Merge pull request #4513 from Patater/psa-without-genprime-fix
psa: Support RSA signature without MBEDTLS_GENPRIME
diff --git a/ChangeLog.d/psa-without-genprime-fix.txt b/ChangeLog.d/psa-without-genprime-fix.txt
new file mode 100644
index 0000000..8a7153a
--- /dev/null
+++ b/ChangeLog.d/psa-without-genprime-fix.txt
@@ -0,0 +1,5 @@
+Bugfix
+ * Restore the ability to configure PSA via Mbed TLS options to support RSA
+ key pair operations but exclude RSA key generation. When MBEDTLS_GENPRIME
+ is not defined PSA will no longer attempt to use mbedtls_rsa_gen_key().
+ Fixes #4512.
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index db44e3f..3fe2a88 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -4818,7 +4818,8 @@
}
else
-#if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR)
+#if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) && \
+ defined(MBEDTLS_GENPRIME)
if ( type == PSA_KEY_TYPE_RSA_KEY_PAIR )
{
return( mbedtls_psa_rsa_generate_key( attributes,
@@ -4827,7 +4828,8 @@
key_buffer_length ) );
}
else
-#endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) */
+#endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR)
+ * defined(MBEDTLS_GENPRIME) */
#if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR)
if ( PSA_KEY_TYPE_IS_ECC( type ) && PSA_KEY_TYPE_IS_KEY_PAIR( type ) )
diff --git a/library/psa_crypto_rsa.c b/library/psa_crypto_rsa.c
index 10ce30e..b5aec20 100644
--- a/library/psa_crypto_rsa.c
+++ b/library/psa_crypto_rsa.c
@@ -274,7 +274,8 @@
#endif /* defined(BUILTIN_KEY_TYPE_RSA_KEY_PAIR) ||
* defined(BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */
-#if defined(BUILTIN_KEY_TYPE_RSA_KEY_PAIR)
+#if defined(BUILTIN_KEY_TYPE_RSA_KEY_PAIR) && \
+ defined(MBEDTLS_GENPRIME)
static psa_status_t psa_rsa_read_exponent( const uint8_t *domain_parameters,
size_t domain_parameters_size,
int *exponent )
@@ -332,7 +333,8 @@
return( status );
}
-#endif /* defined(BUILTIN_KEY_TYPE_RSA_KEY_PAIR) */
+#endif /* defined(BUILTIN_KEY_TYPE_RSA_KEY_PAIR)
+ * defined(MBEDTLS_GENPRIME) */
/****************************************************************/
/* Sign/verify hashes */
@@ -557,7 +559,8 @@
#endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) ||
* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */
-#if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR)
+#if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) && \
+ defined(MBEDTLS_GENPRIME)
psa_status_t mbedtls_psa_rsa_generate_key(
const psa_key_attributes_t *attributes,
uint8_t *key_buffer, size_t key_buffer_size, size_t *key_buffer_length )
@@ -565,7 +568,8 @@
return( rsa_generate_key( attributes, key_buffer, key_buffer_size,
key_buffer_length ) );
}
-#endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) */
+#endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR)
+ * defined(MBEDTLS_GENPRIME) */
#if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || \
defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS)
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index ef2b636..8e163a9 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -828,6 +828,15 @@
make test
}
+component_test_psa_crypto_rsa_no_genprime() {
+ msg "build: default config minus MBEDTLS_GENPRIME"
+ scripts/config.py unset MBEDTLS_GENPRIME
+ make
+
+ msg "test: default config minus MBEDTLS_GENPRIME"
+ make test
+}
+
component_test_ref_configs () {
msg "test/build: ref-configs (ASan build)" # ~ 6 min 20s
CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
index cb0cb9c..4d9c7b6 100644
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -3369,7 +3369,7 @@
generate_key:PSA_KEY_TYPE_RSA_KEY_PAIR:512:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_RSA_PKCS1V15_CRYPT:PSA_SUCCESS:0
PSA generate key: RSA, 1024 bits, good, encrypt (OAEP SHA-256)
-depends_on:PSA_WANT_ALG_RSA_OAEP:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_MD_C
+depends_on:PSA_WANT_ALG_RSA_OAEP:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_GENPRIME:MBEDTLS_MD_C
generate_key:PSA_KEY_TYPE_RSA_KEY_PAIR:1024:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_RSA_OAEP(PSA_ALG_SHA_256):PSA_SUCCESS:0
PSA generate key: RSA, 0 bits: invalid