positive to zero (1 limb)
+mbedtls_mpi_copy:"bead":"0"
+
+Copy small positive to zero (null)
+mbedtls_mpi_copy:"bead":""
+
+Copy zero (1 limb) to large negative
+mbedtls_mpi_copy:"0":"-face1e55ca11ab1ecab005e5"
+
+Copy zero (1 limb) to large positive
+mbedtls_mpi_copy:"0":"face1e55ca11ab1ecab005e5"
+
+Copy zero (1 limb) to small negative
+mbedtls_mpi_copy:"0":"-beef"
+
+Copy zero (1 limb) to small positive
+mbedtls_mpi_copy:"0":"beef"
+
+Copy zero (1 limb) to zero (1 limb)
+mbedtls_mpi_copy:"0":"0"
+
+Copy zero (1 limb) to zero (null)
+mbedtls_mpi_copy:"0":""
+
+Copy zero (null) to large negative
+mbedtls_mpi_copy:"":"-face1e55ca11ab1ecab005e5"
+
+Copy zero (null) to large positive
+mbedtls_mpi_copy:"":"face1e55ca11ab1ecab005e5"
+
+Copy zero (null) to small negative
+mbedtls_mpi_copy:"":"-beef"
+
+Copy zero (null) to small positive
+mbedtls_mpi_copy:"":"beef"
+
+Copy zero (null) to zero (1 limb)
+mbedtls_mpi_copy:"":"0"
 
 Copy zero (null) to zero (null)
-mbedtls_mpi_copy_binary:"":""
+mbedtls_mpi_copy:"":""
 
-Copy zero (null) to positive (1 limb)
-mbedtls_mpi_copy_binary:"":"1234"
+Copy self: large negative
+mpi_copy_self:"-ca5cadedb01dfaceacc01ade"
 
-Copy positive (1 limb) to zero (null)
-mbedtls_mpi_copy_binary:"1234":""
+Copy self: large positive
+mpi_copy_self:"ca5cadedb01dfaceacc01ade"
 
-Copy positive to larger
-mbedtls_mpi_copy_binary:"bead":"ca5cadedb01dfaceacc01ade"
+Copy self: small negative
+mpi_copy_self:"-bead"
 
-Copy positive to smaller
-mbedtls_mpi_copy_binary:"ca5cadedb01dfaceacc01ade":"bead"
-
-Copy self: positive (1 limb)
-mpi_copy_self:14
+Copy self: small positive
+mpi_copy_self:"bead"
 
 Copy self: zero (1 limb)
-mpi_copy_self:0
+mpi_copy_self:"0"
 
-Swap zero (1 limb) with positive (1 limb)
-mbedtls_mpi_swap_sint:0:1500
+Copy self: zero (null)
+mpi_copy_self:""
 
-Swap zero (1 limb) with negative (1 limb)
-mbedtls_mpi_swap_sint:0:-1500
+Swap large negative with large negative
+mbedtls_mpi_swap:"-ca5cadedb01dfaceacc01ade":"-face1e55ca11ab1ecab005e5"
 
-Swap positive (1 limb) with zero (1 limb)
-mbedtls_mpi_swap_sint:1500:0
+Swap large negative with large positive
+mbedtls_mpi_swap:"-ca5cadedb01dfaceacc01ade":"face1e55ca11ab1ecab005e5"
 
-Swap negative (1 limb) with zero (1 limb)
-mbedtls_mpi_swap_sint:-1500:0
+Swap large negative with small negative
+mbedtls_mpi_swap:"-ca5cadedb01dfaceacc01ade":"-beef"
 
-Swap positive (1 limb) with negative (1 limb)
-mbedtls_mpi_swap_sint:1500:-42
+Swap large negative with small positive
+mbedtls_mpi_swap:"-ca5cadedb01dfaceacc01ade":"beef"
 
-Swap negative (1 limb) with positive (1 limb)
-mbedtls_mpi_swap_sint:-42:1500
+Swap large negative with zero (1 limb)
+mbedtls_mpi_swap:"-ca5cadedb01dfaceacc01ade":"0"
+
+Swap large negative with zero (null)
+mbedtls_mpi_swap:"-ca5cadedb01dfaceacc01ade":""
+
+Swap large positive with large negative
+mbedtls_mpi_swap:"ca5cadedb01dfaceacc01ade":"-face1e55ca11ab1ecab005e5"
+
+Swap large positive with large positive
+mbedtls_mpi_swap:"ca5cadedb01dfaceacc01ade":"face1e55ca11ab1ecab005e5"
+
+Swap large positive with small negative
+mbedtls_mpi_swap:"ca5cadedb01dfaceacc01ade":"-beef"
+
+Swap large positive with small positive
+mbedtls_mpi_swap:"ca5cadedb01dfaceacc01ade":"beef"
+
+Swap large positive with zero (1 limb)
+mbedtls_mpi_swap:"ca5cadedb01dfaceacc01ade":"0"
+
+Swap large positive with zero (null)
+mbedtls_mpi_swap:"ca5cadedb01dfaceacc01ade":""
+
+Swap small negative with large negative
+mbedtls_mpi_swap:"-bead":"-face1e55ca11ab1ecab005e5"
+
+Swap small negative with large positive
+mbedtls_mpi_swap:"-bead":"face1e55ca11ab1ecab005e5"
+
+Swap small negative with small negative
+mbedtls_mpi_swap:"-bead":"-beef"
+
+Swap small negative with small positive
+mbedtls_mpi_swap:"-bead":"beef"
+
+Swap small negative with zero (1 limb)
+mbedtls_mpi_swap:"-bead":"0"
+
+Swap small negative with zero (null)
+mbedtls_mpi_swap:"-bead":""
+
+Swap small positive with large negative
+mbedtls_mpi_swap:"bead":"-face1e55ca11ab1ecab005e5"
+
+Swap small positive with large positive
+mbedtls_mpi_swap:"bead":"face1e55ca11ab1ecab005e5"
+
+Swap small positive with small negative
+mbedtls_mpi_swap:"bead":"-beef"
+
+Swap small positive with small positive
+mbedtls_mpi_swap:"bead":"beef"
+
+Swap small positive with zero (1 limb)
+mbedtls_mpi_swap:"bead":"0"
+
+Swap small positive with zero (null)
+mbedtls_mpi_swap:"bead":""
+
+Swap zero (1 limb) with large negative
+mbedtls_mpi_swap:"0":"-face1e55ca11ab1ecab005e5"
+
+Swap zero (1 limb) with large positive
+mbedtls_mpi_swap:"0":"face1e55ca11ab1ecab005e5"
+
+Swap zero (1 limb) with small negative
+mbedtls_mpi_swap:"0":"-beef"
+
+Swap zero (1 limb) with small positive
+mbedtls_mpi_swap:"0":"beef"
+
+Swap zero (1 limb) with zero (1 limb)
+mbedtls_mpi_swap:"0":"0"
+
+Swap zero (1 limb) with zero (null)
+mbedtls_mpi_swap:"0":""
+
+Swap zero (null) with large negative
+mbedtls_mpi_swap:"":"-face1e55ca11ab1ecab005e5"
+
+Swap zero (null) with large positive
+mbedtls_mpi_swap:"":"face1e55ca11ab1ecab005e5"
+
+Swap zero (null) with small negative
+mbedtls_mpi_swap:"":"-beef"
+
+Swap zero (null) with small positive
+mbedtls_mpi_swap:"":"beef"
+
+Swap zero (null) with zero (1 limb)
+mbedtls_mpi_swap:"":"0"
 
 Swap zero (null) with zero (null)
-mbedtls_mpi_swap_binary:"":""
+mbedtls_mpi_swap:"":""
 
-Swap zero (null) with positive (1 limb)
-mbedtls_mpi_swap_binary:"":"1234"
+Swap self: large negative
+mpi_swap_self:"-ca5cadedb01dfaceacc01ade"
 
-Swap positive (1 limb) with zero (null)
-mbedtls_mpi_swap_binary:"1234":""
+Swap self: large positive
+mpi_swap_self:"ca5cadedb01dfaceacc01ade"
 
-Swap positive with larger
-mbedtls_mpi_swap_binary:"bead":"ca5cadedb01dfaceacc01ade"
+Swap self: small negative
+mpi_swap_self:"-bead"
 
-Swap positive with smaller
-mbedtls_mpi_swap_binary:"ca5cadedb01dfaceacc01ade":"bead"
+Swap self: small positive
+mpi_swap_self:"bead"
 
-Swap self: 1 limb
-mpi_swap_self:"face"
+Swap self: zero (1 limb)
+mpi_swap_self:"0"
 
-Swap self: null
+Swap self: zero (null)
 mpi_swap_self:""
 
+Shrink 0 limbs in a buffer of size 0 to 0
+mbedtls_mpi_shrink:0:0:0:0
+
 Shrink 2 limbs in a buffer of size 2 to 4
 mbedtls_mpi_shrink:2:2:4:4
 
@@ -418,42 +700,6 @@
 Shrink 0 limbs in a buffer of size 4 to 0 yielding 1
 mbedtls_mpi_shrink:4:0:0:1
 
-Test mbedtls_mpi_safe_cond_assign #1
-mbedtls_mpi_safe_cond_assign:+1:"01":+1:"02"
-
-Test mbedtls_mpi_safe_cond_assign #2
-mbedtls_mpi_safe_cond_assign:+1:"FF000000000000000001":+1:"02"
-
-Test mbedtls_mpi_safe_cond_assign #3
-mbedtls_mpi_safe_cond_assign:+1:"01":+1:"FF000000000000000002"
-
-Test mbedtls_mpi_safe_cond_assign #4
-mbedtls_mpi_safe_cond_assign:+1:"01":-1:"02"
-
-Test mbedtls_mpi_safe_cond_assign #5
-mbedtls_mpi_safe_cond_assign:-1:"01":+1:"02"
-
-Test mbedtls_mpi_safe_cond_assign #6
-mbedtls_mpi_safe_cond_assign:-1:"01":-1:"02"
-
-Test mbedtls_mpi_safe_cond_swap #1
-mbedtls_mpi_safe_cond_swap:+1:"01":+1:"02"
-
-Test mbedtls_mpi_safe_cond_swap #2
-mbedtls_mpi_safe_cond_swap:+1:"FF000000000000000001":+1:"02"
-
-Test mbedtls_mpi_safe_cond_swap #3
-mbedtls_mpi_safe_cond_swap:+1:"01":+1:"FF000000000000000002"
-
-Test mbedtls_mpi_safe_cond_swap #4
-mbedtls_mpi_safe_cond_swap:+1:"01":-1:"02"
-
-Test mbedtls_mpi_safe_cond_swap #5
-mbedtls_mpi_safe_cond_swap:-1:"01":+1:"02"
-
-Test mbedtls_mpi_safe_cond_swap #6
-mbedtls_mpi_safe_cond_swap:-1:"01":-1:"02"
-
 Base test mbedtls_mpi_add_abs #1
 mbedtls_mpi_add_abs:10:"12345678":10:"642531":10:"12988209"
 
@@ -466,6 +712,15 @@
 Base test mbedtls_mpi_add_abs #4
 mbedtls_mpi_add_abs:10:"-12345678":10:"-642531":10:"12988209"
 
+Test mbedtls_mpi_add_abs: 0 (null) + 0 (null)
+mbedtls_mpi_add_abs:16:"":16:"":16:"0"
+
+Test mbedtls_mpi_add_abs: 0 (null) + 1
+mbedtls_mpi_add_abs:16:"":16:"01":16:"01"
+
+Test mbedtls_mpi_add_abs: 1 + 0 (null)
+mbedtls_mpi_add_abs:16:"01":16:"":16:"01"
+
 Test mbedtls_mpi_add_abs #1
 mbedtls_mpi_add_abs:10:"-643808006803554439230129854961492699151386107534013432918073439524138264842370630061369715394739134090922937332590384720397133335969549256322620979036686633213903952966175107096769180017646161851573147596390153":10:"56125680981752282333498088313568935051383833838594899821664631784577337171193624243181360054669678410455329112434552942717084003541384594864129940145043086760031292483340068923506115878221189886491132772739661669044958531131327771":10:"56125680981752282334141896320372489490613963693556392520816017892111350604111697682705498319512049040516698827829292076808006940873974979584527073481012636016353913462376755556720019831187364993587901952757307830896531678727717924"
 
@@ -487,6 +742,21 @@
 Base test mbedtls_mpi_add_mpi #4
 mbedtls_mpi_add_mpi:10:"-12345678":10:"-642531":10:"-12988209"
 
+Test mbedtls_mpi_add_mpi: 0 (null) + 0 (null)
+mbedtls_mpi_add_mpi:16:"":16:"":16:"0"
+
+Test mbedtls_mpi_add_mpi: 0 (null) + 1
+mbedtls_mpi_add_mpi:16:"":16:"01":16:"01"
+
+Test mbedtls_mpi_add_mpi: 1 + 0 (null)
+mbedtls_mpi_add_mpi:16:"01":16:"":16:"01"
+
+Test mbedtls_mpi_add_mpi: 0 (null) + -1
+mbedtls_mpi_add_mpi:16:"":16:"-01":16:"-01"
+
+Test mbedtls_mpi_add_mpi: -1 + 0 (null)
+mbedtls_mpi_add_mpi:16:"-01":16:"":16:"-01"
+
 Test mbedtls_mpi_add_mpi #1
 mbedtls_mpi_add_mpi:10:"203956878356401977405765866929034577280193993314348263094772646453283062722701277632936616063144088173312372882677123879538709400158306567338328279154499698366071906766440037074217117805690872792848149112022286332144876183376326512083574821647933992961249917319836219304274280243803104015000563790123":10:"531872289054204184185084734375133399408303613982130856645299464930952178606045848877129147820387996428175564228204785846141207532462936339834139412401975338705794646595487324365194792822189473092273993580587964571659678084484152603881094176995594813302284232006001752128168901293560051833646881436219":10:"735829167410606161590850601304167976688497607296479119740072111384235241328747126510065763883532084601487937110881909725679916932621242907172467691556475037071866553361927361439411910627880345885122142692610250903804554267860479115964668998643528806263534149325837971432443181537363155848647445226342"
 
@@ -508,6 +778,12 @@
 Test mbedtls_mpi_add_int #2
 mbedtls_mpi_add_int:10:"2039568783564019774057658669290345772801939933143482630947726464532830627227012776329":-9871232:10:"2039568783564019774057658669290345772801939933143482630947726464532830627227002905097"
 
+Test mbedtls_mpi_add_int: 0 (null) + 0
+mbedtls_mpi_add_int:16:"":0:16:"0"
+
+Test mbedtls_mpi_add_int: 0 (null) + 1
+mbedtls_mpi_add_int:16:"":1:16:"1"
+
 Base test mbedtls_mpi_sub_abs #1 (|B| > |A|)
 mbedtls_mpi_sub_abs:10:"5":10:"7":10:"0":MBEDTLS_ERR_MPI_NEGATIVE_VALUE
 
@@ -544,6 +820,24 @@
 Base test mbedtls_mpi_sub_abs #4
 mbedtls_mpi_sub_abs:10:"7":10:"-5":10:"2":0
 
+Test mbedtls_mpi_sub_abs: 0 (null) - 0 (null)
+mbedtls_mpi_sub_abs:16:"":16:"":16:"":0
+
+Test mbedtls_mpi_sub_abs: 0 (null) - 0 (1 limb)
+mbedtls_mpi_sub_abs:16:"":16:"00":16:"":0
+
+Test mbedtls_mpi_sub_abs: 0 (1 limb) - 0 (null)
+mbedtls_mpi_sub_abs:16:"00":16:"":16:"":0
+
+Test mbedtls_mpi_sub_abs: 0 (1 limb) - 0 (1 limb)
+mbedtls_mpi_sub_abs:16:"00":16:"00":16:"":0
+
+Test mbedtls_mpi_sub_abs: 1 - 0 (null)
+mbedtls_mpi_sub_abs:16:"01":16:"":16:"01":0
+
+Test mbedtls_mpi_sub_abs: 0 (null) - 1
+mbedtls_mpi_sub_abs:16:"":16:"01":16:"":MBEDTLS_ERR_MPI_NEGATIVE_VALUE
+
 Test mbedtls_mpi_sub_abs #1
 mbedtls_mpi_sub_abs:16:"FFFFFFFFFF":16:"01":16:"FFFFFFFFFE":0
 
@@ -568,6 +862,27 @@
 Base test mbedtls_mpi_sub_mpi #4 (Test with negative subtraction)
 mbedtls_mpi_sub_mpi:10:"5":10:"-7":10:"12"
 
+Test mbedtls_mpi_sub_mpi: 0 (null) - 0 (null)
+mbedtls_mpi_sub_mpi:16:"":16:"":16:"0"
+
+Test mbedtls_mpi_sub_mpi: 0 (null) - 0 (1 limb)
+mbedtls_mpi_sub_mpi:16:"":16:"00":16:"0"
+
+Test mbedtls_mpi_sub_mpi: 0 (null) - 1
+mbedtls_mpi_sub_mpi:16:"":16:"1":16:"-1"
+
+Test mbedtls_mpi_sub_mpi: 0 (null) - -1
+mbedtls_mpi_sub_mpi:16:"":16:"-1":16:"1"
+
+Test mbedtls_mpi_sub_mpi: 0 (1 limb) - 0 (null)
+mbedtls_mpi_sub_mpi:16:"00":16:"":16:"0"
+
+Test mbedtls_mpi_sub_mpi: 1 - 0 (null)
+mbedtls_mpi_sub_mpi:16:"1":16:"":16:"1"
+
+Test mbedtls_mpi_sub_mpi: -1 - 0 (null)
+mbedtls_mpi_sub_mpi:16:"-1":16:"":16:"-1"
+
 Test mbedtls_mpi_sub_mpi #1
 mbedtls_mpi_sub_mpi:10:"531872289054204184185084734375133399408303613982130856645299464930952178606045848877129147820387996428175564228204785846141207532462936339834139412401975338705794646595487324365194792822189473092273993580587964571659678084484152603881094176995594813302284232006001752128168901293560051833646881436219":10:"203956878356401977405765866929034577280193993314348263094772646453283062722701277632936616063144088173312372882677123879538709400158306567338328279154499698366071906766440037074217117805690872792848149112022286332144876183376326512083574821647933992961249917319836219304274280243803104015000563790123":10:"327915410697802206779318867446098822128109620667782593550526818477669115883344571244192531757243908254863191345527661966602498132304629772495811133247475640339722739829047287290977675016498600299425844468565678239514801901107826091797519355347660820341034314686165532823894621049756947818646317646096"
 
@@ -580,12 +895,30 @@
 Test mbedtls_mpi_sub_int #2
 mbedtls_mpi_sub_int:10:"2039568783564019774057658669290345772801939933143482630947726464532830627227012776329":9871232:10:"2039568783564019774057658669290345772801939933143482630947726464532830627227002905097"
 
+Test mbedtls_mpi_sub_int: 0 (null) - 0
+mbedtls_mpi_sub_int:16:"":0:16:"0"
+
+Test mbedtls_mpi_sub_int: 0 (null) - 1
+mbedtls_mpi_sub_int:16:"":1:16:"-1"
+
+Test mbedtls_mpi_sub_int: 0 (null) - -1
+mbedtls_mpi_sub_int:16:"":-1:16:"1"
+
 Test mbedtls_mpi_shift_l #1
 mbedtls_mpi_shift_l:10:"64":1:10:"128"
 
 Test mbedtls_mpi_shift_l #2
 mbedtls_mpi_shift_l:10:"658385546911733550164516088405238961461880256029834598831972039469421755117818013653494814438931957316403111689187691446941406788869098983929874080332195117465344344350008880118042764943201875870917468833709791733282363323948005998269792207":37:10:"90487820548639020691922304619723076305400961610119884872723190678642804168382367856686134531865643066983017249846286450251272364365605022750900439437595355052945035915579216557330505438734955340526145476988250171181404966718289259743378883640981192704"
 
+Test mbedtls_mpi_shift_l: 0 (null) <<= 0
+mbedtls_mpi_shift_l:16:"":0:16:"0"
+
+Test mbedtls_mpi_shift_l: 0 (null) <<= 1
+mbedtls_mpi_shift_l:16:"":1:16:"0"
+
+Test mbedtls_mpi_shift_l: 0 (null) <<= 64
+mbedtls_mpi_shift_l:16:"":64:16:"0"
+
 Test mbedtls_mpi_shift_r #1
 mbedtls_mpi_shift_r:10:"128":1:10:"64"
 
@@ -604,6 +937,15 @@
 Test mbedtls_mpi_shift_r #7
 mbedtls_mpi_shift_r:16:"FFFFFFFFFFFFFFFF":128:16:"00"
 
+Test mbedtls_mpi_shift_r: 0 (null) >>= 0
+mbedtls_mpi_shift_r:16:"":0:16:"0"
+
+Test mbedtls_mpi_shift_r: 0 (null) >>= 1
+mbedtls_mpi_shift_r:16:"":1:16:"0"
+
+Test mbedtls_mpi_shift_r: 0 (null) >>= 64
+mbedtls_mpi_shift_r:16:"":64:16:"0"
+
 Base test mbedtls_mpi_mul_mpi #1
 mbedtls_mpi_mul_mpi:10:"5":10:"7":10:"35"
 
@@ -616,8 +958,131 @@
 Base test mbedtls_mpi_mul_mpi #4
 mbedtls_mpi_mul_mpi:10:"-5":10:"-7":10:"35"
 
+Test mbedtls_mpi_mul_mpi: 0 (null) * 0 (null)
+mbedtls_mpi_mul_mpi:16:"":16:"":16:"0"
+
+Test mbedtls_mpi_mul_mpi: 0 (null) * 0 (1 limb)
+mbedtls_mpi_mul_mpi:16:"":16:"00":16:"0"
+
+Test mbedtls_mpi_mul_mpi: 0 (null) * 1
+mbedtls_mpi_mul_mpi:16:"":16:"01":16:"0"
+
+Test mbedtls_mpi_mul_mpi: 0 (null) * -1
+mbedtls_mpi_mul_mpi:16:"":16:"-01":16:"0"
+
+Test mbedtls_mpi_mul_mpi: 0 (1 limb) * -1
+mbedtls_mpi_mul_mpi:16:"00":16:"-01":16:"0"
+
+Test mbedtls_mpi_mul_mpi: 0 (1 limb) * 0 (null)
+mbedtls_mpi_mul_mpi:16:"00":16:"":16:"0"
+
+Test mbedtls_mpi_mul_mpi: 1 * 0 (null)
+mbedtls_mpi_mul_mpi:16:"01":16:"":16:"0"
+
+Test mbedtls_mpi_mul_mpi: -1 * 0 (null)
+mbedtls_mpi_mul_mpi:16:"-01":16:"":16:"0"
+
+Test mbedtls_mpi_mul_mpi: -1 * 0 (1 limb)
+mbedtls_mpi_mul_mpi:16:"-01":16:"00":16:"0"
+
 Test mbedtls_mpi_mul_mpi #1
-mbedtls_mpi_mul_mpi:10:"28911710017320205966167820725313234361535259163045867986277478145081076845846493521348693253530011243988160148063424837895971948244167867236923919506962312185829914482993478947657472351461336729641485069323635424692930278888923450060546465883490944265147851036817433970984747733020522259537":10:"16471581891701794764704009719057349996270239948993452268812975037240586099924712715366967486587417803753916334331355573776945238871512026832810626226164346328807407669366029926221415383560814338828449642265377822759768011406757061063524768140567867350208554439342320410551341675119078050953":10:"476221599179424887669515829231223263939342135681791605842540429321038144633323941248706405375723482912535192363845116154236465184147599697841273424891410002781967962186252583311115708128167171262206919514587899883547279647025952837516324649656913580411611297312678955801899536937577476819667861053063432906071315727948826276092545739432005962781562403795455162483159362585281248265005441715080197800335757871588045959754547836825977169125866324128449699877076762316768127816074587766799018626179199776188490087103869164122906791440101822594139648973454716256383294690817576188761"
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #1, leading 0 limb in B
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"000000000000000001b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #1, leading 0 limb in B, A < 0
+mbedtls_mpi_mul_mpi:16:"-02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"000000000000000001b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"-0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #1, leading 0 limb in B, B < 0
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"-000000000000000001b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"-0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #1, leading 0 limb in B, A < 0, B < 0
+mbedtls_mpi_mul_mpi:16:"-02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"-000000000000000001b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #1, leading 0 limb in A
+mbedtls_mpi_mul_mpi:16:"000000000000000002f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #1, leading 0 limb in A, A < 0
+mbedtls_mpi_mul_mpi:16:"-000000000000000002f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"-0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #1, leading 0 limb in A, B < 0
+mbedtls_mpi_mul_mpi:16:"000000000000000002f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"-01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"-0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #1, leading 0 limb in A, A < 0, B < 0
+mbedtls_mpi_mul_mpi:16:"-000000000000000002f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"-01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #1, leading 0 limb in A and B
+mbedtls_mpi_mul_mpi:16:"000000000000000002f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"000000000000000001b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #1, leading 0 limb in A and B, A < 0
+mbedtls_mpi_mul_mpi:16:"-000000000000000002f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"000000000000000001b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"-0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #1, leading 0 limb in A and B, B < 0
+mbedtls_mpi_mul_mpi:16:"000000000000000002f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"-000000000000000001b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"-0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #1, leading 0 limb in A and B, A < 0, B < 0
+mbedtls_mpi_mul_mpi:16:"-000000000000000002f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"-000000000000000001b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb59"
+
+Test mbedtls_mpi_mul_mpi #2, trailing 0 limb in A
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf24510000000000000000":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb590000000000000000"
+
+Test mbedtls_mpi_mul_mpi #2, trailing 0 limb in A, A < 0
+mbedtls_mpi_mul_mpi:16:"-02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf24510000000000000000":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"-0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb590000000000000000"
+
+Test mbedtls_mpi_mul_mpi #2, trailing 0 limb in A, B < 0
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf24510000000000000000":16:"-01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"-0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb590000000000000000"
+
+Test mbedtls_mpi_mul_mpi #2, trailing 0 limb in A, A < 0, B < 0
+mbedtls_mpi_mul_mpi:16:"-02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf24510000000000000000":16:"-01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb590000000000000000"
+
+Test mbedtls_mpi_mul_mpi #2, trailing 0 limb in B
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c890000000000000000":16:"0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb590000000000000000"
+
+Test mbedtls_mpi_mul_mpi #2, trailing 0 limb in B, A < 0
+mbedtls_mpi_mul_mpi:16:"-02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c890000000000000000":16:"-0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb590000000000000000"
+
+Test mbedtls_mpi_mul_mpi #2, trailing 0 limb in B, B < 0
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"-01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c890000000000000000":16:"-0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb590000000000000000"
+
+Test mbedtls_mpi_mul_mpi #2, trailing 0 limb in B, A < 0, B < 0
+mbedtls_mpi_mul_mpi:16:"-02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"-01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c890000000000000000":16:"0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb590000000000000000"
+
+Test mbedtls_mpi_mul_mpi #2, trailing 0 limb in A and B
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf24510000000000000000":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c890000000000000000":16:"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"
+
+Test mbedtls_mpi_mul_mpi #2, trailing 0 limb in A and B, A < 0
+mbedtls_mpi_mul_mpi:16:"-02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf24510000000000000000":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c890000000000000000":16:"-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"
+
+Test mbedtls_mpi_mul_mpi #2, trailing 0 limb in A and B, B < 0
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf24510000000000000000":16:"-01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c890000000000000000":16:"-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"
+
+Test mbedtls_mpi_mul_mpi #2, trailing 0 limb in A and B, A < 0, B < 0
+mbedtls_mpi_mul_mpi:16:"-02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf24510000000000000000":16:"-01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c890000000000000000":16:"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"
+
+Test mbedtls_mpi_mul_mpi #3, trailing 0 limbs in A
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf245100000000000000000000000000000000":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"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"
+
+Test mbedtls_mpi_mul_mpi #3, trailing 0 limbs in A, A < 0
+mbedtls_mpi_mul_mpi:16:"-02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf245100000000000000000000000000000000":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"-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"
+
+Test mbedtls_mpi_mul_mpi #3, trailing 0 limbs in A, B < 0
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf245100000000000000000000000000000000":16:"-01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"-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"
+
+Test mbedtls_mpi_mul_mpi #3, trailing 0 limbs in A, A < 0, B < 0
+mbedtls_mpi_mul_mpi:16:"-02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf245100000000000000000000000000000000":16:"-01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c89":16:"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"
+
+Test mbedtls_mpi_mul_mpi #3, trailing 0 limbs in B
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c8900000000000000000000000000000000":16:"0503ae899d35ae5b7706b067aed7cb2952da37a5d4ad58f05f69abe14e8aaae88eab2baed858177cb4595c0edc92e5ac13c2bba2bfa23276dd023e9e52f547d4c9edb138d86aad329d7afb01e15eab7281e181cb249fc91bf09d621d86561301edda156f80e3bbff853a312852fe9e3d0541cb86801390aff1dc3c05bcb592c266f625b70e419b4c7e7e85399bb06c0e50b099b4292f9eaff4d869681faa1f745b5fcb3349ed93c572739a31dcf76b43370cf9f86cc54e982dfac9467bde915c697e60554e0d698be6bb2dd1f8bc64659f6baee7641b51f4b5ed7010c04600fcd382db84a93fe3d4d86e86a459c6cebb5900000000000000000000000000000000"
+
+Test mbedtls_mpi_mul_mpi #3, trailing 0 limbs in B, A < 0
+mbedtls_mpi_mul_mpi:16:"-02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c8900000000000000000000000000000000":16:"-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"
+
+Test mbedtls_mpi_mul_mpi #3, trailing 0 limbs in B, B < 0
+mbedtls_mpi_mul_mpi:16:"02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"-01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c8900000000000000000000000000000000":16:"-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"
+
+Test mbedtls_mpi_mul_mpi #3, trailing 0 limbs in B, A < 0, B < 0
+mbedtls_mpi_mul_mpi:16:"-02f77b94b179d4a51360f04fa56e2c0784ce3b8a742280b016904896a5605fbe9e0f0683f82c439d979ab14e11b34e05ae96232b18fb2e0d1319f4942732d7eadf92ae90cb8c68ec8ece154d334f553564b6f6db185b33b8d3635598c3d128acde8bbb7b13697e48d1a542e5f9168d2d83a8dd05ae1eaf2451":16:"-01b0b14c432710cde936e3fc100515e95dca61e10b8a68d9632bfa0546a9731a1ce6bebc6cb5fe6f5fd7e57b25f737f6a0ce5402e216b8b81c06f0c5ccce447d7f5631d14bff9dfa16f7cc72c56c84b636d00a5f35199d17ee9bf3f8746f44374ffd4ae22cf84089f04a9f7f356d6dc9f8cf8ef208a9b88c8900000000000000000000000000000000":16:"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"
 
 Test mbedtls_mpi_mul_int #1
 mbedtls_mpi_mul_int:10:"2039568783564019774057658669290345772801939933143482630947726464532830627227012776329":9871232:10:"20133056642518226042310730101376278483547239130123806338055387803943342738063359782107667328":"=="
@@ -631,15 +1096,45 @@
 Test mbedtls_mpi_mul_int #4 (Unsigned, thus failure)
 mbedtls_mpi_mul_int:10:"-2039568783564019774057658669290345772801939933143482630947726464532830627227012776329":-9871232:10:"20133056642518226042310730101376278483547239130123806338055387803943342738063359782107667328":"!="
 
+Test mbedtls_mpi_mul_int: 0 (null) * 0
+mbedtls_mpi_mul_int:16:"":0:16:"":"=="
+
+Test mbedtls_mpi_mul_int: 0 (null) * 1
+mbedtls_mpi_mul_int:16:"":1:16:"":"=="
+
+Test mbedtls_mpi_mul_int: 0 (null) * 0x1234
+mbedtls_mpi_mul_int:16:"":0x1234:16:"":"=="
+
 Base test mbedtls_mpi_div_mpi #1
 mbedtls_mpi_div_mpi:10:"1000":10:"13":10:"76":10:"12":0
 
-Base test mbedtls_mpi_div_mpi #2 (Divide by zero)
+Base test mbedtls_mpi_div_mpi #2 (Divide by zero (1 limb))
 mbedtls_mpi_div_mpi:10:"1000":10:"0":10:"1":10:"1":MBEDTLS_ERR_MPI_DIVISION_BY_ZERO
 
+Base test mbedtls_mpi_div_mpi #2 (Divide by zero (null))
+mbedtls_mpi_div_mpi:10:"1000":10:"":10:"1":10:"1":MBEDTLS_ERR_MPI_DIVISION_BY_ZERO
+
 Base test mbedtls_mpi_div_mpi #3
 mbedtls_mpi_div_mpi:10:"1000":10:"-13":10:"-76":10:"12":0
 
+Test mbedtls_mpi_div_mpi: 0 (null) / 0 (null)
+mbedtls_mpi_div_mpi:16:"":16:"":16:"":16:"":MBEDTLS_ERR_MPI_DIVISION_BY_ZERO
+
+Test mbedtls_mpi_div_mpi: 0 (null) / 0 (1 limb)
+mbedtls_mpi_div_mpi:16:"":16:"0":16:"":16:"":MBEDTLS_ERR_MPI_DIVISION_BY_ZERO
+
+Test mbedtls_mpi_div_mpi: 0 (1 limb) / 0 (null)
+mbedtls_mpi_div_mpi:16:"0":16:"":16:"":16:"":MBEDTLS_ERR_MPI_DIVISION_BY_ZERO
+
+Test mbedtls_mpi_div_mpi: 0 (1 limb) / 0 (1 limb)
+mbedtls_mpi_div_mpi:16:"0":16:"0":16:"":16:"":MBEDTLS_ERR_MPI_DIVISION_BY_ZERO
+
+Test mbedtls_mpi_div_mpi: 0 (null) / 1
+mbedtls_mpi_div_mpi:16:"":16:"1":16:"":16:"":0
+
+Test mbedtls_mpi_div_mpi: 0 (null) / -1
+mbedtls_mpi_div_mpi:16:"":16:"-1":16:"":16:"":0
+
 Test mbedtls_mpi_div_mpi #1
 mbedtls_mpi_div_mpi:10:"20133056642518226042310730101376278483547239130123806338055387803943342738063359782107667328":10:"34":10:"592148724779947824773845002981655249516095268533053127589864347174804198178334111238460803":10:"26":0
 
@@ -667,10 +1162,22 @@
 Test mbedtls_mpi_div_int #2
 mbedtls_mpi_div_int:10:"20133056642518226042310730101376278483547239130123806338055387803943342738063359782107667328":-34:10:"-592148724779947824773845002981655249516095268533053127589864347174804198178334111238460803":10:"26":0
 
+Test mbedtls_mpi_div_int: 0 (null) / 0
+mbedtls_mpi_div_int:16:"":0:16:"":16:"":MBEDTLS_ERR_MPI_DIVISION_BY_ZERO
+
+Test mbedtls_mpi_div_int: 0 (1 limb) / 0
+mbedtls_mpi_div_int:16:"00":0:16:"":16:"":MBEDTLS_ERR_MPI_DIVISION_BY_ZERO
+
+Test mbedtls_mpi_div_int: 0 (null) / 1
+mbedtls_mpi_div_int:16:"":1:16:"":16:"":0
+
 Base test mbedtls_mpi_mod_mpi #1
 mbedtls_mpi_mod_mpi:10:"1000":10:"13":10:"12":0
 
-Base test mbedtls_mpi_mod_mpi #2 (Divide by zero)
+Base test mbedtls_mpi_mod_mpi #2 (Divide by zero (null))
+mbedtls_mpi_mod_mpi:10:"1000":10:"":10:"0":MBEDTLS_ERR_MPI_DIVISION_BY_ZERO
+
+Base test mbedtls_mpi_mod_mpi #2 (Divide by zero (1 limb))
 mbedtls_mpi_mod_mpi:10:"1000":10:"0":10:"0":MBEDTLS_ERR_MPI_DIVISION_BY_ZERO
 
 Base test mbedtls_mpi_mod_mpi #3
@@ -682,6 +1189,12 @@
 Base test mbedtls_mpi_mod_mpi #5 (Negative modulo)
 mbedtls_mpi_mod_mpi:10:"-1000":10:"-13":10:"-12":MBEDTLS_ERR_MPI_NEGATIVE_VALUE
 
+Test mbedtls_mpi_mod_mpi: 0 (null) % 1
+mbedtls_mpi_mod_mpi:16:"":16:"1":16:"":0
+
+Test mbedtls_mpi_mod_mpi: 0 (null) % -1
+mbedtls_mpi_mod_mpi:16:"":16:"-1":16:"":MBEDTLS_ERR_MPI_NEGATIVE_VALUE
+
 Base test mbedtls_mpi_mod_int #1
 mbedtls_mpi_mod_int:10:"1000":13:12:0
 
@@ -706,23 +1219,74 @@
 Base test mbedtls_mpi_mod_int #8 (By 2)
 mbedtls_mpi_mod_int:10:"1000":2:0:0
 
+Test mbedtls_mpi_mod_int: 0 (null) % 1
+mbedtls_mpi_mod_int:16:"":1:0:0
+
+Test mbedtls_mpi_mod_int: 0 (null) % -1
+mbedtls_mpi_mod_int:16:"":-1:0:MBEDTLS_ERR_MPI_NEGATIVE_VALUE
+
 Base test mbedtls_mpi_exp_mod #1
-mbedtls_mpi_exp_mod:10:"23":10:"13":10:"29":10:"":10:"24":0
+mbedtls_mpi_exp_mod:10:"23":10:"13":10:"29":10:"24":0
 
 Base test mbedtls_mpi_exp_mod #2 (Even N)
-mbedtls_mpi_exp_mod:10:"23":10:"13":10:"30":10:"":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+mbedtls_mpi_exp_mod:10:"23":10:"13":10:"30":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+
+Base test mbedtls_mpi_exp_mod #2 (N = 0 (null))
+mbedtls_mpi_exp_mod:10:"23":10:"13":10:"":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
 Base test mbedtls_mpi_exp_mod #3 (Negative N)
-mbedtls_mpi_exp_mod:10:"23":10:"13":10:"-29":10:"":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+mbedtls_mpi_exp_mod:10:"23":10:"13":10:"-29":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
 Base test mbedtls_mpi_exp_mod #4 (Negative base)
-mbedtls_mpi_exp_mod:10:"-23":10:"13":10:"29":10:"":10:"5":0
+mbedtls_mpi_exp_mod:10:"-23":10:"13":10:"29":10:"5":0
 
 Base test mbedtls_mpi_exp_mod #5 (Negative exponent)
-mbedtls_mpi_exp_mod:10:"23":10:"-13":10:"29":10:"":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+mbedtls_mpi_exp_mod:10:"23":10:"-13":10:"29":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
 Base test mbedtls_mpi_exp_mod #6 (Negative base + exponent)
-mbedtls_mpi_exp_mod:10:"-23":10:"-13":10:"29":10:"":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+mbedtls_mpi_exp_mod:10:"-23":10:"-13":10:"29":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+
+Test mbedtls_mpi_exp_mod: 0 (null) ^ 0 (null) mod 9
+mbedtls_mpi_exp_mod:16:"":16:"":16:"09":16:"1":0
+
+Test mbedtls_mpi_exp_mod: 0 (null) ^ 0 (1 limb) mod 9
+mbedtls_mpi_exp_mod:16:"":16:"00":16:"09":16:"1":0
+
+Test mbedtls_mpi_exp_mod: 0 (null) ^ 1 mod 9
+mbedtls_mpi_exp_mod:16:"":16:"01":16:"09":16:"":0
+
+Test mbedtls_mpi_exp_mod: 0 (null) ^ 2 mod 9
+mbedtls_mpi_exp_mod:16:"":16:"02":16:"09":16:"":0
+
+Test mbedtls_mpi_exp_mod: 0 (1 limb) ^ 0 (null) mod 9
+mbedtls_mpi_exp_mod:16:"00":16:"":16:"09":16:"1":0
+
+Test mbedtls_mpi_exp_mod: 0 (1 limb) ^ 0 (1 limb) mod 9
+mbedtls_mpi_exp_mod:16:"00":16:"00":16:"09":16:"1":0
+
+Test mbedtls_mpi_exp_mod: 0 (1 limb) ^ 1 mod 9
+mbedtls_mpi_exp_mod:16:"00":16:"01":16:"09":16:"":0
+
+Test mbedtls_mpi_exp_mod: 0 (1 limb) ^ 2 mod 9
+mbedtls_mpi_exp_mod:16:"00":16:"02":16:"09":16:"":0
+
+Test mbedtls_mpi_exp_mod: 1 ^ 0 (null) mod 9
+mbedtls_mpi_exp_mod:16:"01":16:"":16:"09":16:"1":0
+
+Test mbedtls_mpi_exp_mod: 4 ^ 0 (null) mod 9
+mbedtls_mpi_exp_mod:16:"04":16:"":16:"09":16:"1":0
+
+Test mbedtls_mpi_exp_mod: 10 ^ 0 (null) mod 9
+mbedtls_mpi_exp_mod:16:"0a":16:"":16:"09":16:"1":0
+
+Test mbedtls_mpi_exp_mod: 1 ^ 0 (1 limb) mod 9
+mbedtls_mpi_exp_mod:16:"01":16:"00":16:"09":16:"1":0
+
+Test mbedtls_mpi_exp_mod: 4 ^ 0 (1 limb) mod 9
+mbedtls_mpi_exp_mod:16:"04":16:"00":16:"09":16:"1":0
+
+Test mbedtls_mpi_exp_mod: 10 ^ 0 (1 limb) mod 9
+mbedtls_mpi_exp_mod:16:"0a":16:"00":16:"09":16:"1":0
 
 Test mbedtls_mpi_exp_mod: MAX_SIZE exponent
 mbedtls_mpi_exp_mod_size:2:MBEDTLS_MPI_MAX_SIZE:10:10:"":0
@@ -744,14 +1308,14 @@
 
 Test mbedtls_mpi_exp_mod #1
 depends_on:MPI_MAX_BITS_LARGER_THAN_792
-mbedtls_mpi_exp_mod:10:"433019240910377478217373572959560109819648647016096560523769010881172869083338285573756574557395862965095016483867813043663981946477698466501451832407592327356331263124555137732393938242285782144928753919588632679050799198937132922145084847":10:"5781538327977828897150909166778407659250458379645823062042492461576758526757490910073628008613977550546382774775570888130029763571528699574717583228939535960234464230882573615930384979100379102915657483866755371559811718767760594919456971354184113721":10:"583137007797276923956891216216022144052044091311388601652961409557516421612874571554415606746479105795833145583959622117418531166391184939066520869800857530421873250114773204354963864729386957427276448683092491947566992077136553066273207777134303397724679138833126700957":10:"":10:"114597449276684355144920670007147953232659436380163461553186940113929777196018164149703566472936578890991049344459204199888254907113495794730452699842273939581048142004834330369483813876618772578869083248061616444392091693787039636316845512292127097865026290173004860736":0
+mbedtls_mpi_exp_mod:10:"433019240910377478217373572959560109819648647016096560523769010881172869083338285573756574557395862965095016483867813043663981946477698466501451832407592327356331263124555137732393938242285782144928753919588632679050799198937132922145084847":10:"5781538327977828897150909166778407659250458379645823062042492461576758526757490910073628008613977550546382774775570888130029763571528699574717583228939535960234464230882573615930384979100379102915657483866755371559811718767760594919456971354184113721":10:"583137007797276923956891216216022144052044091311388601652961409557516421612874571554415606746479105795833145583959622117418531166391184939066520869800857530421873250114773204354963864729386957427276448683092491947566992077136553066273207777134303397724679138833126700957":10:"114597449276684355144920670007147953232659436380163461553186940113929777196018164149703566472936578890991049344459204199888254907113495794730452699842273939581048142004834330369483813876618772578869083248061616444392091693787039636316845512292127097865026290173004860736":0
 
 Test mbedtls_mpi_exp_mod (Negative base) [#1]
-mbedtls_mpi_exp_mod:10:"-10000000000":10:"10000000000":10:"99999":10:"":10:"1":0
+mbedtls_mpi_exp_mod:10:"-10000000000":10:"10000000000":10:"99999":10:"1":0
 
 Test mbedtls_mpi_exp_mod (Negative base) [#2]
 depends_on:MPI_MAX_BITS_LARGER_THAN_792
-mbedtls_mpi_exp_mod:16:"-9f13012cd92aa72fb86ac8879d2fde4f7fd661aaae43a00971f081cc60ca277059d5c37e89652e2af2585d281d66ef6a9d38a117e9608e9e7574cd142dc55278838a2161dd56db9470d4c1da2d5df15a908ee2eb886aaa890f23be16de59386663a12f1afbb325431a3e835e3fd89b98b96a6f77382f458ef9a37e1f84a03045c8676ab55291a94c2228ea15448ee96b626b998":16:"40a54d1b9e86789f06d9607fb158672d64867665c73ee9abb545fc7a785634b354c7bae5b962ce8040cf45f2c1f3d3659b2ee5ede17534c8fc2ec85c815e8df1fe7048d12c90ee31b88a68a081f17f0d8ce5f4030521e9400083bcea73a429031d4ca7949c2000d597088e0c39a6014d8bf962b73bb2e8083bd0390a4e00b9b3":16:"eeaf0ab9adb38dd69c33f80afa8fc5e86072618775ff3c0b9ea2314c9c256576d674df7496ea81d3383b4813d692c6e0e0d5d8e250b98be48e495c1d6089dad15dc7d7b46154d6b6ce8ef4ad69b15d4982559b297bcf1885c529f566660e57ec68edbc3c05726cc02fd4cbf4976eaa9afd5138fe8376435b9fc61d2fc0eb06e3":16:"":16:"21acc7199e1b90f9b4844ffe12c19f00ec548c5d32b21c647d48b6015d8eb9ec9db05b4f3d44db4227a2b5659c1a7cceb9d5fa8fa60376047953ce7397d90aaeb7465e14e820734f84aa52ad0fc66701bcbb991d57715806a11531268e1e83dd48288c72b424a6287e9ce4e5cc4db0dd67614aecc23b0124a5776d36e5c89483":0
+mbedtls_mpi_exp_mod:16:"-9f13012cd92aa72fb86ac8879d2fde4f7fd661aaae43a00971f081cc60ca277059d5c37e89652e2af2585d281d66ef6a9d38a117e9608e9e7574cd142dc55278838a2161dd56db9470d4c1da2d5df15a908ee2eb886aaa890f23be16de59386663a12f1afbb325431a3e835e3fd89b98b96a6f77382f458ef9a37e1f84a03045c8676ab55291a94c2228ea15448ee96b626b998":16:"40a54d1b9e86789f06d9607fb158672d64867665c73ee9abb545fc7a785634b354c7bae5b962ce8040cf45f2c1f3d3659b2ee5ede17534c8fc2ec85c815e8df1fe7048d12c90ee31b88a68a081f17f0d8ce5f4030521e9400083bcea73a429031d4ca7949c2000d597088e0c39a6014d8bf962b73bb2e8083bd0390a4e00b9b3":16:"eeaf0ab9adb38dd69c33f80afa8fc5e86072618775ff3c0b9ea2314c9c256576d674df7496ea81d3383b4813d692c6e0e0d5d8e250b98be48e495c1d6089dad15dc7d7b46154d6b6ce8ef4ad69b15d4982559b297bcf1885c529f566660e57ec68edbc3c05726cc02fd4cbf4976eaa9afd5138fe8376435b9fc61d2fc0eb06e3":16:"21acc7199e1b90f9b4844ffe12c19f00ec548c5d32b21c647d48b6015d8eb9ec9db05b4f3d44db4227a2b5659c1a7cceb9d5fa8fa60376047953ce7397d90aaeb7465e14e820734f84aa52ad0fc66701bcbb991d57715806a11531268e1e83dd48288c72b424a6287e9ce4e5cc4db0dd67614aecc23b0124a5776d36e5c89483":0
 
 Base test GCD #1
 mbedtls_mpi_gcd:10:"693":10:"609":10:"21"
@@ -762,24 +1326,105 @@
 Base test GCD #3
 mbedtls_mpi_gcd:10:"768454923":10:"542167814":10:"1"
 
-Test GCD #1
+Test GCD: 0 (null), 0 (null)
+mbedtls_mpi_gcd:16:"":16:"":16:"0"
+
+Test GCD: 0 (null), 0 (1 limb)
+mbedtls_mpi_gcd:16:"":16:"00":16:"0"
+
+Test GCD: 0 (null), 3
+mbedtls_mpi_gcd:16:"":16:"03":16:"3"
+
+Test GCD: 0 (null), 6
+mbedtls_mpi_gcd:16:"":16:"06":16:"6"
+
+Test GCD: 0 (1 limb), 0 (null)
+mbedtls_mpi_gcd:16:"00":16:"":16:"0"
+
+Test GCD: 0 (1 limb), 3
+mbedtls_mpi_gcd:16:"00":16:"03":16:"3"
+
+Test GCD: 0 (1 limb), 6
+mbedtls_mpi_gcd:16:"00":16:"06":16:"6"
+
+Test GCD: 3, 0 (null)
+mbedtls_mpi_gcd:16:"03":16:"":16:"3"
+
+Test GCD: 3, 0 (1 limb)
+mbedtls_mpi_gcd:16:"03":16:"00":16:"3"
+
+Test GCD: 6, 0 (null)
+mbedtls_mpi_gcd:16:"06":16:"":16:"6"
+
+Test GCD: 6, 0 (1 limb)
+mbedtls_mpi_gcd:16:"06":16:"00":16:"6"
+
+Test GCD: gcd=1, 0 < A < B
 mbedtls_mpi_gcd:10:"433019240910377478217373572959560109819648647016096560523769010881172869083338285573756574557395862965095016483867813043663981946477698466501451832407592327356331263124555137732393938242285782144928753919588632679050799198937132922145084847":10:"5781538327977828897150909166778407659250458379645823062042492461576758526757490910073628008613977550546382774775570888130029763571528699574717583228939535960234464230882573615930384979100379102915657483866755371559811718767760594919456971354184113721":10:"1"
 
+Test GCD: gcd=1, 0 < B < A
+mbedtls_mpi_gcd:10:"5781538327977828897150909166778407659250458379645823062042492461576758526757490910073628008613977550546382774775570888130029763571528699574717583228939535960234464230882573615930384979100379102915657483866755371559811718767760594919456971354184113721":10:"433019240910377478217373572959560109819648647016096560523769010881172869083338285573756574557395862965095016483867813043663981946477698466501451832407592327356331263124555137732393938242285782144928753919588632679050799198937132922145084847":10:"1"
+
+Test GCD: gcd=1, A > 0, B < 0
+mbedtls_mpi_gcd:10:"433019240910377478217373572959560109819648647016096560523769010881172869083338285573756574557395862965095016483867813043663981946477698466501451832407592327356331263124555137732393938242285782144928753919588632679050799198937132922145084847":10:"-5781538327977828897150909166778407659250458379645823062042492461576758526757490910073628008613977550546382774775570888130029763571528699574717583228939535960234464230882573615930384979100379102915657483866755371559811718767760594919456971354184113721":10:"1"
+
+Test GCD: gcd=1, A < 0 < B, |A| < |B|
+mbedtls_mpi_gcd:10:"-433019240910377478217373572959560109819648647016096560523769010881172869083338285573756574557395862965095016483867813043663981946477698466501451832407592327356331263124555137732393938242285782144928753919588632679050799198937132922145084847":10:"5781538327977828897150909166778407659250458379645823062042492461576758526757490910073628008613977550546382774775570888130029763571528699574717583228939535960234464230882573615930384979100379102915657483866755371559811718767760594919456971354184113721":10:"1"
+
+Test GCD: gcd=1, B < A < 0
+mbedtls_mpi_gcd:10:"-433019240910377478217373572959560109819648647016096560523769010881172869083338285573756574557395862965095016483867813043663981946477698466501451832407592327356331263124555137732393938242285782144928753919588632679050799198937132922145084847":10:"-5781538327977828897150909166778407659250458379645823062042492461576758526757490910073628008613977550546382774775570888130029763571528699574717583228939535960234464230882573615930384979100379102915657483866755371559811718767760594919456971354184113721":10:"1"
+
+Test GCD: gcd=2, 0 < A < B
+mbedtls_mpi_gcd:10:"866038481820754956434747145919120219639297294032193121047538021762345738166676571147513149114791725930190032967735626087327963892955396933002903664815184654712662526249110275464787876484571564289857507839177265358101598397874265844290169694":10:"11563076655955657794301818333556815318500916759291646124084984923153517053514981820147256017227955101092765549551141776260059527143057399149435166457879071920468928461765147231860769958200758205831314967733510743119623437535521189838913942708368227442":10:"2"
+
+Test GCD: gcd=2, 0 < B < A
+mbedtls_mpi_gcd:10:"11563076655955657794301818333556815318500916759291646124084984923153517053514981820147256017227955101092765549551141776260059527143057399149435166457879071920468928461765147231860769958200758205831314967733510743119623437535521189838913942708368227442":10:"866038481820754956434747145919120219639297294032193121047538021762345738166676571147513149114791725930190032967735626087327963892955396933002903664815184654712662526249110275464787876484571564289857507839177265358101598397874265844290169694":10:"2"
+
+Test GCD: gcd=3, 0 < A < B
+mbedtls_mpi_gcd:10:"1299057722731132434652120718878680329458945941048289681571307032643518607250014856721269723672187588895285049451603439130991945839433095399504355497222776982068993789373665413197181814726857346434786261758765898037152397596811398766435254541":10:"17344614983933486691452727500335222977751375138937469186127477384730275580272472730220884025841932651639148324326712664390089290714586098724152749686818607880703392692647720847791154937301137308746972451600266114679435156303281784758370914062552341163":10:"3"
+
+Test GCD: gcd=3, 0 < B < A
+mbedtls_mpi_gcd:10:"17344614983933486691452727500335222977751375138937469186127477384730275580272472730220884025841932651639148324326712664390089290714586098724152749686818607880703392692647720847791154937301137308746972451600266114679435156303281784758370914062552341163":10:"1299057722731132434652120718878680329458945941048289681571307032643518607250014856721269723672187588895285049451603439130991945839433095399504355497222776982068993789373665413197181814726857346434786261758765898037152397596811398766435254541":10:"3"
+
+Test GCD: gcd=4, 0 < A < B
+mbedtls_mpi_gcd:10:"1732076963641509912869494291838240439278594588064386242095076043524691476333353142295026298229583451860380065935471252174655927785910793866005807329630369309425325052498220550929575752969143128579715015678354530716203196795748531688580339388":10:"23126153311911315588603636667113630637001833518583292248169969846307034107029963640294512034455910202185531099102283552520119054286114798298870332915758143840937856923530294463721539916401516411662629935467021486239246875071042379677827885416736454884":10:"4"
+
+Test GCD: gcd=4, 0 < B < A
+mbedtls_mpi_gcd:10:"23126153311911315588603636667113630637001833518583292248169969846307034107029963640294512034455910202185531099102283552520119054286114798298870332915758143840937856923530294463721539916401516411662629935467021486239246875071042379677827885416736454884":10:"1732076963641509912869494291838240439278594588064386242095076043524691476333353142295026298229583451860380065935471252174655927785910793866005807329630369309425325052498220550929575752969143128579715015678354530716203196795748531688580339388":10:"4"
+
+Test GCD: gcd=6, 0 < A < B
+mbedtls_mpi_gcd:10:"2598115445462264869304241437757360658917891882096579363142614065287037214500029713442539447344375177790570098903206878261983891678866190799008710994445553964137987578747330826394363629453714692869572523517531796074304795193622797532870509082":10:"34689229967866973382905455000670445955502750277874938372254954769460551160544945460441768051683865303278296648653425328780178581429172197448305499373637215761406785385295441695582309874602274617493944903200532229358870312606563569516741828125104682326":10:"6"
+
+Test GCD: gcd=6, 0 < B < A
+mbedtls_mpi_gcd:10:"34689229967866973382905455000670445955502750277874938372254954769460551160544945460441768051683865303278296648653425328780178581429172197448305499373637215761406785385295441695582309874602274617493944903200532229358870312606563569516741828125104682326":10:"2598115445462264869304241437757360658917891882096579363142614065287037214500029713442539447344375177790570098903206878261983891678866190799008710994445553964137987578747330826394363629453714692869572523517531796074304795193622797532870509082":10:"6"
+
+Test GCD: 0 < A = B
+mbedtls_mpi_gcd:10:"433019240910377478217373572959560109819648647016096560523769010881172869083338285573756574557395862965095016483867813043663981946477698466501451832407592327356331263124555137732393938242285782144928753919588632679050799198937132922145084847":10:"433019240910377478217373572959560109819648647016096560523769010881172869083338285573756574557395862965095016483867813043663981946477698466501451832407592327356331263124555137732393938242285782144928753919588632679050799198937132922145084847":10:"433019240910377478217373572959560109819648647016096560523769010881172869083338285573756574557395862965095016483867813043663981946477698466501451832407592327356331263124555137732393938242285782144928753919588632679050799198937132922145084847"
+
 Base test mbedtls_mpi_inv_mod #1
 mbedtls_mpi_inv_mod:10:"3":10:"11":10:"4":0
 
-Base test mbedtls_mpi_inv_mod #2
+Test mbedtls_mpi_inv_mod: mod 0 (null)
+mbedtls_mpi_inv_mod:10:"3":10:"":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+
+Test mbedtls_mpi_inv_mod: mod 0 (1 limb)
 mbedtls_mpi_inv_mod:10:"3":10:"0":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
-Base test mbedtls_mpi_inv_mod #3
+Test mbedtls_mpi_inv_mod: mod negative
 mbedtls_mpi_inv_mod:10:"3":10:"-11":10:"4":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
-Base test mbedtls_mpi_inv_mod #4
+Test mbedtls_mpi_inv_mod: 2^-1 mod 4
 mbedtls_mpi_inv_mod:10:"2":10:"4":10:"0":MBEDTLS_ERR_MPI_NOT_ACCEPTABLE
 
-Base test mbedtls_mpi_inv_mod #5
+Test mbedtls_mpi_inv_mod: mod 1
 mbedtls_mpi_inv_mod:10:"3":10:"1":10:"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
+Test mbedtls_mpi_inv_mod: 0 (null) ^-1
+mbedtls_mpi_inv_mod:16:"":16:"11":16:"":MBEDTLS_ERR_MPI_NOT_ACCEPTABLE
+
+Test mbedtls_mpi_inv_mod: 0 (1 limb) ^-1
+mbedtls_mpi_inv_mod:16:"00":16:"11":16:"":MBEDTLS_ERR_MPI_NOT_ACCEPTABLE
+
 Test mbedtls_mpi_inv_mod #1
 mbedtls_mpi_inv_mod:16:"aa4df5cb14b4c31237f98bd1faf527c283c2d0f3eec89718664ba33f9762907c":16:"fffbbd660b94412ae61ead9c2906a344116e316a256fd387874c6c675b1d587d":16:"8d6a5c1d7adeae3e94b9bcd2c47e0d46e778bc8804a2cc25c02d775dc3d05b0c":0
 
@@ -964,6 +1609,9 @@
 Test bit getting (Larger and non-existing limb)
 mbedtls_mpi_get_bit:10:"49979687":500:0
 
+Test bit getting in 0 (null)
+mbedtls_mpi_get_bit:10:"":500:0
+
 Test bit getting (Value bit 24)
 mbedtls_mpi_get_bit:10:"49979687":24:0
 
@@ -982,6 +1630,12 @@
 Test bit set (Add above existing limbs with a 1)
 mbedtls_mpi_set_bit:10:"49979687":80:1:10:"1208925819614629224685863":0
 
+Test bit set (Add to 0 (null) with a 0)
+mbedtls_mpi_set_bit:16:"":65:0:16:"":0
+
+Test bit set (Add to 0 (null) with a 1)
+mbedtls_mpi_set_bit:16:"":65:1:16:"020000000000000000":0
+
 Test bit set (Bit index larger than 31 with a 0)
 mbedtls_mpi_set_bit:16:"FFFFFFFFFFFFFFFF":32:0:16:"FFFFFFFEFFFFFFFF":0
 
@@ -992,46 +1646,246 @@
 mbedtls_mpi_set_bit:16:"00":5:2:16:"00":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
 Fill random: 0 bytes
-mpi_fill_random:0:0:0
+mpi_fill_random:0:0:0:0
 
 Fill random: 1 byte, good
-mpi_fill_random:1:1:0
+mpi_fill_random:1:1:0:0
 
 Fill random: 2 bytes, good, no leading zero
-mpi_fill_random:2:2:0
+mpi_fill_random:2:2:0:0
 
 Fill random: 2 bytes, good, 1 leading zero
-mpi_fill_random:2:256:0
+mpi_fill_random:2:256:0:0
 
 Fill random: MAX_SIZE - 7, good
-mpi_fill_random:MBEDTLS_MPI_MAX_SIZE - 7:MBEDTLS_MPI_MAX_SIZE - 7:0
+mpi_fill_random:MBEDTLS_MPI_MAX_SIZE - 7:MBEDTLS_MPI_MAX_SIZE - 7:0:0
 
 Fill random: MAX_SIZE, good
-mpi_fill_random:MBEDTLS_MPI_MAX_SIZE:MBEDTLS_MPI_MAX_SIZE:0
+mpi_fill_random:MBEDTLS_MPI_MAX_SIZE:MBEDTLS_MPI_MAX_SIZE:0:0
+
+Fill random: 0 bytes, previously small >0
+mpi_fill_random:0:0:1:0
+
+Fill random: 0 bytes, previously small <0
+mpi_fill_random:0:0:-1:0
+
+Fill random: 0 bytes, previously large >0
+mpi_fill_random:0:0:65:0
+
+Fill random: 0 bytes, previously large <0
+mpi_fill_random:0:0:-65:0
+
+Fill random: 1 byte, previously small >0
+mpi_fill_random:1:1:1:0
+
+Fill random: 1 byte, previously small <0
+mpi_fill_random:1:1:-1:0
+
+Fill random: 1 byte, previously large >0
+mpi_fill_random:1:1:65:0
+
+Fill random: 1 byte, previously large <0
+mpi_fill_random:1:1:-65:0
+
+Fill random: 9 bytes, previously small >0
+mpi_fill_random:1:1:1:0
+
+Fill random: 9 bytes, previously small <0
+mpi_fill_random:1:1:-1:0
 
 Fill random: 1 byte, RNG failure
-mpi_fill_random:1:0:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
+mpi_fill_random:1:0:0:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
 
 Fill random: 2 bytes, RNG failure after 1 byte
-mpi_fill_random:2:1:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
+mpi_fill_random:2:1:0:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
 
 Fill random: 4 bytes, RNG failure after 3 bytes
-mpi_fill_random:4:3:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
+mpi_fill_random:4:3:0:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
 
 Fill random: 8 bytes, RNG failure after 7 bytes
-mpi_fill_random:8:7:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
+mpi_fill_random:8:7:0:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
 
 Fill random: 16 bytes, RNG failure after 1 bytes
-mpi_fill_random:16:1:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
+mpi_fill_random:16:1:0:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
 
 Fill random: 16 bytes, RNG failure after 8 bytes
-mpi_fill_random:16:8:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
+mpi_fill_random:16:8:0:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
 
 Fill random: 16 bytes, RNG failure after 15 bytes
-mpi_fill_random:16:15:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
+mpi_fill_random:16:15:0:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
 
 Fill random: MAX_SIZE bytes, RNG failure after MAX_SIZE-1 bytes
-mpi_fill_random:MBEDTLS_MPI_MAX_SIZE:MBEDTLS_MPI_MAX_SIZE-1:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
+mpi_fill_random:MBEDTLS_MPI_MAX_SIZE:MBEDTLS_MPI_MAX_SIZE-1:0:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
+
+MPI random in range: 1..2
+mpi_random_many:1:"02":1000
+
+MPI random in range: 1..3
+mpi_random_many:1:"03":1000
+
+MPI random in range: 1..4
+mpi_random_many:1:"04":1000
+
+MPI random in range: 1..5
+mpi_random_many:1:"05":1000
+
+MPI random in range: 1..6
+mpi_random_many:1:"06":1000
+
+MPI random in range: 1..7
+mpi_random_many:1:"07":1000
+
+MPI random in range: 1..8
+mpi_random_many:1:"08":1000
+
+MPI random in range: 1..9
+mpi_random_many:1:"09":1000
+
+MPI random in range: 1..10
+mpi_random_many:1:"0a":1000
+
+MPI random in range: 1..11
+mpi_random_many:1:"0b":1000
+
+MPI random in range: 1..12
+mpi_random_many:1:"0c":1000
+
+MPI random in range: 1..255
+mpi_random_many:1:"ff":100
+
+MPI random in range: 1..256
+mpi_random_many:1:"0100":100
+
+MPI random in range: 1..257
+mpi_random_many:1:"0101":100
+
+MPI random in range: 1..272
+mpi_random_many:1:"0110":100
+
+MPI random in range: 1..2^64-1
+mpi_random_many:1:"ffffffffffffffff":100
+
+MPI random in range: 1..2^64
+mpi_random_many:1:"010000000000000000":100
+
+MPI random in range: 1..2^64+1
+mpi_random_many:1:"010000000000000001":100
+
+MPI random in range: 1..2^64+2^63
+mpi_random_many:1:"018000000000000000":100
+
+MPI random in range: 1..2^65-1
+mpi_random_many:1:"01ffffffffffffffff":100
+
+MPI random in range: 1..2^65
+mpi_random_many:1:"020000000000000000":100
+
+MPI random in range: 1..2^65+1
+mpi_random_many:1:"020000000000000001":100
+
+MPI random in range: 1..2^65+2^64
+mpi_random_many:1:"030000000000000000":100
+
+MPI random in range: 1..2^66+2^65
+mpi_random_many:1:"060000000000000000":100
+
+MPI random in range: 1..2^71-1
+mpi_random_many:1:"7fffffffffffffffff":100
+
+MPI random in range: 1..2^71
+mpi_random_many:1:"800000000000000000":100
+
+MPI random in range: 1..2^71+1
+mpi_random_many:1:"800000000000000001":100
+
+MPI random in range: 1..2^71+2^70
+mpi_random_many:1:"c00000000000000000":100
+
+MPI random in range: 1..2^72-1
+mpi_random_many:1:"ffffffffffffffffff":100
+
+MPI random in range: 1..2^72
+mpi_random_many:1:"01000000000000000000":100
+
+MPI random in range: 1..2^72+1
+mpi_random_many:1:"01000000000000000001":100
+
+MPI random in range: 1..2^72+2^71
+mpi_random_many:1:"01800000000000000000":100
+
+MPI random in range: 0..1
+mpi_random_many:0:"04":10000
+
+MPI random in range: 0..4
+mpi_random_many:0:"04":10000
+
+MPI random in range: 2..4
+mpi_random_many:2:"04":10000
+
+MPI random in range: 3..4
+mpi_random_many:3:"04":10000
+
+MPI random in range: smaller result
+mpi_random_sizes:1:"aaaaaaaaaaaaaaaabbbbbbbbbbbbbbbb":1:0
+
+MPI random in range: same size result (32-bit limbs)
+mpi_random_sizes:1:"aaaaaaaaaaaaaaaa":2:0
+
+MPI random in range: same size result (64-bit limbs)
+mpi_random_sizes:1:"aaaaaaaaaaaaaaaa":1:0
+
+MPI random in range: larger result
+mpi_random_sizes:1:"aaaaaaaaaaaaaaaa":3:0
+
+## The "0 limb in upper bound" tests rely on the fact that
+## mbedtls_mpi_read_binary() bases the size of the MPI on the size of
+## the input, without first checking for leading zeros. If this was
+## not the case, the tests would still pass, but would not exercise
+## the advertised behavior.
+MPI random in range: leading 0 limb in upper bound #0
+mpi_random_sizes:1:"00aaaaaaaaaaaaaaaa":0:0
+
+MPI random in range: leading 0 limb in upper bound #1
+mpi_random_sizes:1:"00aaaaaaaaaaaaaaaa":1:0
+
+MPI random in range: leading 0 limb in upper bound #2
+mpi_random_sizes:1:"00aaaaaaaaaaaaaaaa":2:0
+
+MPI random in range: leading 0 limb in upper bound #3
+mpi_random_sizes:1:"00aaaaaaaaaaaaaaaa":3:0
+
+MPI random in range: leading 0 limb in upper bound #4
+mpi_random_sizes:1:"00aaaaaaaaaaaaaaaa":4:0
+
+MPI random in range: previously small >0
+mpi_random_sizes:1:"1234567890":4:1
+
+MPI random in range: previously small <0
+mpi_random_sizes:1:"1234567890":4:-1
+
+MPI random in range: previously large >0
+mpi_random_sizes:1:"1234":4:65
+
+MPI random in range: previously large <0
+mpi_random_sizes:1:"1234":4:-65
+
+MPI random bad arguments: min < 0
+mpi_random_fail:-1:"04":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+
+MPI random bad arguments: min = N = 0
+mpi_random_fail:0:"00":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+
+MPI random bad arguments: min = N = 1
+mpi_random_fail:1:"01":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+
+MPI random bad arguments: min > N = 0
+mpi_random_fail:1:"00":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+
+MPI random bad arguments: min > N = 1
+mpi_random_fail:2:"01":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
+
+MPI random bad arguments: min > N = 1, 0 limb in upper bound
+mpi_random_fail:2:"000000000000000001":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
 MPI Selftest
 depends_on:MBEDTLS_SELF_TEST
diff --git a/tests/suites/test_suite_mpi.function b/tests/suites/test_suite_mpi.function
index c5bb5a6..360916a 100644
--- a/tests/suites/test_suite_mpi.function
+++ b/tests/suites/test_suite_mpi.function
@@ -6,6 +6,18 @@
 #define MPI_MAX_BITS_LARGER_THAN_792
 #endif
 
+/* Check the validity of the sign bit in an MPI object. Reject representations
+ * that are not supported by the rest of the library and indicate a bug when
+ * constructing the value. */
+static int sign_is_valid( const mbedtls_mpi *X )
+{
+    if( X->s != 1 && X->s != -1 )
+        return( 0 ); // invalid sign bit, e.g. 0
+    if( mbedtls_mpi_bitlen( X ) == 0 && X->s != 1 )
+        return( 0 ); // negative zero
+    return( 1 );
+}
+
 typedef struct mbedtls_test_mpi_random
 {
     data_t *data;
@@ -64,6 +76,50 @@
     return( 0 );
 }
 
+/* Test whether bytes represents (in big-endian base 256) a number b that
+ * is significantly above a power of 2. That is, b must not have a long run
+ * of unset bits after the most significant bit.
+ *
+ * Let n be the bit-size of b, i.e. the integer such that 2^n <= b < 2^{n+1}.
+ * This function returns 1 if, when drawing a number between 0 and b,
+ * the probability that this number is at least 2^n is not negligible.
+ * This probability is (b - 2^n) / b and this function checks that this
+ * number is above some threshold A. The threshold value is heuristic and
+ * based on the needs of mpi_random_many().
+ */
+static int is_significantly_above_a_power_of_2( data_t *bytes )
+{
+    const uint8_t *p = bytes->x;
+    size_t len = bytes->len;
+    unsigned x;
+
+    /* Skip leading null bytes */
+    while( len > 0 && p[0] == 0 )
+    {
+        ++p;
+        --len;
+    }
+    /* 0 is not significantly above a power of 2 */
+    if( len == 0 )
+        return( 0 );
+    /* Extract the (up to) 2 most significant bytes */
+    if( len == 1 )
+        x = p[0];
+    else
+        x = ( p[0] << 8 ) | p[1];
+
+    /* Shift the most significant bit of x to position 8 and mask it out */
+    while( ( x & 0xfe00 ) != 0 )
+        x >>= 1;
+    x &= 0x00ff;
+
+    /* At this point, x = floor((b - 2^n) / 2^(n-8)). b is significantly above
+     * a power of 2 iff x is significantly above 0 compared to 2^8.
+     * Testing x >= 2^4 amounts to picking A = 1/16 in the function
+     * description above. */
+    return( x >= 0x10 );
+}
+
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES
@@ -321,6 +377,7 @@
     TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == result_read );
     if( result_read == 0 )
     {
+        TEST_ASSERT( sign_is_valid( &X ) );
         TEST_ASSERT( mbedtls_mpi_write_string( &X, radix_A, str, output_size, &len ) == result_write );
         if( result_write == 0 )
         {
@@ -345,6 +402,7 @@
 
 
     TEST_ASSERT( mbedtls_mpi_read_binary( &X, buf->x, buf->len ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
     TEST_ASSERT( mbedtls_mpi_write_string( &X, radix_A, str, sizeof( str ), &len ) == 0 );
     TEST_ASSERT( strcmp( (char *) str, input_A ) == 0 );
 
@@ -364,6 +422,7 @@
 
 
     TEST_ASSERT( mbedtls_mpi_read_binary_le( &X, buf->x, buf->len ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
     TEST_ASSERT( mbedtls_mpi_write_string( &X, radix_A, str, sizeof( str ), &len ) == 0 );
     TEST_ASSERT( strcmp( (char *) str, input_A ) == 0 );
 
@@ -385,7 +444,7 @@
 
     mbedtls_mpi_init( &X );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
 
     buflen = mbedtls_mpi_size( &X );
     if( buflen > (size_t) output_size )
@@ -417,7 +476,7 @@
 
     mbedtls_mpi_init( &X );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
 
     buflen = mbedtls_mpi_size( &X );
     if( buflen > (size_t) output_size )
@@ -458,6 +517,7 @@
 
     if( result == 0 )
     {
+        TEST_ASSERT( sign_is_valid( &X ) );
         buflen = mbedtls_mpi_size( &X );
         TEST_ASSERT( mbedtls_mpi_write_binary( &X, buf, buflen ) == 0 );
 
@@ -481,7 +541,7 @@
 
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
 
     file_out = fopen( output_file, "w" );
     TEST_ASSERT( file_out != NULL );
@@ -507,7 +567,7 @@
 {
     mbedtls_mpi X;
     mbedtls_mpi_init( &X );
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
     TEST_ASSERT( mbedtls_mpi_get_bit( &X, pos ) == val );
 
 exit:
@@ -522,12 +582,13 @@
     mbedtls_mpi X, Y;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, radix_Y, output_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, radix_Y, output_Y ) == 0 );
     TEST_ASSERT( mbedtls_mpi_set_bit( &X, pos, val ) == result );
 
     if( result == 0 )
     {
+        TEST_ASSERT( sign_is_valid( &X ) );
         TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &Y ) == 0 );
     }
 
@@ -542,7 +603,7 @@
     mbedtls_mpi X;
     mbedtls_mpi_init( &X );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
     TEST_ASSERT( mbedtls_mpi_lsb( &X ) == (size_t) nr_bits );
 
 exit:
@@ -556,7 +617,7 @@
     mbedtls_mpi X;
     mbedtls_mpi_init( &X );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
     TEST_ASSERT( mbedtls_mpi_bitlen( &X ) == (size_t) nr_bits );
 
 exit:
@@ -571,10 +632,11 @@
     mbedtls_mpi A, X, Y, Z;
     mbedtls_mpi_init( &A ); mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &Z );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, radix_Y, input_Y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, radix_Y, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
     TEST_ASSERT( mbedtls_mpi_gcd( &Z, &X, &Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &Z ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &A ) == 0 );
 
 exit:
@@ -603,8 +665,8 @@
     mbedtls_mpi X, Y;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, radix_Y, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, radix_Y, input_Y ) == 0 );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &Y ) == input_A );
 
 exit:
@@ -622,8 +684,8 @@
     mbedtls_mpi X, Y;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, 16, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, 16, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, 16, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, 16, input_Y ) == 0 );
 
     TEST_ASSERT( mbedtls_mpi_grow( &X, size_X ) == 0 );
     TEST_ASSERT( mbedtls_mpi_grow( &Y, size_Y ) == 0 );
@@ -644,8 +706,8 @@
     mbedtls_mpi X, Y;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, radix_Y, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, radix_Y, input_Y ) == 0 );
     TEST_ASSERT( mbedtls_mpi_cmp_abs( &X, &Y ) == input_A );
 
 exit:
@@ -654,55 +716,125 @@
 /* END_CASE */
 
 /* BEGIN_CASE */
-void mbedtls_mpi_copy_sint( int input_X, int input_Y )
+void mbedtls_mpi_copy( char *src_hex, char *dst_hex )
 {
-    mbedtls_mpi X, Y;
+    mbedtls_mpi src, dst, ref;
+    mbedtls_mpi_init( &src );
+    mbedtls_mpi_init( &dst );
+    mbedtls_mpi_init( &ref );
+
+    TEST_ASSERT( mbedtls_test_read_mpi( &src, 16, src_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &ref, 16, dst_hex ) == 0 );
+
+    /* mbedtls_mpi_copy() */
+    TEST_ASSERT( mbedtls_test_read_mpi( &dst, 16, dst_hex ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_copy( &dst, &src ) == 0 );
+    TEST_ASSERT( sign_is_valid( &dst ) );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &dst, &src ) == 0 );
+
+    /* mbedtls_mpi_safe_cond_assign(), assignment done */
+    mbedtls_mpi_free( &dst );
+    TEST_ASSERT( mbedtls_test_read_mpi( &dst, 16, dst_hex ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_safe_cond_assign( &dst, &src, 1 ) == 0 );
+    TEST_ASSERT( sign_is_valid( &dst ) );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &dst, &src ) == 0 );
+
+    /* mbedtls_mpi_safe_cond_assign(), assignment not done */
+    mbedtls_mpi_free( &dst );
+    TEST_ASSERT( mbedtls_test_read_mpi( &dst, 16, dst_hex ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_safe_cond_assign( &dst, &src, 0 ) == 0 );
+    TEST_ASSERT( sign_is_valid( &dst ) );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &dst, &ref ) == 0 );
+
+exit:
+    mbedtls_mpi_free( &src );
+    mbedtls_mpi_free( &dst );
+    mbedtls_mpi_free( &ref );
+}
+/* END_CASE */
+
+/* BEGIN_CASE */
+void mpi_copy_self( char *input_X )
+{
+    mbedtls_mpi X, A;
+    mbedtls_mpi_init( &A );
+    mbedtls_mpi_init( &X );
+
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, 16, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_copy( &X, &X ) == 0 );
+
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, 16, input_X ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &A ) == 0 );
+
+exit:
+    mbedtls_mpi_free( &A );
+    mbedtls_mpi_free( &X );
+}
+/* END_CASE */
+
+/* BEGIN_CASE */
+void mbedtls_mpi_swap( char *X_hex, char *Y_hex )
+{
+    mbedtls_mpi X, Y, X0, Y0;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y );
+    mbedtls_mpi_init( &X0 ); mbedtls_mpi_init( &Y0 );
 
-    TEST_ASSERT( mbedtls_mpi_lset( &X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_lset( &Y, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X0, 16, X_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y0, 16, Y_hex ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_copy( &Y, &X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_int( &X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_int( &Y, input_X ) == 0 );
+    /* mbedtls_mpi_swap() */
+    TEST_ASSERT( mbedtls_test_read_mpi( &X,  16, X_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y,  16, Y_hex ) == 0 );
+    mbedtls_mpi_swap( &X, &Y );
+    TEST_ASSERT( sign_is_valid( &X ) );
+    TEST_ASSERT( sign_is_valid( &Y ) );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &Y0 ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Y, &X0 ) == 0 );
+
+    /* mbedtls_mpi_safe_cond_swap(), swap done */
+    mbedtls_mpi_free( &X );
+    mbedtls_mpi_free( &Y );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X,  16, X_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y,  16, Y_hex ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_safe_cond_swap( &X, &Y, 1 ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
+    TEST_ASSERT( sign_is_valid( &Y ) );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &Y0 ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Y, &X0 ) == 0 );
+
+    /* mbedtls_mpi_safe_cond_swap(), swap not done */
+    mbedtls_mpi_free( &X );
+    mbedtls_mpi_free( &Y );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X,  16, X_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y,  16, Y_hex ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_safe_cond_swap( &X, &Y, 0 ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
+    TEST_ASSERT( sign_is_valid( &Y ) );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &X0 ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Y, &Y0 ) == 0 );
 
 exit:
     mbedtls_mpi_free( &X ); mbedtls_mpi_free( &Y );
+    mbedtls_mpi_free( &X0 ); mbedtls_mpi_free( &Y0 );
 }
 /* END_CASE */
 
 /* BEGIN_CASE */
-void mbedtls_mpi_copy_binary( data_t *input_X, data_t *input_Y )
+void mpi_swap_self( char *X_hex )
 {
-    mbedtls_mpi X, Y, X0;
-    mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &X0 );
+    mbedtls_mpi X, X0;
+    mbedtls_mpi_init( &X ); mbedtls_mpi_init( &X0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_binary( &X, input_X->x, input_X->len ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_binary( &Y, input_Y->x, input_Y->len ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_binary( &X0, input_X->x, input_X->len ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X,  16, X_hex ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X0, 16, X_hex ) == 0 );
+
+    mbedtls_mpi_swap( &X, &X );
+    TEST_ASSERT( sign_is_valid( &X ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &X0 ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_copy( &Y, &X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &X0 ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Y, &X0 ) == 0 );
-
 exit:
-    mbedtls_mpi_free( &X ); mbedtls_mpi_free( &Y ); mbedtls_mpi_free( &X0 );
-}
-/* END_CASE */
-
-/* BEGIN_CASE */
-void mpi_copy_self( int input_X )
-{
-    mbedtls_mpi X;
-    mbedtls_mpi_init( &X );
-
-    TEST_ASSERT( mbedtls_mpi_lset( &X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_copy( &X, &X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_int( &X, input_X ) == 0 );
-
-exit:
-    mbedtls_mpi_free( &X );
+    mbedtls_mpi_free( &X ); mbedtls_mpi_free( &X0 );
 }
 /* END_CASE */
 
@@ -713,10 +845,14 @@
     mbedtls_mpi_init( &X );
 
     TEST_ASSERT( mbedtls_mpi_grow( &X, before ) == 0 );
-    TEST_ASSERT( used <= before );
-    memset( X.p, 0x2a, used * sizeof( mbedtls_mpi_uint ) );
+    if( used > 0 )
+    {
+        size_t used_bit_count = used * 8 * sizeof( mbedtls_mpi_uint );
+        TEST_ASSERT( mbedtls_mpi_set_bit( &X, used_bit_count - 1, 1 ) == 0 );
+    }
+    TEST_EQUAL( X.n, (size_t) before );
     TEST_ASSERT( mbedtls_mpi_shrink( &X, min ) == 0 );
-    TEST_ASSERT( X.n == (size_t) after );
+    TEST_EQUAL( X.n, (size_t) after );
 
 exit:
     mbedtls_mpi_free( &X );
@@ -724,139 +860,28 @@
 /* END_CASE */
 
 /* BEGIN_CASE */
-void mbedtls_mpi_safe_cond_assign( int x_sign, char * x_str, int y_sign,
-                                   char * y_str )
-{
-    mbedtls_mpi X, Y, XX;
-    mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &XX );
-
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, 16, x_str ) == 0 );
-    X.s = x_sign;
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, 16, y_str ) == 0 );
-    Y.s = y_sign;
-    TEST_ASSERT( mbedtls_mpi_copy( &XX, &X ) == 0 );
-
-    TEST_ASSERT( mbedtls_mpi_safe_cond_assign( &X, &Y, 0 ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &XX ) == 0 );
-
-    TEST_ASSERT( mbedtls_mpi_safe_cond_assign( &X, &Y, 1 ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &Y ) == 0 );
-
-exit:
-    mbedtls_mpi_free( &X ); mbedtls_mpi_free( &Y ); mbedtls_mpi_free( &XX );
-}
-/* END_CASE */
-
-/* BEGIN_CASE */
-void mbedtls_mpi_safe_cond_swap( int x_sign, char * x_str, int y_sign,
-                                 char * y_str )
-{
-    mbedtls_mpi X, Y, XX, YY;
-
-    mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y );
-    mbedtls_mpi_init( &XX ); mbedtls_mpi_init( &YY );
-
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, 16, x_str ) == 0 );
-    X.s = x_sign;
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, 16, y_str ) == 0 );
-    Y.s = y_sign;
-
-    TEST_ASSERT( mbedtls_mpi_copy( &XX, &X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_copy( &YY, &Y ) == 0 );
-
-    TEST_ASSERT( mbedtls_mpi_safe_cond_swap( &X, &Y, 0 ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &XX ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Y, &YY ) == 0 );
-
-    TEST_ASSERT( mbedtls_mpi_safe_cond_swap( &X, &Y, 1 ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Y, &XX ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &YY ) == 0 );
-
-exit:
-    mbedtls_mpi_free( &X ); mbedtls_mpi_free( &Y );
-    mbedtls_mpi_free( &XX ); mbedtls_mpi_free( &YY );
-}
-/* END_CASE */
-
-/* BEGIN_CASE */
-void mbedtls_mpi_swap_sint( int input_X, int input_Y )
-{
-    mbedtls_mpi X, Y;
-    mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y );
-
-    TEST_ASSERT( mbedtls_mpi_lset( &X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_lset( &Y, input_Y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_int( &X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_int( &Y, input_Y ) == 0 );
-
-    mbedtls_mpi_swap( &X, &Y );
-    TEST_ASSERT( mbedtls_mpi_cmp_int( &X, input_Y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_int( &Y, input_X ) == 0 );
-
-exit:
-    mbedtls_mpi_free( &X ); mbedtls_mpi_free( &Y );
-}
-/* END_CASE */
-
-/* BEGIN_CASE */
-void mbedtls_mpi_swap_binary( data_t *input_X, data_t *input_Y )
-{
-    mbedtls_mpi X, Y, X0, Y0;
-    mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y );
-    mbedtls_mpi_init( &X0 ); mbedtls_mpi_init( &Y0 );
-
-    TEST_ASSERT( mbedtls_mpi_read_binary( &X, input_X->x, input_X->len ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_binary( &Y, input_Y->x, input_Y->len ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_binary( &X0, input_X->x, input_X->len ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_binary( &Y0, input_Y->x, input_Y->len ) == 0 );
-
-    mbedtls_mpi_swap( &X, &Y );
-    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &Y0 ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Y, &X0 ) == 0 );
-
-exit:
-    mbedtls_mpi_free( &X ); mbedtls_mpi_free( &Y );
-    mbedtls_mpi_free( &X0 ); mbedtls_mpi_free( &Y0 );
-}
-/* END_CASE */
-
-/* BEGIN_CASE */
-void mpi_swap_self( data_t *input_X )
-{
-    mbedtls_mpi X, X0;
-    mbedtls_mpi_init( &X ); mbedtls_mpi_init( &X0 );
-
-    TEST_ASSERT( mbedtls_mpi_read_binary( &X, input_X->x, input_X->len ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_binary( &X0, input_X->x, input_X->len ) == 0 );
-
-    mbedtls_mpi_swap( &X, &X );
-    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &X0 ) == 0 );
-
-exit:
-    mbedtls_mpi_free( &X ); mbedtls_mpi_free( &X0 );
-}
-/* END_CASE */
-
-/* BEGIN_CASE */
 void mbedtls_mpi_add_mpi( int radix_X, char * input_X, int radix_Y,
                           char * input_Y, int radix_A, char * input_A )
 {
     mbedtls_mpi X, Y, Z, A;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &Z ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, radix_Y, input_Y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, radix_Y, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
     TEST_ASSERT( mbedtls_mpi_add_mpi( &Z, &X, &Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &Z ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &A ) == 0 );
 
     /* result == first operand */
     TEST_ASSERT( mbedtls_mpi_add_mpi( &X, &X, &Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &A ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
 
     /* result == second operand */
     TEST_ASSERT( mbedtls_mpi_add_mpi( &Y, &X, &Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &Y ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Y, &A ) == 0 );
 
 exit:
@@ -871,18 +896,21 @@
     mbedtls_mpi X, A;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
     TEST_ASSERT( mbedtls_mpi_sub_abs( &X, &X, &X ) == 0 );
     TEST_ASSERT( mbedtls_mpi_cmp_int( &X, 0 ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
     TEST_ASSERT( mbedtls_mpi_add_abs( &X, &X, &X ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &A ) == 0 );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
     TEST_ASSERT( mbedtls_mpi_add_mpi( &X, &X, &X ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &A ) == 0 );
 
 exit:
@@ -898,19 +926,22 @@
     mbedtls_mpi X, Y, Z, A;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &Z ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, radix_Y, input_Y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, radix_Y, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
     TEST_ASSERT( mbedtls_mpi_add_abs( &Z, &X, &Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &Z ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &A ) == 0 );
 
     /* result == first operand */
     TEST_ASSERT( mbedtls_mpi_add_abs( &X, &X, &Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &A ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
 
     /* result == second operand */
     TEST_ASSERT( mbedtls_mpi_add_abs( &Y, &X, &Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &Y ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Y, &A ) == 0 );
 
 exit:
@@ -925,9 +956,10 @@
     mbedtls_mpi X, Z, A;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Z ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
     TEST_ASSERT( mbedtls_mpi_add_int( &Z, &X, input_Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &Z ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &A ) == 0 );
 
 exit:
@@ -942,19 +974,22 @@
     mbedtls_mpi X, Y, Z, A;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &Z ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, radix_Y, input_Y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, radix_Y, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
     TEST_ASSERT( mbedtls_mpi_sub_mpi( &Z, &X, &Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &Z ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &A ) == 0 );
 
     /* result == first operand */
     TEST_ASSERT( mbedtls_mpi_sub_mpi( &X, &X, &Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &A ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
 
     /* result == second operand */
     TEST_ASSERT( mbedtls_mpi_sub_mpi( &Y, &X, &Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &Y ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Y, &A ) == 0 );
 
 exit:
@@ -971,23 +1006,26 @@
     int res;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &Z ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, radix_Y, input_Y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, radix_Y, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
 
     res = mbedtls_mpi_sub_abs( &Z, &X, &Y );
     TEST_ASSERT( res == sub_result );
+    TEST_ASSERT( sign_is_valid( &Z ) );
     if( res == 0 )
         TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &A ) == 0 );
 
     /* result == first operand */
     TEST_ASSERT( mbedtls_mpi_sub_abs( &X, &X, &Y ) == sub_result );
+    TEST_ASSERT( sign_is_valid( &X ) );
     if( sub_result == 0 )
         TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &A ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
 
     /* result == second operand */
     TEST_ASSERT( mbedtls_mpi_sub_abs( &Y, &X, &Y ) == sub_result );
+    TEST_ASSERT( sign_is_valid( &Y ) );
     if( sub_result == 0 )
         TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Y, &A ) == 0 );
 
@@ -1003,9 +1041,10 @@
     mbedtls_mpi X, Z, A;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Z ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
     TEST_ASSERT( mbedtls_mpi_sub_int( &Z, &X, input_Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &Z ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &A ) == 0 );
 
 exit:
@@ -1020,10 +1059,11 @@
     mbedtls_mpi X, Y, Z, A;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &Z ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, radix_Y, input_Y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, radix_Y, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
     TEST_ASSERT( mbedtls_mpi_mul_mpi( &Z, &X, &Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &Z ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &A ) == 0 );
 
 exit:
@@ -1039,9 +1079,10 @@
     mbedtls_mpi X, Z, A;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Z ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
     TEST_ASSERT( mbedtls_mpi_mul_int( &Z, &X, input_Y ) == 0 );
+    TEST_ASSERT( sign_is_valid( &Z ) );
     if( strcmp( result_comparison, "==" ) == 0 )
         TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &A ) == 0 );
     else if( strcmp( result_comparison, "!=" ) == 0 )
@@ -1064,14 +1105,16 @@
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &Q ); mbedtls_mpi_init( &R );
     mbedtls_mpi_init( &A ); mbedtls_mpi_init( &B );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, radix_Y, input_Y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &B, radix_B, input_B ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, radix_Y, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &B, radix_B, input_B ) == 0 );
     res = mbedtls_mpi_div_mpi( &Q, &R, &X, &Y );
     TEST_ASSERT( res == div_result );
     if( res == 0 )
     {
+        TEST_ASSERT( sign_is_valid( &Q ) );
+        TEST_ASSERT( sign_is_valid( &R ) );
         TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Q, &A ) == 0 );
         TEST_ASSERT( mbedtls_mpi_cmp_mpi( &R, &B ) == 0 );
     }
@@ -1092,13 +1135,15 @@
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Q ); mbedtls_mpi_init( &R ); mbedtls_mpi_init( &A );
     mbedtls_mpi_init( &B );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &B, radix_B, input_B ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &B, radix_B, input_B ) == 0 );
     res = mbedtls_mpi_div_int( &Q, &R, &X, input_Y );
     TEST_ASSERT( res == div_result );
     if( res == 0 )
     {
+        TEST_ASSERT( sign_is_valid( &Q ) );
+        TEST_ASSERT( sign_is_valid( &R ) );
         TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Q, &A ) == 0 );
         TEST_ASSERT( mbedtls_mpi_cmp_mpi( &R, &B ) == 0 );
     }
@@ -1118,13 +1163,14 @@
     int res;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, radix_Y, input_Y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, radix_Y, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
     res = mbedtls_mpi_mod_mpi( &X, &X, &Y );
     TEST_ASSERT( res == div_result );
     if( res == 0 )
     {
+        TEST_ASSERT( sign_is_valid( &X ) );
         TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &A ) == 0 );
     }
 
@@ -1142,7 +1188,7 @@
     mbedtls_mpi_uint r;
     mbedtls_mpi_init( &X );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
     res = mbedtls_mpi_mod_int( &r, &X, input_Y );
     TEST_ASSERT( res == div_result );
     if( res == 0 )
@@ -1158,26 +1204,41 @@
 /* BEGIN_CASE */
 void mbedtls_mpi_exp_mod( int radix_A, char * input_A, int radix_E,
                           char * input_E, int radix_N, char * input_N,
-                          int radix_RR, char * input_RR, int radix_X,
-                          char * input_X, int div_result )
+                          int radix_X, char * input_X, int exp_result )
 {
     mbedtls_mpi A, E, N, RR, Z, X;
     int res;
     mbedtls_mpi_init( &A  ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &N );
     mbedtls_mpi_init( &RR ); mbedtls_mpi_init( &Z ); mbedtls_mpi_init( &X );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
 
-    if( strlen( input_RR ) )
-        TEST_ASSERT( mbedtls_mpi_read_string( &RR, radix_RR, input_RR ) == 0 );
-
-    res = mbedtls_mpi_exp_mod( &Z, &A, &E, &N, &RR );
-    TEST_ASSERT( res == div_result );
+    res = mbedtls_mpi_exp_mod( &Z, &A, &E, &N, NULL );
+    TEST_ASSERT( res == exp_result );
     if( res == 0 )
     {
+        TEST_ASSERT( sign_is_valid( &Z ) );
+        TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &X ) == 0 );
+    }
+
+    /* Now test again with the speed-up parameter supplied as an output. */
+    res = mbedtls_mpi_exp_mod( &Z, &A, &E, &N, &RR );
+    TEST_ASSERT( res == exp_result );
+    if( res == 0 )
+    {
+        TEST_ASSERT( sign_is_valid( &Z ) );
+        TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &X ) == 0 );
+    }
+
+    /* Now test again with the speed-up parameter supplied in calculated form. */
+    res = mbedtls_mpi_exp_mod( &Z, &A, &E, &N, &RR );
+    TEST_ASSERT( res == exp_result );
+    if( res == 0 )
+    {
+        TEST_ASSERT( sign_is_valid( &Z ) );
         TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &X ) == 0 );
     }
 
@@ -1211,7 +1272,7 @@
     TEST_ASSERT( mbedtls_mpi_set_bit( &N, 0, 1 ) == 0 );
 
     if( strlen( input_RR ) )
-        TEST_ASSERT( mbedtls_mpi_read_string( &RR, radix_RR, input_RR ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &RR, radix_RR, input_RR ) == 0 );
 
     TEST_ASSERT( mbedtls_mpi_exp_mod( &Z, &A, &E, &N, &RR ) == exp_result );
 
@@ -1230,13 +1291,14 @@
     int res;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y ); mbedtls_mpi_init( &Z ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Y, radix_Y, input_Y ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Y, radix_Y, input_Y ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
     res = mbedtls_mpi_inv_mod( &Z, &X, &Y );
     TEST_ASSERT( res == div_result );
     if( res == 0 )
     {
+        TEST_ASSERT( sign_is_valid( &Z ) );
         TEST_ASSERT( mbedtls_mpi_cmp_mpi( &Z, &A ) == 0 );
     }
 
@@ -1252,7 +1314,7 @@
     int res;
     mbedtls_mpi_init( &X );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
     res = mbedtls_mpi_is_prime_ext( &X, 40, mbedtls_test_rnd_std_rand, NULL );
     TEST_ASSERT( res == div_result );
 
@@ -1312,6 +1374,7 @@
 
         TEST_ASSERT( actual_bits >= (size_t) bits );
         TEST_ASSERT( actual_bits <= (size_t) bits + 1 );
+        TEST_ASSERT( sign_is_valid( &X ) );
 
         TEST_ASSERT( mbedtls_mpi_is_prime_ext( &X, 40,
                                                mbedtls_test_rnd_std_rand,
@@ -1338,9 +1401,10 @@
     mbedtls_mpi X, A;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
     TEST_ASSERT( mbedtls_mpi_shift_l( &X, shift_X ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &A ) == 0 );
 
 exit:
@@ -1355,9 +1419,10 @@
     mbedtls_mpi X, A;
     mbedtls_mpi_init( &X ); mbedtls_mpi_init( &A );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &A, radix_A, input_A ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &X, radix_X, input_X ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &A, radix_A, input_A ) == 0 );
     TEST_ASSERT( mbedtls_mpi_shift_r( &X, shift_X ) == 0 );
+    TEST_ASSERT( sign_is_valid( &X ) );
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &X, &A ) == 0 );
 
 exit:
@@ -1366,13 +1431,23 @@
 /* END_CASE */
 
 /* BEGIN_CASE */
-void mpi_fill_random( int wanted_bytes, int rng_bytes, int expected_ret )
+void mpi_fill_random( int wanted_bytes, int rng_bytes,
+                      int before, int expected_ret )
 {
     mbedtls_mpi X;
     int ret;
     size_t bytes_left = rng_bytes;
     mbedtls_mpi_init( &X );
 
+    if( before != 0 )
+    {
+        /* Set X to sign(before) * 2^(|before|-1) */
+        TEST_ASSERT( mbedtls_mpi_lset( &X, before > 0 ? 1 : -1 ) == 0 );
+        if( before < 0 )
+            before = - before;
+        TEST_ASSERT( mbedtls_mpi_shift_l( &X, before - 1 ) == 0 );
+    }
+
     ret = mbedtls_mpi_fill_random( &X, wanted_bytes,
                                    f_rng_bytes_left, &bytes_left );
     TEST_ASSERT( ret == expected_ret );
@@ -1389,6 +1464,7 @@
         TEST_ASSERT( mbedtls_mpi_size( &X ) + leading_zeros ==
                      (size_t) wanted_bytes );
         TEST_ASSERT( (int) bytes_left == rng_bytes - wanted_bytes );
+        TEST_ASSERT( sign_is_valid( &X ) );
     }
 
 exit:
@@ -1396,6 +1472,170 @@
 }
 /* END_CASE */
 
+/* BEGIN_CASE */
+void mpi_random_many( int min, data_t *bound_bytes, int iterations )
+{
+    /* Generate numbers in the range 1..bound-1. Do it iterations times.
+     * This function assumes that the value of bound is at least 2 and
+     * that iterations is large enough that a one-in-2^iterations chance
+     * effectively never occurs.
+     */
+
+    mbedtls_mpi upper_bound;
+    size_t n_bits;
+    mbedtls_mpi result;
+    size_t b;
+    /* If upper_bound is small, stats[b] is the number of times the value b
+     * has been generated. Otherwise stats[b] is the number of times a
+     * value with bit b set has been generated. */
+    size_t *stats = NULL;
+    size_t stats_len;
+    int full_stats;
+    size_t i;
+
+    mbedtls_mpi_init( &upper_bound );
+    mbedtls_mpi_init( &result );
+
+    TEST_EQUAL( 0, mbedtls_mpi_read_binary( &upper_bound,
+                                            bound_bytes->x, bound_bytes->len ) );
+    n_bits = mbedtls_mpi_bitlen( &upper_bound );
+    /* Consider a bound "small" if it's less than 2^5. This value is chosen
+     * to be small enough that the probability of missing one value is
+     * negligible given the number of iterations. It must be less than
+     * 256 because some of the code below assumes that "small" values
+     * fit in a byte. */
+    if( n_bits <= 5 )
+    {
+        full_stats = 1;
+        stats_len = bound_bytes->x[bound_bytes->len - 1];
+    }
+    else
+    {
+        full_stats = 0;
+        stats_len = n_bits;
+    }
+    ASSERT_ALLOC( stats, stats_len );
+
+    for( i = 0; i < (size_t) iterations; i++ )
+    {
+        mbedtls_test_set_step( i );
+        TEST_EQUAL( 0, mbedtls_mpi_random( &result, min, &upper_bound,
+                                           mbedtls_test_rnd_std_rand, NULL ) );
+
+        TEST_ASSERT( sign_is_valid( &result ) );
+        TEST_ASSERT( mbedtls_mpi_cmp_mpi( &result, &upper_bound ) < 0 );
+        TEST_ASSERT( mbedtls_mpi_cmp_int( &result, min ) >= 0 );
+        if( full_stats )
+        {
+            uint8_t value;
+            TEST_EQUAL( 0, mbedtls_mpi_write_binary( &result, &value, 1 ) );
+            TEST_ASSERT( value < stats_len );
+            ++stats[value];
+        }
+        else
+        {
+            for( b = 0; b < n_bits; b++ )
+                stats[b] += mbedtls_mpi_get_bit( &result, b );
+        }
+    }
+
+    if( full_stats )
+    {
+        for( b = min; b < stats_len; b++ )
+        {
+            mbedtls_test_set_step( 1000000 + b );
+            /* Assert that each value has been reached at least once.
+             * This is almost guaranteed if the iteration count is large
+             * enough. This is a very crude way of checking the distribution.
+             */
+            TEST_ASSERT( stats[b] > 0 );
+        }
+    }
+    else
+    {
+        int statistically_safe_all_the_way =
+            is_significantly_above_a_power_of_2( bound_bytes );
+        for( b = 0; b < n_bits; b++ )
+        {
+            mbedtls_test_set_step( 1000000 + b );
+            /* Assert that each bit has been set in at least one result and
+             * clear in at least one result. Provided that iterations is not
+             * too small, it would be extremely unlikely for this not to be
+             * the case if the results are uniformly distributed.
+             *
+             * As an exception, the top bit may legitimately never be set
+             * if bound is a power of 2 or only slightly above.
+             */
+            if( statistically_safe_all_the_way || b != n_bits - 1 )
+            {
+                TEST_ASSERT( stats[b] > 0 );
+            }
+            TEST_ASSERT( stats[b] < (size_t) iterations );
+        }
+    }
+
+exit:
+    mbedtls_mpi_free( &upper_bound );
+    mbedtls_mpi_free( &result );
+    mbedtls_free( stats );
+}
+/* END_CASE */
+
+/* BEGIN_CASE */
+void mpi_random_sizes( int min, data_t *bound_bytes, int nlimbs, int before )
+{
+    mbedtls_mpi upper_bound;
+    mbedtls_mpi result;
+
+    mbedtls_mpi_init( &upper_bound );
+    mbedtls_mpi_init( &result );
+
+    if( before != 0 )
+    {
+        /* Set result to sign(before) * 2^(|before|-1) */
+        TEST_ASSERT( mbedtls_mpi_lset( &result, before > 0 ? 1 : -1 ) == 0 );
+        if( before < 0 )
+            before = - before;
+        TEST_ASSERT( mbedtls_mpi_shift_l( &result, before - 1 ) == 0 );
+    }
+
+    TEST_EQUAL( 0, mbedtls_mpi_grow( &result, nlimbs ) );
+    TEST_EQUAL( 0, mbedtls_mpi_read_binary( &upper_bound,
+                                            bound_bytes->x, bound_bytes->len ) );
+    TEST_EQUAL( 0, mbedtls_mpi_random( &result, min, &upper_bound,
+                                       mbedtls_test_rnd_std_rand, NULL ) );
+    TEST_ASSERT( sign_is_valid( &result ) );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &result, &upper_bound ) < 0 );
+    TEST_ASSERT( mbedtls_mpi_cmp_int( &result, min ) >= 0 );
+
+exit:
+    mbedtls_mpi_free( &upper_bound );
+    mbedtls_mpi_free( &result );
+}
+/* END_CASE */
+
+/* BEGIN_CASE */
+void mpi_random_fail( int min, data_t *bound_bytes, int expected_ret )
+{
+    mbedtls_mpi upper_bound;
+    mbedtls_mpi result;
+    int actual_ret;
+
+    mbedtls_mpi_init( &upper_bound );
+    mbedtls_mpi_init( &result );
+
+    TEST_EQUAL( 0, mbedtls_mpi_read_binary( &upper_bound,
+                                            bound_bytes->x, bound_bytes->len ) );
+    actual_ret = mbedtls_mpi_random( &result, min, &upper_bound,
+                                     mbedtls_test_rnd_std_rand, NULL );
+    TEST_EQUAL( expected_ret, actual_ret );
+
+exit:
+    mbedtls_mpi_free( &upper_bound );
+    mbedtls_mpi_free( &result );
+}
+/* END_CASE */
+
 /* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
 void mpi_selftest(  )
 {
diff --git a/tests/suites/test_suite_pk.function b/tests/suites/test_suite_pk.function
index bc469b6..a249ba2 100644
--- a/tests/suites/test_suite_pk.function
+++ b/tests/suites/test_suite_pk.function
@@ -670,8 +670,8 @@
     rsa = mbedtls_pk_rsa( pk );
 
     rsa->len = mod / 8;
-    TEST_ASSERT( mbedtls_mpi_read_string( &rsa->N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &rsa->E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &rsa->N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &rsa->E, radix_E, input_E ) == 0 );
 
 
     if( mbedtls_md_info_from_type( digest ) != NULL )
@@ -713,8 +713,8 @@
     rsa = mbedtls_pk_rsa( pk );
 
     rsa->len = mod / 8;
-    TEST_ASSERT( mbedtls_mpi_read_string( &rsa->N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &rsa->E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &rsa->N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &rsa->E, radix_E, input_E ) == 0 );
 
 
     if( digest != MBEDTLS_MD_NONE )
@@ -801,7 +801,7 @@
 
     TEST_ASSERT( mbedtls_pk_setup( &prv, mbedtls_pk_info_from_type( pk_type ) ) == 0 );
     TEST_ASSERT( mbedtls_ecp_group_load( &mbedtls_pk_ec( prv )->grp, grp_id ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &mbedtls_pk_ec( prv )->d, 16, d_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &mbedtls_pk_ec( prv )->d, 16, d_str ) == 0 );
 
     TEST_ASSERT( mbedtls_pk_setup( &pub, mbedtls_pk_info_from_type( pk_type ) ) == 0 );
     TEST_ASSERT( mbedtls_ecp_group_load( &mbedtls_pk_ec( pub )->grp, grp_id ) == 0 );
@@ -985,8 +985,8 @@
     rsa = mbedtls_pk_rsa( pk );
 
     rsa->len = mod / 8;
-    TEST_ASSERT( mbedtls_mpi_read_string( &rsa->N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &rsa->E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &rsa->N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &rsa->E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_pk_encrypt( &pk, message->x, message->len,
                             output, &olen, sizeof( output ),
@@ -1024,12 +1024,12 @@
     rsa = mbedtls_pk_rsa( pk );
 
     /* load public key */
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     /* load private key */
-    TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P, radix_P, input_P ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Q, radix_Q, input_Q ) == 0 );
     TEST_ASSERT( mbedtls_rsa_import( rsa, &N, &P, &Q, NULL, &E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_get_len( rsa ) == (size_t) ( mod / 8 ) );
     TEST_ASSERT( mbedtls_rsa_complete( rsa ) == 0 );
diff --git a/tests/suites/test_suite_pkcs1_v15.function b/tests/suites/test_suite_pkcs1_v15.function
index 068027b..d355340 100644
--- a/tests/suites/test_suite_pkcs1_v15.function
+++ b/tests/suites/test_suite_pkcs1_v15.function
@@ -19,6 +19,8 @@
     mbedtls_test_rnd_buf_info info;
     mbedtls_mpi N, E;
 
+    info.fallback_f_rng = mbedtls_test_rnd_std_rand;
+    info.fallback_p_rng = NULL;
     info.buf = rnd_buf->x;
     info.length = rnd_buf->len;
 
@@ -26,8 +28,8 @@
     mbedtls_rsa_init( &ctx, MBEDTLS_RSA_PKCS_V15, hash );
     memset( output, 0x00, sizeof( output ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, NULL, NULL, NULL, &E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( ( mod + 7 ) / 8 ) );
     TEST_ASSERT( mbedtls_rsa_check_pubkey( &ctx ) == 0 );
@@ -74,10 +76,10 @@
     memset( output, 0x00, sizeof( output ) );
     memset( &rnd_info, 0, sizeof( mbedtls_test_rnd_pseudo_info ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P, radix_P, input_P ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Q, radix_Q, input_Q ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, &P, &Q, NULL, &E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( ( mod + 7 ) / 8 ) );
@@ -275,6 +277,8 @@
     mbedtls_mpi N, P, Q, E;
     mbedtls_test_rnd_buf_info info;
 
+    info.fallback_f_rng = mbedtls_test_rnd_std_rand;
+    info.fallback_p_rng = NULL;
     info.buf = rnd_buf->x;
     info.length = rnd_buf->len;
 
@@ -285,10 +289,10 @@
     memset( hash_result, 0x00, sizeof( hash_result ) );
     memset( output, 0x00, sizeof( output ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P, radix_P, input_P ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Q, radix_Q, input_Q ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, &P, &Q, NULL, &E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( ( mod + 7 ) / 8 ) );
@@ -331,8 +335,8 @@
     mbedtls_rsa_init( &ctx, MBEDTLS_RSA_PKCS_V15, hash );
     memset( hash_result, 0x00, sizeof( hash_result ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, NULL, NULL, NULL, &E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( ( mod + 7 ) / 8 ) );
     TEST_ASSERT( mbedtls_rsa_check_pubkey( &ctx ) == 0 );
diff --git a/tests/suites/test_suite_pkcs1_v21.function b/tests/suites/test_suite_pkcs1_v21.function
index 97f440d..c23a4ad 100644
--- a/tests/suites/test_suite_pkcs1_v21.function
+++ b/tests/suites/test_suite_pkcs1_v21.function
@@ -18,6 +18,8 @@
     mbedtls_test_rnd_buf_info info;
     mbedtls_mpi N, E;
 
+    info.fallback_f_rng = mbedtls_test_rnd_std_rand;
+    info.fallback_p_rng = NULL;
     info.buf = rnd_buf->x;
     info.length = rnd_buf->len;
 
@@ -124,6 +126,8 @@
     mbedtls_test_rnd_buf_info info;
     mbedtls_mpi N, P, Q, E;
 
+    info.fallback_f_rng = mbedtls_test_rnd_std_rand;
+    info.fallback_p_rng = NULL;
     info.buf = rnd_buf->x;
     info.length = rnd_buf->len;
 
diff --git a/tests/suites/test_suite_pkparse.data b/tests/suites/test_suite_pkparse.data
index 91d5197..4964bfa 100644
--- a/tests/suites/test_suite_pkparse.data
+++ b/tests/suites/test_suite_pkparse.data
@@ -989,7 +989,7 @@
 pk_parse_public_keyfile_ec:"data_files/ec_bp512_pub.pem":0
 
 Parse EC Key #1 (SEC1 DER)
-depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP192R1_ENABLED
+depends_on:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP192R1_ENABLED
 pk_parse_keyfile_ec:"data_files/ec_prv.sec1.der":"NULL":0
 
 Parse EC Key #2 (SEC1 PEM)
@@ -1005,15 +1005,15 @@
 pk_parse_keyfile_ec:"data_files/ec_prv.pk8.der":"NULL":0
 
 Parse EC Key #4a (PKCS8 DER, no public key)
-depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+depends_on:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
 pk_parse_keyfile_ec:"data_files/ec_prv.pk8nopub.der":"NULL":0
 
 Parse EC Key #4b (PKCS8 DER, no public key, with parameters)
-depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+depends_on:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
 pk_parse_keyfile_ec:"data_files/ec_prv.pk8nopubparam.der":"NULL":0
 
 Parse EC Key #4c (PKCS8 DER, with parameters)
-depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+depends_on:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
 pk_parse_keyfile_ec:"data_files/ec_prv.pk8param.der":"NULL":0
 
 Parse EC Key #5 (PKCS8 PEM)
@@ -1069,7 +1069,7 @@
 pk_parse_keyfile_ec:"data_files/ec_bp512_prv.pem":"NULL":0
 
 Parse EC Key #15 (SEC1 DER, secp256k1, SpecifiedECDomain)
-depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256K1_ENABLED:MBEDTLS_PK_PARSE_EC_EXTENDED
+depends_on:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256K1_ENABLED:MBEDTLS_PK_PARSE_EC_EXTENDED
 pk_parse_keyfile_ec:"data_files/ec_prv.specdom.der":"NULL":0
 
 Key ASN1 (No data)
diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
index 4d9c7b6..712e98c 100644
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -2206,6 +2206,14 @@
 depends_on:PSA_WANT_ALG_RSA_PKCS1V15_SIGN:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
 sign_hash_fail:PSA_KEY_TYPE_RSA_KEY_PAIR:"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":PSA_ALG_RSA_PKCS1V15_SIGN(PSA_ALG_SHA_256):"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad":127:PSA_ERROR_BUFFER_TOO_SMALL
 
+PSA sign hash: RSA PSS SHA-256, wrong hash length (0 bytes)
+depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
+sign_hash_fail:PSA_KEY_TYPE_RSA_KEY_PAIR:"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":PSA_ALG_RSA_PSS(PSA_ALG_SHA_256):"":127:PSA_ERROR_INVALID_ARGUMENT
+
+PSA sign hash: RSA PSS SHA-256, wrong hash length (129 bytes)
+depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
+sign_hash_fail:PSA_KEY_TYPE_RSA_KEY_PAIR:"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":PSA_ALG_RSA_PSS(PSA_ALG_SHA_256):"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":127:PSA_ERROR_INVALID_ARGUMENT
+
 PSA sign hash: deterministic ECDSA SECP256R1 SHA-256, output buffer too small
 depends_on:PSA_WANT_ALG_DETERMINISTIC_ECDSA:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:PSA_WANT_ECC_SECP_R1_256
 sign_hash_fail:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"ab45435712649cb30bbddac49197eebf2740ffc7f874d9244c3460f54f322d3a":PSA_ALG_DETERMINISTIC_ECDSA( PSA_ALG_SHA_256 ):"9ac4335b469bbd791439248504dd0d49c71349a295fee5a1c68507f45a9e1c7b":63:PSA_ERROR_BUFFER_TOO_SMALL
@@ -2246,18 +2254,10 @@
 depends_on:PSA_WANT_ALG_RSA_PKCS1V15_SIGN:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
 sign_verify_hash:PSA_KEY_TYPE_RSA_KEY_PAIR:"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":PSA_ALG_RSA_PKCS1V15_SIGN(PSA_ALG_SHA_256):"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"
 
-PSA sign/verify hash: RSA PSS SHA-256, 0 bytes
-depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
-sign_verify_hash:PSA_KEY_TYPE_RSA_KEY_PAIR:"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":PSA_ALG_RSA_PSS(PSA_ALG_SHA_256):""
-
 PSA sign/verify hash: RSA PSS SHA-256, 32 bytes (hash size)
 depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
 sign_verify_hash:PSA_KEY_TYPE_RSA_KEY_PAIR:"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":PSA_ALG_RSA_PSS(PSA_ALG_SHA_256):"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"
 
-PSA sign/verify hash: RSA PSS SHA-256, 129 bytes
-depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
-sign_verify_hash:PSA_KEY_TYPE_RSA_KEY_PAIR:"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":PSA_ALG_RSA_PSS(PSA_ALG_SHA_256):"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
-
 PSA sign/verify hash: randomized ECDSA SECP256R1 SHA-256
 depends_on:PSA_WANT_ALG_ECDSA:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:PSA_WANT_ECC_SECP_R1_256
 sign_verify_hash:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"ab45435712649cb30bbddac49197eebf2740ffc7f874d9244c3460f54f322d3a":PSA_ALG_ECDSA( PSA_ALG_SHA_256 ):"9ac4335b469bbd791439248504dd0d49c71349a295fee5a1c68507f45a9e1c7b"
@@ -2314,17 +2314,17 @@
 depends_on:PSA_WANT_ALG_RSA_PKCS1V15_SIGN:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
 verify_hash_fail:PSA_KEY_TYPE_RSA_PUBLIC_KEY:"30818902818100af057d396ee84fb75fdbb5c2b13c7fe5a654aa8aa2470b541ee1feb0b12d25c79711531249e1129628042dbbb6c120d1443524ef4c0e6e1d8956eeb2077af12349ddeee54483bc06c2c61948cd02b202e796aebd94d3a7cbf859c2c1819c324cb82b9cd34ede263a2abffe4733f077869e8660f7d6834da53d690ef7985f6bc30203010001":PSA_ALG_RSA_PKCS1V15_SIGN(PSA_ALG_SHA_256):"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad":"21a73664d55b39c7ea6c1e5b5011724a11e1d7073d3a68f48c836fad153a1d91b6abdbc8f69da13b206cc96af6363b114458b026af14b24fab8929ed634c6a2acace0bcc62d9bb6a984afbcbfcd3a0608d32a2bae535b9cd1ecdf9dd281db1e0025c3bfb5512963ec3b98ddaa69e38bc3c84b1b61a04e5648640856aacc6fc7311":PSA_ERROR_INVALID_SIGNATURE
 
-PSA verify hash: RSA PSS SHA-256, good signature, 0 bytes
-depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
-verify_hash:PSA_KEY_TYPE_RSA_PUBLIC_KEY:"30818902818100af057d396ee84fb75fdbb5c2b13c7fe5a654aa8aa2470b541ee1feb0b12d25c79711531249e1129628042dbbb6c120d1443524ef4c0e6e1d8956eeb2077af12349ddeee54483bc06c2c61948cd02b202e796aebd94d3a7cbf859c2c1819c324cb82b9cd34ede263a2abffe4733f077869e8660f7d6834da53d690ef7985f6bc30203010001":PSA_ALG_RSA_PSS(PSA_ALG_SHA_256):"":"34c011b625c32d992f4ab8fcfa52b616ea66270b5b75a4fc71af712f9b8806bcdd374ce50eafcbb489562b93347885f93c2de1d404c45cacccefceb112ff6ffdfe4264f91d66320bbbe09304b851b8ad6280bbccc571eebcd49c7db5dfa399a6289e1978407904598751613d9870770cdd8507e3dc7b46851dbf05ae1df2988d"
-
 PSA verify hash: RSA PSS SHA-256, good signature, 32 bytes (hash size)
 depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
 verify_hash:PSA_KEY_TYPE_RSA_PUBLIC_KEY:"30818902818100af057d396ee84fb75fdbb5c2b13c7fe5a654aa8aa2470b541ee1feb0b12d25c79711531249e1129628042dbbb6c120d1443524ef4c0e6e1d8956eeb2077af12349ddeee54483bc06c2c61948cd02b202e796aebd94d3a7cbf859c2c1819c324cb82b9cd34ede263a2abffe4733f077869e8660f7d6834da53d690ef7985f6bc30203010001":PSA_ALG_RSA_PSS(PSA_ALG_SHA_256):"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad":"1967ae568cc071dfebeeca76b11d40bd1ec5af241c50b3dcceff21f4536c0693a7179a8d5d163a7625fefd37c161127800edeebc24fa73ca772096827bd3f75e8ccf2c64f07b7171b5c99022a4d73b760f34a385ccff0bd5ed7997d2a29d2847acb0767f93a2a404bc046c97de66d95dc9f7646fdb216b627b2ea0de8afcefb7"
 
-PSA verify hash: RSA PSS SHA-256, good signature, 129 bytes
+PSA verify hash: RSA PSS SHA-256, wrong hash length (0 bytes)
 depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
-verify_hash:PSA_KEY_TYPE_RSA_PUBLIC_KEY:"30818902818100af057d396ee84fb75fdbb5c2b13c7fe5a654aa8aa2470b541ee1feb0b12d25c79711531249e1129628042dbbb6c120d1443524ef4c0e6e1d8956eeb2077af12349ddeee54483bc06c2c61948cd02b202e796aebd94d3a7cbf859c2c1819c324cb82b9cd34ede263a2abffe4733f077869e8660f7d6834da53d690ef7985f6bc30203010001":PSA_ALG_RSA_PSS(PSA_ALG_SHA_256):"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":"1491cead330b4ad5b092f8351518141ac11d0888591572669c1e79d6e932c488acd62d44479b0e14cd91a048778bc02398a772ad6bdb4f7764780cf0afe70293d0cac86f2695a1dcb54568bb37d7086f9e86f95a6802d2ee5a4facaa762beff5261bb2816b62cb5af86404974c3f6b67985ac1fbfdf46d6de54f6e29d9274308"
+verify_hash_fail:PSA_KEY_TYPE_RSA_PUBLIC_KEY:"30818902818100af057d396ee84fb75fdbb5c2b13c7fe5a654aa8aa2470b541ee1feb0b12d25c79711531249e1129628042dbbb6c120d1443524ef4c0e6e1d8956eeb2077af12349ddeee54483bc06c2c61948cd02b202e796aebd94d3a7cbf859c2c1819c324cb82b9cd34ede263a2abffe4733f077869e8660f7d6834da53d690ef7985f6bc30203010001":PSA_ALG_RSA_PSS(PSA_ALG_SHA_256):"":"34c011b625c32d992f4ab8fcfa52b616ea66270b5b75a4fc71af712f9b8806bcdd374ce50eafcbb489562b93347885f93c2de1d404c45cacccefceb112ff6ffdfe4264f91d66320bbbe09304b851b8ad6280bbccc571eebcd49c7db5dfa399a6289e1978407904598751613d9870770cdd8507e3dc7b46851dbf05ae1df2988d":PSA_ERROR_INVALID_ARGUMENT
+
+PSA verify hash: RSA PSS SHA-256, wrong hash length (129 bytes)
+depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
+verify_hash_fail:PSA_KEY_TYPE_RSA_PUBLIC_KEY:"30818902818100af057d396ee84fb75fdbb5c2b13c7fe5a654aa8aa2470b541ee1feb0b12d25c79711531249e1129628042dbbb6c120d1443524ef4c0e6e1d8956eeb2077af12349ddeee54483bc06c2c61948cd02b202e796aebd94d3a7cbf859c2c1819c324cb82b9cd34ede263a2abffe4733f077869e8660f7d6834da53d690ef7985f6bc30203010001":PSA_ALG_RSA_PSS(PSA_ALG_SHA_256):"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":"1491cead330b4ad5b092f8351518141ac11d0888591572669c1e79d6e932c488acd62d44479b0e14cd91a048778bc02398a772ad6bdb4f7764780cf0afe70293d0cac86f2695a1dcb54568bb37d7086f9e86f95a6802d2ee5a4facaa762beff5261bb2816b62cb5af86404974c3f6b67985ac1fbfdf46d6de54f6e29d9274308":PSA_ERROR_INVALID_ARGUMENT
 
 PSA verify hash: ECDSA SECP256R1, good
 depends_on:PSA_WANT_ALG_ECDSA:PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY:MBEDTLS_PK_PARSE_C:PSA_WANT_ECC_SECP_R1_256
@@ -2777,6 +2777,22 @@
 depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
 derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_NONE:PSA_SUCCESS
 
+PSA key derivation: HKDF-SHA-256, good case, omitted salt
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):0:UNUSED:"":UNUSED:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_NONE:PSA_SUCCESS
+
+PSA key derivation: HKDF-SHA-256, good case, info first
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:PSA_KEY_TYPE_NONE:PSA_SUCCESS
+
+PSA key derivation: HKDF-SHA-256, good case, info after salt
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_NONE:PSA_SUCCESS
+
+PSA key derivation: HKDF-SHA-256, good case, omitted salt, info first
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:0:UNUSED:"":UNUSED:PSA_KEY_TYPE_NONE:PSA_SUCCESS
+
 PSA key derivation: HKDF-SHA-256, good case, key output
 depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
 derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_DERIVE:PSA_SUCCESS
@@ -2811,6 +2827,10 @@
 depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
 derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_RAW_DATA:PSA_ERROR_NOT_PERMITTED
 
+PSA key derivation: HKDF-SHA-256, missing secret, key output
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:0:UNUSED:"":UNUSED:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_RAW_DATA:PSA_ERROR_NOT_PERMITTED
+
 PSA key derivation: HKDF-SHA-256, RAW_DATA key as salt
 depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
 derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_RAW_DATA:"412073616c74":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_DERIVE:PSA_SUCCESS
@@ -2833,14 +2853,94 @@
 depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
 derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_DERIVE:"4120696e666f":PSA_ERROR_INVALID_ARGUMENT:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
 
+PSA key derivation: HKDF-SHA-256, salt after secret
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: HKDF-SHA-256, missing secret
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:0:UNUSED:"":UNUSED:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: HKDF-SHA-256, missing info
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:0:UNUSED:"":UNUSED:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: HKDF-SHA-256, duplicate salt step
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: HKDF-SHA-256, duplicate secret step (direct, direct)
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: HKDF-SHA-256, duplicate secret step (direct, key)
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: HKDF-SHA-256, duplicate secret step (key, direct)
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0a0a0a0a":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_NONE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: HKDF-SHA-256, duplicate secret step (key, key)
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0a0a0a0a":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: HKDF-SHA-256, duplicate info step (non-consecutive)
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: HKDF-SHA-256, duplicate info step (consecutive)
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: HKDF-SHA-256, reject label step
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_LABEL:PSA_KEY_TYPE_NONE:"":PSA_ERROR_INVALID_ARGUMENT:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: HKDF-SHA-256, reject seed step
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
+derive_input:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SEED:PSA_KEY_TYPE_NONE:"":PSA_ERROR_INVALID_ARGUMENT:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
 PSA key derivation: TLS 1.2 PRF SHA-256, good case
 depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF
 derive_input:PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SEED:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_LABEL:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_DERIVE:PSA_SUCCESS
 
+PSA key derivation: ECDH with TLS 1.2 PRF SHA-256, good case
+depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:PSA_WANT_ECC_SECP_R1_256
+derive_input:PSA_ALG_KEY_AGREEMENT(PSA_ALG_ECDH, PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256)):PSA_KEY_DERIVATION_INPUT_SEED:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_LABEL:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_NONE:PSA_SUCCESS
+
+PSA key derivation: TLS 1.2 PRF SHA-256, missing label
+depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF
+derive_input:PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SEED:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_SUCCESS:0:UNUSED:"":UNUSED:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: ECDH with TLS 1.2 PRF SHA-256, missing label
+depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:PSA_WANT_ECC_SECP_R1_256
+derive_input:PSA_ALG_KEY_AGREEMENT(PSA_ALG_ECDH, PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256)):PSA_KEY_DERIVATION_INPUT_SEED:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":PSA_SUCCESS:0:UNUSED:"":UNUSED:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: TLS 1.2 PRF SHA-256, missing label and secret
+depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF
+derive_input:PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SEED:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:0:UNUSED:"":UNUSED:0:UNUSED:"":UNUSED:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: ECDH with TLS 1.2 PRF SHA-256, missing label and secret
+depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:PSA_WANT_ECC_SECP_R1_256
+derive_input:PSA_ALG_KEY_AGREEMENT(PSA_ALG_ECDH, PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256)):PSA_KEY_DERIVATION_INPUT_SEED:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:0:UNUSED:"":UNUSED:0:UNUSED:"":UNUSED:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: TLS 1.2 PRF SHA-256, no inputs
+depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF
+derive_input:PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256):0:UNUSED:"":UNUSED:0:UNUSED:"":UNUSED:0:UNUSED:"":UNUSED:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: ECDH with TLS 1.2 PRF SHA-256, no inputs
+depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:PSA_WANT_ECC_SECP_R1_256
+derive_input:PSA_ALG_KEY_AGREEMENT(PSA_ALG_ECDH, PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256)):0:UNUSED:"":UNUSED:0:UNUSED:"":UNUSED:0:UNUSED:"":UNUSED:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
 PSA key derivation: TLS 1.2 PRF SHA-256, key first
 depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF
 derive_input:PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_SEED:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_LABEL:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
 
+PSA key derivation: ECDH with TLS 1.2 PRF SHA-256, key first
+depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:PSA_WANT_ECC_SECP_R1_256
+derive_input:PSA_ALG_KEY_AGREEMENT(PSA_ALG_ECDH, PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256)):PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_SEED:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_LABEL:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
 PSA key derivation: TLS 1.2 PRF SHA-256, label first
 depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF
 derive_input:PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_LABEL:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_DERIVE:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_SEED:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
@@ -2893,20 +2993,36 @@
 depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:PSA_WANT_ECC_SECP_R1_256
 derive_input:PSA_ALG_KEY_AGREEMENT(PSA_ALG_ECDH, PSA_ALG_HKDF(PSA_ALG_SHA_256)):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_NONE:PSA_SUCCESS
 
+PSA key derivation: ECDH on P256 with HKDF-SHA256, omitted salt
+depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:PSA_WANT_ECC_SECP_R1_256
+derive_input:PSA_ALG_KEY_AGREEMENT(PSA_ALG_ECDH, PSA_ALG_HKDF(PSA_ALG_SHA_256)):0:UNUSED:"":UNUSED:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_NONE:PSA_SUCCESS
+
+PSA key derivation: ECDH on P256 with HKDF-SHA256, info first
+depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:PSA_WANT_ECC_SECP_R1_256
+derive_input:PSA_ALG_KEY_AGREEMENT(PSA_ALG_ECDH, PSA_ALG_HKDF(PSA_ALG_SHA_256)):PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":PSA_SUCCESS:PSA_KEY_TYPE_NONE:PSA_SUCCESS
+
 PSA key derivation: ECDH on P256 with HKDF-SHA256, key output
 depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:PSA_WANT_ECC_SECP_R1_256
 derive_input:PSA_ALG_KEY_AGREEMENT(PSA_ALG_ECDH, PSA_ALG_HKDF(PSA_ALG_SHA_256)):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_TYPE_RAW_DATA:PSA_SUCCESS
 
-PSA key derivation: HKDF invalid state (double generate + read past capacity)
+PSA key derivation: ECDH on P256 with HKDF-SHA256, salt after secret
+depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:PSA_WANT_ECC_SECP_R1_256
+derive_input:PSA_ALG_KEY_AGREEMENT(PSA_ALG_ECDH, PSA_ALG_HKDF(PSA_ALG_SHA_256)):PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_DERIVATION_INPUT_INFO:PSA_KEY_TYPE_NONE:"":PSA_ERROR_BAD_STATE:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation: ECDH on P256 with HKDF-SHA256, missing info
+depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:PSA_WANT_ECC_SECP_R1_256
+derive_input:PSA_ALG_KEY_AGREEMENT(PSA_ALG_ECDH, PSA_ALG_HKDF(PSA_ALG_SHA_256)):PSA_KEY_DERIVATION_INPUT_SALT:PSA_KEY_TYPE_NONE:"":PSA_SUCCESS:PSA_KEY_DERIVATION_INPUT_SECRET:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":PSA_SUCCESS:0:UNUSED:"":UNUSED:PSA_KEY_TYPE_NONE:PSA_ERROR_BAD_STATE
+
+PSA key derivation over capacity: HKDF
 depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
-test_derive_invalid_key_derivation_state:PSA_ALG_HKDF(PSA_ALG_SHA_256)
+derive_over_capacity:PSA_ALG_HKDF(PSA_ALG_SHA_256)
 
-PSA key derivation: TLS 1.2 PRF invalid state (double generate + read past capacity)
+PSA key derivation over capacity: TLS 1.2 PRF
 depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF
-test_derive_invalid_key_derivation_state:PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256)
+derive_over_capacity:PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256)
 
-PSA key derivation: invalid state (call read/get_capacity after init and abort)
-test_derive_invalid_key_derivation_tests:
+PSA key derivation: actions without setup
+derive_actions_without_setup:
 
 PSA key derivation: HKDF SHA-256, RFC5869 #1, output 42+0
 depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index 6689956..678cb77 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -16,6 +16,9 @@
 #include "test/psa_crypto_helpers.h"
 #include "test/psa_exercise_key.h"
 
+/* If this comes up, it's a bug in the test code or in the test data. */
+#define UNUSED 0xdeadbeef
+
 /** An invalid export length that will never be set by psa_export_key(). */
 static const size_t INVALID_EXPORT_LENGTH = ~0U;
 
@@ -2045,7 +2048,21 @@
         mbedtls_test_set_step( output_size );
         ASSERT_ALLOC( actual_mac, output_size );
 
-        /* Calculate the MAC. */
+        /* Calculate the MAC, one-shot case. */
+        TEST_EQUAL( psa_mac_compute( key, alg,
+                                     input->x, input->len,
+                                     actual_mac, output_size, &mac_length ),
+                    expected_status );
+        if( expected_status == PSA_SUCCESS )
+        {
+            ASSERT_COMPARE( expected_mac->x, expected_mac->len,
+                            actual_mac, mac_length );
+        }
+
+        if( output_size > 0 )
+            memset( actual_mac, 0, output_size );
+
+        /* Calculate the MAC, multi-part case. */
         PSA_ASSERT( psa_mac_sign_setup( &operation, key, alg ) );
         PSA_ASSERT( psa_mac_update( &operation,
                                     input->x, input->len ) );
@@ -2097,7 +2114,11 @@
     PSA_ASSERT( psa_import_key( &attributes, key_data->x, key_data->len,
                                 &key ) );
 
-    /* Test the correct MAC. */
+    /* Verify correct MAC, one-shot case. */
+    PSA_ASSERT( psa_mac_verify( key, alg, input->x, input->len,
+                                expected_mac->x, expected_mac->len ) );
+
+    /* Verify correct MAC, multi-part case. */
     PSA_ASSERT( psa_mac_verify_setup( &operation, key, alg ) );
     PSA_ASSERT( psa_mac_update( &operation,
                                 input->x, input->len ) );
@@ -2105,7 +2126,14 @@
                                        expected_mac->x,
                                        expected_mac->len ) );
 
-    /* Test a MAC that's too short. */
+    /* Test a MAC that's too short, one-shot case. */
+    TEST_EQUAL( psa_mac_verify( key, alg,
+                                input->x, input->len,
+                                expected_mac->x,
+                                expected_mac->len - 1 ),
+                PSA_ERROR_INVALID_SIGNATURE );
+
+    /* Test a MAC that's too short, multi-part case. */
     PSA_ASSERT( psa_mac_verify_setup( &operation, key, alg ) );
     PSA_ASSERT( psa_mac_update( &operation,
                                 input->x, input->len ) );
@@ -2114,9 +2142,15 @@
                                        expected_mac->len - 1 ),
                 PSA_ERROR_INVALID_SIGNATURE );
 
-    /* Test a MAC that's too long. */
+    /* Test a MAC that's too long, one-shot case. */
     ASSERT_ALLOC( perturbed_mac, expected_mac->len + 1 );
     memcpy( perturbed_mac, expected_mac->x, expected_mac->len );
+    TEST_EQUAL( psa_mac_verify( key, alg,
+                                input->x, input->len,
+                                 perturbed_mac, expected_mac->len + 1 ),
+                PSA_ERROR_INVALID_SIGNATURE );
+
+    /* Test a MAC that's too long, multi-part case. */
     PSA_ASSERT( psa_mac_verify_setup( &operation, key, alg ) );
     PSA_ASSERT( psa_mac_update( &operation,
                                 input->x, input->len ) );
@@ -2130,6 +2164,12 @@
     {
         mbedtls_test_set_step( i );
         perturbed_mac[i] ^= 1;
+
+        TEST_EQUAL( psa_mac_verify( key, alg,
+                                    input->x, input->len,
+                                    perturbed_mac, expected_mac->len ),
+                    PSA_ERROR_INVALID_SIGNATURE );
+
         PSA_ASSERT( psa_mac_verify_setup( &operation, key, alg ) );
         PSA_ASSERT( psa_mac_update( &operation,
                                     input->x, input->len ) );
@@ -4128,7 +4168,12 @@
 
     for( i = 0; i < ARRAY_LENGTH( steps ); i++ )
     {
-        if( key_types[i] != PSA_KEY_TYPE_NONE )
+        mbedtls_test_set_step( i );
+        if( steps[i] == 0 )
+        {
+            /* Skip this step */
+        }
+        else if( key_types[i] != PSA_KEY_TYPE_NONE )
         {
             psa_set_key_type( &attributes, key_types[i] );
             PSA_ASSERT( psa_import_key( &attributes,
@@ -4187,7 +4232,7 @@
 /* END_CASE */
 
 /* BEGIN_CASE */
-void test_derive_invalid_key_derivation_state( int alg_arg )
+void derive_over_capacity( int alg_arg )
 {
     psa_algorithm_t alg = alg_arg;
     mbedtls_svc_key_id_t key = MBEDTLS_SVC_KEY_ID_INIT;
@@ -4238,7 +4283,7 @@
 /* END_CASE */
 
 /* BEGIN_CASE */
-void test_derive_invalid_key_derivation_tests( )
+void derive_actions_without_setup( )
 {
     uint8_t output_buffer[16];
     size_t buffer_size = 16;
diff --git a/tests/suites/test_suite_psa_crypto_driver_wrappers.function b/tests/suites/test_suite_psa_crypto_driver_wrappers.function
index e86309b..3a9eff9 100644
--- a/tests/suites/test_suite_psa_crypto_driver_wrappers.function
+++ b/tests/suites/test_suite_psa_crypto_driver_wrappers.function
@@ -1118,7 +1118,31 @@
     ASSERT_ALLOC( actual_mac, mac_buffer_size );
     mbedtls_test_driver_mac_hooks.forced_status = forced_status;
 
-    /* Calculate the MAC. */
+    /*
+     * Calculate the MAC, one-shot case.
+     */
+    status = psa_mac_compute( key, alg,
+                              input->x, input->len,
+                              actual_mac, mac_buffer_size,
+                              &mac_length );
+
+    TEST_EQUAL( mbedtls_test_driver_mac_hooks.hits, 1 );
+    if( forced_status == PSA_SUCCESS ||
+        forced_status == PSA_ERROR_NOT_SUPPORTED )
+    {
+        PSA_ASSERT( status );
+    }
+    else
+        TEST_EQUAL( forced_status, status );
+
+    if( mac_buffer_size > 0 )
+        memset( actual_mac, 0, mac_buffer_size );
+    mbedtls_test_driver_mac_hooks = mbedtls_test_driver_mac_hooks_init();
+    mbedtls_test_driver_mac_hooks.forced_status = forced_status;
+
+    /*
+     * Calculate the MAC, multipart case.
+     */
     status = psa_mac_sign_setup( &operation, key, alg );
     TEST_EQUAL( mbedtls_test_driver_mac_hooks.hits, 1 );
 
@@ -1214,7 +1238,27 @@
 
     mbedtls_test_driver_mac_hooks.forced_status = forced_status;
 
-    /* Test the correct MAC. */
+    /*
+     * Verify the MAC, one-shot case.
+     */
+    status = psa_mac_verify( key, alg,
+                             input->x, input->len,
+                             expected_mac->x, expected_mac->len );
+    TEST_EQUAL( mbedtls_test_driver_mac_hooks.hits, 1 );
+    if( forced_status == PSA_SUCCESS ||
+        forced_status == PSA_ERROR_NOT_SUPPORTED )
+    {
+        PSA_ASSERT( status );
+    }
+    else
+        TEST_EQUAL( forced_status, status );
+
+    mbedtls_test_driver_mac_hooks = mbedtls_test_driver_mac_hooks_init();
+    mbedtls_test_driver_mac_hooks.forced_status = forced_status;
+
+    /*
+     * Verify the MAC, multi-part case.
+     */
     status = psa_mac_verify_setup( &operation, key, alg );
     TEST_EQUAL( mbedtls_test_driver_mac_hooks.hits, 1 );
 
diff --git a/tests/suites/test_suite_rsa.data b/tests/suites/test_suite_rsa.data
index 6f9406c..2da814d 100644
--- a/tests/suites/test_suite_rsa.data
+++ b/tests/suites/test_suite_rsa.data
@@ -389,12 +389,18 @@
 RSA Private (Data larger than N)
 mbedtls_rsa_private:"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":2048:16:"e79a373182bfaa722eb035f772ad2a9464bd842de59432c18bbab3a7dfeae318c9b915ee487861ab665a40bd6cda560152578e8579016c929df99fea05b4d64efca1d543850bc8164b40d71ed7f3fa4105df0fb9b9ad2a18ce182c8a4f4f975bea9aa0b9a1438a27a28e97ac8330ef37383414d1bd64607d6979ac050424fd17":16:"c6749cbb0db8c5a177672d4728a8b22392b2fc4d3b8361d5c0d5055a1b4e46d821f757c24eef2a51c561941b93b3ace7340074c058c9bb48e7e7414f42c41da4cccb5c2ba91deb30c586b7fb18af12a52995592ad139d3be429add6547e044becedaf31fa3b39421e24ee034fbf367d11f6b8f88ee483d163b431e1654ad3e89":16:"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":16:"3":"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":MBEDTLS_ERR_RSA_PRIVATE_FAILED + MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
+RSA Private (Data = 0 )
+mbedtls_rsa_private:"00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000":2048:16:"e79a373182bfaa722eb035f772ad2a9464bd842de59432c18bbab3a7dfeae318c9b915ee487861ab665a40bd6cda560152578e8579016c929df99fea05b4d64efca1d543850bc8164b40d71ed7f3fa4105df0fb9b9ad2a18ce182c8a4f4f975bea9aa0b9a1438a27a28e97ac8330ef37383414d1bd64607d6979ac050424fd17":16:"c6749cbb0db8c5a177672d4728a8b22392b2fc4d3b8361d5c0d5055a1b4e46d821f757c24eef2a51c561941b93b3ace7340074c058c9bb48e7e7414f42c41da4cccb5c2ba91deb30c586b7fb18af12a52995592ad139d3be429add6547e044becedaf31fa3b39421e24ee034fbf367d11f6b8f88ee483d163b431e1654ad3e89":16:"b38ac65c8141f7f5c96e14470e851936a67bf94cc6821a39ac12c05f7c0b06d9e6ddba2224703b02e25f31452f9c4a8417b62675fdc6df46b94813bc7b9769a892c482b830bfe0ad42e46668ace68903617faf6681f4babf1cc8e4b0420d3c7f61dc45434c6b54e2c3ee0fc07908509d79c9826e673bf8363255adb0add2401039a7bcd1b4ecf0fbe6ec8369d2da486eec59559dd1d54c9b24190965eafbdab203b35255765261cd0909acf93c3b8b8428cbb448de4715d1b813d0c94829c229543d391ce0adab5351f97a3810c1f73d7b1458b97daed4209c50e16d064d2d5bfda8c23893d755222793146d0a78c3d64f35549141486c3b0961a7b4c1a2034f":16:"3":"00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000":0
+
 RSA Public (Correct)
 mbedtls_rsa_public:"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":2048:16:"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":16:"3":"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":0
 
 RSA Public (Data larger than N)
 mbedtls_rsa_public:"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":2048:16:"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":16:"3":"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":MBEDTLS_ERR_RSA_PUBLIC_FAILED + MBEDTLS_ERR_MPI_BAD_INPUT_DATA
 
+RSA Public (Data = 0)
+mbedtls_rsa_public:"00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000":2048:16:"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":16:"3":"00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000":0
+
 RSA Generate Key - 128bit key
 mbedtls_rsa_gen_key:128:3:0
 
diff --git a/tests/suites/test_suite_rsa.function b/tests/suites/test_suite_rsa.function
index d3d016d..2d7fb8e 100644
--- a/tests/suites/test_suite_rsa.function
+++ b/tests/suites/test_suite_rsa.function
@@ -532,10 +532,10 @@
     memset( output, 0x00, sizeof( output ) );
     memset( &rnd_info, 0, sizeof( mbedtls_test_rnd_pseudo_info ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P, radix_P, input_P ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Q, radix_Q, input_Q ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, &P, &Q, NULL, &E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( mod / 8 ) );
@@ -578,8 +578,8 @@
     mbedtls_rsa_init( &ctx, padding_mode, 0 );
     memset( hash_result, 0x00, sizeof( hash_result ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, NULL, NULL, NULL, &E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( mod / 8 ) );
     TEST_ASSERT( mbedtls_rsa_check_pubkey( &ctx ) == 0 );
@@ -616,10 +616,10 @@
     memset( output, 0x00, sizeof( output ) );
     memset( &rnd_info, 0, sizeof( mbedtls_test_rnd_pseudo_info ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P, radix_P, input_P ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Q, radix_Q, input_Q ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, &P, &Q, NULL, &E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( mod / 8 ) );
@@ -687,8 +687,8 @@
     mbedtls_rsa_init( &ctx, padding_mode, 0 );
     memset( output, 0x00, sizeof( output ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, NULL, NULL, NULL, &E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( mod / 8 ) );
@@ -751,8 +751,8 @@
     mbedtls_rsa_init( &ctx, padding_mode, 0 );
     memset( output, 0x00, sizeof( output ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, NULL, NULL, NULL, &E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( mod / 8 ) );
@@ -792,8 +792,8 @@
     mbedtls_rsa_init( &ctx, padding_mode, 0 );
     memset( output, 0x00, sizeof( output ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, NULL, NULL, NULL, &E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( mod / 8 ) );
@@ -840,10 +840,10 @@
     memset( &rnd_info, 0, sizeof( mbedtls_test_rnd_pseudo_info ) );
 
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P, radix_P, input_P ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Q, radix_Q, input_Q ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, &P, &Q, NULL, &E ) == 0 );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( mod / 8 ) );
@@ -886,14 +886,16 @@
     mbedtls_rsa_init( &ctx2, MBEDTLS_RSA_PKCS_V15, 0 );
     memset( output, 0x00, sizeof( output ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, NULL, NULL, NULL, &E ) == 0 );
+
+    /* Check test data consistency */
+    TEST_ASSERT( message_str->len == (size_t) ( mod / 8 ) );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( mod / 8 ) );
     TEST_ASSERT( mbedtls_rsa_check_pubkey( &ctx ) == 0 );
 
-
     TEST_ASSERT( mbedtls_rsa_public( &ctx, message_str->x, output ) == result );
     if( result == 0 )
     {
@@ -945,17 +947,19 @@
 
     memset( &rnd_info, 0, sizeof( mbedtls_test_rnd_pseudo_info ) );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P, radix_P, input_P ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Q, radix_Q, input_Q ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, &P, &Q, NULL, &E ) == 0 );
+
+    /* Check test data consistency */
+    TEST_ASSERT( message_str->len == (size_t) ( mod / 8 ) );
     TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( mod / 8 ) );
     TEST_ASSERT( mbedtls_rsa_complete( &ctx ) == 0 );
     TEST_ASSERT( mbedtls_rsa_check_privkey( &ctx ) == 0 );
 
-
     /* repeat three times to test updating of blinding values */
     for( i = 0; i < 3; i++ )
     {
@@ -1021,11 +1025,11 @@
 
     if( strlen( input_N ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
     }
     if( strlen( input_E ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
     }
 
     TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, NULL, NULL, NULL, &E ) == 0 );
@@ -1053,36 +1057,36 @@
     ctx.len = mod / 8;
     if( strlen( input_P ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &ctx.P, radix_P, input_P ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &ctx.P, radix_P, input_P ) == 0 );
     }
     if( strlen( input_Q ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &ctx.Q, radix_Q, input_Q ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &ctx.Q, radix_Q, input_Q ) == 0 );
     }
     if( strlen( input_N ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &ctx.N, radix_N, input_N ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &ctx.N, radix_N, input_N ) == 0 );
     }
     if( strlen( input_E ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &ctx.E, radix_E, input_E ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &ctx.E, radix_E, input_E ) == 0 );
     }
     if( strlen( input_D ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &ctx.D, radix_D, input_D ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &ctx.D, radix_D, input_D ) == 0 );
     }
 #if !defined(MBEDTLS_RSA_NO_CRT)
     if( strlen( input_DP ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &ctx.DP, radix_DP, input_DP ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &ctx.DP, radix_DP, input_DP ) == 0 );
     }
     if( strlen( input_DQ ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &ctx.DQ, radix_DQ, input_DQ ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &ctx.DQ, radix_DQ, input_DQ ) == 0 );
     }
     if( strlen( input_QP ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &ctx.QP, radix_QP, input_QP ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &ctx.QP, radix_QP, input_QP ) == 0 );
     }
 #else
     ((void) radix_DP); ((void) input_DP);
@@ -1117,45 +1121,45 @@
 
     if( strlen( input_Npub ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &pub.N, radix_Npub, input_Npub ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &pub.N, radix_Npub, input_Npub ) == 0 );
     }
     if( strlen( input_Epub ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &pub.E, radix_Epub, input_Epub ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &pub.E, radix_Epub, input_Epub ) == 0 );
     }
 
     if( strlen( input_P ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &prv.P, radix_P, input_P ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &prv.P, radix_P, input_P ) == 0 );
     }
     if( strlen( input_Q ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &prv.Q, radix_Q, input_Q ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &prv.Q, radix_Q, input_Q ) == 0 );
     }
     if( strlen( input_N ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &prv.N, radix_N, input_N ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &prv.N, radix_N, input_N ) == 0 );
     }
     if( strlen( input_E ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &prv.E, radix_E, input_E ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &prv.E, radix_E, input_E ) == 0 );
     }
     if( strlen( input_D ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &prv.D, radix_D, input_D ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &prv.D, radix_D, input_D ) == 0 );
     }
 #if !defined(MBEDTLS_RSA_NO_CRT)
     if( strlen( input_DP ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &prv.DP, radix_DP, input_DP ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &prv.DP, radix_DP, input_DP ) == 0 );
     }
     if( strlen( input_DQ ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &prv.DQ, radix_DQ, input_DQ ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &prv.DQ, radix_DQ, input_DQ ) == 0 );
     }
     if( strlen( input_QP ) )
     {
-        TEST_ASSERT( mbedtls_mpi_read_string( &prv.QP, radix_QP, input_QP ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &prv.QP, radix_QP, input_QP ) == 0 );
     }
 #else
     ((void) radix_DP); ((void) input_DP);
@@ -1216,11 +1220,11 @@
     mbedtls_mpi_init( &Pp ); mbedtls_mpi_init( &Qp );
     mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &D, radix_D, input_D ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Qp, radix_P, output_P ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Pp, radix_Q, output_Q ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &D, radix_D, input_D ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Qp, radix_P, output_P ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Pp, radix_Q, output_Q ) == 0 );
 
     if( corrupt )
         TEST_ASSERT( mbedtls_mpi_add_int( &D, &D, 2 ) == 0 );
@@ -1257,10 +1261,10 @@
     mbedtls_mpi_init( &E );
     mbedtls_mpi_init( &R ); mbedtls_mpi_init( &Rp );
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
-    TEST_ASSERT( mbedtls_mpi_read_string( &Dp, radix_D, output_D ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &P, radix_P, input_P ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Q, radix_Q, input_Q ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &Dp, radix_D, output_D ) == 0 );
 
     if( corrupt )
     {
@@ -1343,19 +1347,19 @@
                                 (const unsigned char *) pers, strlen( pers ) ) == 0 );
 
     if( have_N )
-        TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
 
     if( have_P )
-        TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &P, radix_P, input_P ) == 0 );
 
     if( have_Q )
-        TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &Q, radix_Q, input_Q ) == 0 );
 
     if( have_D )
-        TEST_ASSERT( mbedtls_mpi_read_string( &D, radix_D, input_D ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &D, radix_D, input_D ) == 0 );
 
     if( have_E )
-        TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     if( !successive )
     {
@@ -1487,19 +1491,19 @@
     /* Setup RSA context */
 
     if( have_N )
-        TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
 
     if( have_P )
-        TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &P, radix_P, input_P ) == 0 );
 
     if( have_Q )
-        TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &Q, radix_Q, input_Q ) == 0 );
 
     if( have_D )
-        TEST_ASSERT( mbedtls_mpi_read_string( &D, radix_D, input_D ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &D, radix_D, input_D ) == 0 );
 
     if( have_E )
-        TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_rsa_import( &ctx,
                                      strlen( input_N ) ? &N : NULL,
@@ -1607,19 +1611,19 @@
                                         strlen( pers ) ) == 0 );
 
     if( have_N )
-        TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &N, radix_N, input_N ) == 0 );
 
     if( have_P )
-        TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &P, radix_P, input_P ) == 0 );
 
     if( have_Q )
-        TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &Q, radix_Q, input_Q ) == 0 );
 
     if( have_D )
-        TEST_ASSERT( mbedtls_mpi_read_string( &D, radix_D, input_D ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &D, radix_D, input_D ) == 0 );
 
     if( have_E )
-        TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 0 );
+        TEST_ASSERT( mbedtls_test_read_mpi( &E, radix_E, input_E ) == 0 );
 
     TEST_ASSERT( mbedtls_rsa_validate_params( have_N ? &N : NULL,
                                         have_P ? &P : NULL,
diff --git a/tests/suites/test_suite_x509write.function b/tests/suites/test_suite_x509write.function
index 59ea17b..ce475e6 100644
--- a/tests/suites/test_suite_x509write.function
+++ b/tests/suites/test_suite_x509write.function
@@ -246,7 +246,7 @@
     (void) rsa_alt;
 #endif
 
-    TEST_ASSERT( mbedtls_mpi_read_string( &serial, 10, serial_str ) == 0 );
+    TEST_ASSERT( mbedtls_test_read_mpi( &serial, 10, serial_str ) == 0 );
 
     if( ver != -1 )
         mbedtls_x509write_crt_set_version( &crt, ver );