diff --git a/ChangeLog.d/chunked_ccm.txt b/ChangeLog.d/chunked_ccm.txt
new file mode 100644
index 0000000..67faecc
--- /dev/null
+++ b/ChangeLog.d/chunked_ccm.txt
@@ -0,0 +1,8 @@
+Changes
+   * Implement multi-part CCM API.
+     The multi-part functions: mbedtls_ccm_starts(), mbedtls_ccm_set_lengths(),
+     mbedtls_ccm_update_ad(), mbedtls_ccm_update(), mbedtls_ccm_finish()
+     were introduced in mbedTLS 3.0 release, however their implementation was
+     postponed until now.
+     Implemented functions support chunked data input for both CCM and CCM*
+     algorithms.
diff --git a/ChangeLog.d/do-not-use-obsolete-header.txt b/ChangeLog.d/do-not-use-obsolete-header.txt
new file mode 100644
index 0000000..9a57ef1
--- /dev/null
+++ b/ChangeLog.d/do-not-use-obsolete-header.txt
@@ -0,0 +1,5 @@
+Bugfix
+   * Don't use the obsolete header path sys/fcntl.h in unit tests.
+     These header files cause compilation errors in musl.
+     Fixes #4969.
+
diff --git a/include/mbedtls/ccm.h b/include/mbedtls/ccm.h
index b3adecc..6f991fe 100644
--- a/include/mbedtls/ccm.h
+++ b/include/mbedtls/ccm.h
@@ -76,7 +76,27 @@
  */
 typedef struct mbedtls_ccm_context
 {
+    unsigned char MBEDTLS_PRIVATE(y)[16];    /*!< The Y working buffer */
+    unsigned char MBEDTLS_PRIVATE(ctr)[16];  /*!< The counter buffer */
     mbedtls_cipher_context_t MBEDTLS_PRIVATE(cipher_ctx);    /*!< The cipher context used. */
+    size_t MBEDTLS_PRIVATE(plaintext_len);   /*!< Total plaintext length */
+    size_t MBEDTLS_PRIVATE(add_len);         /*!< Total authentication data length */
+    size_t MBEDTLS_PRIVATE(tag_len);         /*!< Total tag length */
+    size_t MBEDTLS_PRIVATE(processed);       /*!< Track how many bytes of input data
+                                                  were processed (chunked input).
+                                                  Used independently for both auth data
+                                                  and plaintext/ciphertext.
+                                                  This variable is set to zero after
+                                                  auth data input is finished. */
+    unsigned char MBEDTLS_PRIVATE(q);        /*!< The Q working value */
+    unsigned char MBEDTLS_PRIVATE(mode);     /*!< The operation to perform:
+                                                  #MBEDTLS_CCM_ENCRYPT or
+                                                  #MBEDTLS_CCM_DECRYPT or
+                                                  #MBEDTLS_CCM_STAR_ENCRYPT or
+                                                  #MBEDTLS_CCM_STAR_DECRYPT. */
+    int MBEDTLS_PRIVATE(state);              /*!< Working value holding context's
+                                                  state. Used for chunked data
+                                                  input */
 }
 mbedtls_ccm_context;
 
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index f533859..725b156 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -170,6 +170,37 @@
 #define MBEDTLS_ERR_SSL_BAD_CONFIG                        -0x5E80
 
 /*
+ * TLS 1.3 NamedGroup values
+ *
+ * From RF 8446
+ *    enum {
+ *         // Elliptic Curve Groups (ECDHE)
+ *         secp256r1(0x0017), secp384r1(0x0018), secp521r1(0x0019),
+ *         x25519(0x001D), x448(0x001E),
+ *         // Finite Field Groups (DHE)
+ *         ffdhe2048(0x0100), ffdhe3072(0x0101), ffdhe4096(0x0102),
+ *         ffdhe6144(0x0103), ffdhe8192(0x0104),
+ *         // Reserved Code Points
+ *         ffdhe_private_use(0x01FC..0x01FF),
+ *         ecdhe_private_use(0xFE00..0xFEFF),
+ *         (0xFFFF)
+ *     } NamedGroup;
+ *
+ */
+/* Elliptic Curve Groups (ECDHE) */
+#define MBEDTLS_SSL_TLS13_NAMED_GROUP_SECP256R1     0x0017
+#define MBEDTLS_SSL_TLS13_NAMED_GROUP_SECP384R1     0x0018
+#define MBEDTLS_SSL_TLS13_NAMED_GROUP_SECP521R1     0x0019
+#define MBEDTLS_SSL_TLS13_NAMED_GROUP_X25519        0x001D
+#define MBEDTLS_SSL_TLS13_NAMED_GROUP_X448          0x001E
+/* Finite Field Groups (DHE) */
+#define MBEDTLS_SSL_TLS13_NAMED_GROUP_FFDHE2048     0x0100
+#define MBEDTLS_SSL_TLS13_NAMED_GROUP_FFDHE3072     0x0101
+#define MBEDTLS_SSL_TLS13_NAMED_GROUP_FFDHE4096     0x0102
+#define MBEDTLS_SSL_TLS13_NAMED_GROUP_FFDHE6144     0x0103
+#define MBEDTLS_SSL_TLS13_NAMED_GROUP_FFDHE8192     0x0104
+
+/*
  * TLS 1.3 Key Exchange Modes
  *
  * Mbed TLS internal identifiers for use with the SSL configuration API
diff --git a/library/ccm.c b/library/ccm.c
index a21a37f..15efff7 100644
--- a/library/ccm.c
+++ b/library/ccm.c
@@ -36,31 +36,23 @@
 
 #include <string.h>
 
-#if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
 #if defined(MBEDTLS_PLATFORM_C)
 #include "mbedtls/platform.h"
 #else
+#if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
 #include <stdio.h>
 #define mbedtls_printf printf
-#endif /* MBEDTLS_PLATFORM_C */
 #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
+#endif /* MBEDTLS_PLATFORM_C */
 
 #if !defined(MBEDTLS_CCM_ALT)
 
-#define CCM_VALIDATE_RET( cond ) \
-    MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_CCM_BAD_INPUT )
-#define CCM_VALIDATE( cond ) \
-    MBEDTLS_INTERNAL_VALIDATE( cond )
-
-#define CCM_ENCRYPT 0
-#define CCM_DECRYPT 1
 
 /*
  * Initialize context
  */
 void mbedtls_ccm_init( mbedtls_ccm_context *ctx )
 {
-    CCM_VALIDATE( ctx != NULL );
     memset( ctx, 0, sizeof( mbedtls_ccm_context ) );
 }
 
@@ -72,9 +64,6 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     const mbedtls_cipher_info_t *cipher_info;
 
-    CCM_VALIDATE_RET( ctx != NULL );
-    CCM_VALIDATE_RET( key != NULL );
-
     cipher_info = mbedtls_cipher_info_from_values( cipher, keybits,
                                                    MBEDTLS_MODE_ECB );
     if( cipher_info == NULL )
@@ -108,82 +97,67 @@
     mbedtls_platform_zeroize( ctx, sizeof( mbedtls_ccm_context ) );
 }
 
-/*
- * Macros for common operations.
- * Results in smaller compiled code than static inline functions.
- */
-
-/*
- * Update the CBC-MAC state in y using a block in b
- * (Always using b as the source helps the compiler optimise a bit better.)
- */
-#define UPDATE_CBC_MAC                                                      \
-    for( i = 0; i < 16; i++ )                                               \
-        y[i] ^= b[i];                                                       \
-                                                                            \
-    if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, y, 16, y, &olen ) ) != 0 ) \
-        return( ret );
+#define CCM_STATE__CLEAR                0
+#define CCM_STATE__STARTED              (1 << 0)
+#define CCM_STATE__LENGHTS_SET          (1 << 1)
+#define CCM_STATE__AUTH_DATA_STARTED    (1 << 2)
+#define CCM_STATE__AUTH_DATA_FINISHED   (1 << 3)
+#define CCM_STATE__ERROR                (1 << 4)
 
 /*
  * Encrypt or decrypt a partial block with CTR
- * Warning: using b for temporary storage! src and dst must not be b!
- * This avoids allocating one more 16 bytes buffer while allowing src == dst.
  */
-#define CTR_CRYPT( dst, src, len  )                                            \
-    do                                                                  \
-    {                                                                   \
-        if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctr,       \
-                                           16, b, &olen ) ) != 0 )      \
-        {                                                               \
-            return( ret );                                              \
-        }                                                               \
-                                                                        \
-        for( i = 0; i < (len); i++ )                                    \
-            (dst)[i] = (src)[i] ^ b[i];                                 \
-    } while( 0 )
+static int mbedtls_ccm_crypt( mbedtls_ccm_context *ctx,
+                              size_t offset, size_t use_len,
+                              const unsigned char *input,
+                              unsigned char *output )
+{
+    size_t i;
+    size_t olen = 0;
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    unsigned char tmp_buf[16] = {0};
 
-/*
- * Authenticated encryption or decryption
- */
-static int ccm_auth_crypt( mbedtls_ccm_context *ctx, int mode, size_t length,
-                           const unsigned char *iv, size_t iv_len,
-                           const unsigned char *add, size_t add_len,
-                           const unsigned char *input, unsigned char *output,
-                           unsigned char *tag, size_t tag_len )
+    if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->ctr, 16, tmp_buf,
+                                       &olen ) ) != 0 )
+    {
+        ctx->state |= CCM_STATE__ERROR;
+        mbedtls_platform_zeroize(tmp_buf, sizeof(tmp_buf));
+        return ret;
+    }
+
+    for( i = 0; i < use_len; i++ )
+        output[i] = input[i] ^ tmp_buf[offset + i];
+
+    mbedtls_platform_zeroize(tmp_buf, sizeof(tmp_buf));
+    return ret;
+}
+
+static void mbedtls_ccm_clear_state(mbedtls_ccm_context *ctx) {
+    ctx->state = CCM_STATE__CLEAR;
+    memset( ctx->y, 0, 16);
+    memset( ctx->ctr, 0, 16);
+}
+
+static int ccm_calculate_first_block_if_ready(mbedtls_ccm_context *ctx)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char i;
-    unsigned char q;
     size_t len_left, olen;
-    unsigned char b[16];
-    unsigned char y[16];
-    unsigned char ctr[16];
-    const unsigned char *src;
-    unsigned char *dst;
 
-    /*
-     * Check length requirements: SP800-38C A.1
-     * Additional requirement: a < 2^16 - 2^8 to simplify the code.
-     * 'length' checked later (when writing it to the first block)
-     *
-     * Also, loosen the requirements to enable support for CCM* (IEEE 802.15.4).
+    /* length calulcation can be done only after both
+     * mbedtls_ccm_starts() and mbedtls_ccm_set_lengths() have been executed
      */
-    if( tag_len == 2 || tag_len > 16 || tag_len % 2 != 0 )
-        return( MBEDTLS_ERR_CCM_BAD_INPUT );
+    if( !(ctx->state & CCM_STATE__STARTED) || !(ctx->state & CCM_STATE__LENGHTS_SET) )
+        return 0;
 
-    /* Also implies q is within bounds */
-    if( iv_len < 7 || iv_len > 13 )
+    if( ctx->tag_len == 0 && \
+        ( ctx->mode == MBEDTLS_CCM_ENCRYPT || ctx->mode == MBEDTLS_CCM_DECRYPT ) )
         return( MBEDTLS_ERR_CCM_BAD_INPUT );
 
-    if( add_len >= 0xFF00 )
-        return( MBEDTLS_ERR_CCM_BAD_INPUT );
-
-    q = 16 - 1 - (unsigned char) iv_len;
-
     /*
-     * First block B_0:
+     * First block:
      * 0        .. 0        flags
-     * 1        .. iv_len   nonce (aka iv)
+     * 1        .. iv_len   nonce (aka iv)  - set by: mbedtls_ccm_starts()
      * iv_len+1 .. 15       length
      *
      * With flags as (bits):
@@ -192,56 +166,40 @@
      * 5 .. 3   (t - 2) / 2
      * 2 .. 0   q - 1
      */
-    b[0] = 0;
-    b[0] |= ( add_len > 0 ) << 6;
-    b[0] |= ( ( tag_len - 2 ) / 2 ) << 3;
-    b[0] |= q - 1;
+    ctx->y[0] |= ( ctx->add_len > 0 ) << 6;
+    ctx->y[0] |= ( ( ctx->tag_len - 2 ) / 2 ) << 3;
+    ctx->y[0] |= ctx->q - 1;
 
-    memcpy( b + 1, iv, iv_len );
-
-    for( i = 0, len_left = length; i < q; i++, len_left >>= 8 )
-        b[15-i] = MBEDTLS_BYTE_0( len_left );
+    for( i = 0, len_left = ctx->plaintext_len; i < ctx->q; i++, len_left >>= 8 )
+        ctx->y[15-i] = MBEDTLS_BYTE_0( len_left );
 
     if( len_left > 0 )
+    {
+        ctx->state |= CCM_STATE__ERROR;
+        return( MBEDTLS_ERR_CCM_BAD_INPUT );
+    }
+
+    /* Start CBC-MAC with first block*/
+    if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ctx->y, &olen ) ) != 0 )
+    {
+        ctx->state |= CCM_STATE__ERROR;
+        return( ret );
+    }
+
+    return (0);
+}
+
+int mbedtls_ccm_starts( mbedtls_ccm_context *ctx,
+                        int mode,
+                        const unsigned char *iv,
+                        size_t iv_len )
+{
+    /* Also implies q is within bounds */
+    if( iv_len < 7 || iv_len > 13 )
         return( MBEDTLS_ERR_CCM_BAD_INPUT );
 
-
-    /* Start CBC-MAC with first block */
-    memset( y, 0, 16 );
-    UPDATE_CBC_MAC;
-
-    /*
-     * If there is additional data, update CBC-MAC with
-     * add_len, add, 0 (padding to a block boundary)
-     */
-    if( add_len > 0 )
-    {
-        size_t use_len;
-        len_left = add_len;
-        src = add;
-
-        memset( b, 0, 16 );
-        MBEDTLS_PUT_UINT16_BE( add_len, b, 0 );
-
-        use_len = len_left < 16 - 2 ? len_left : 16 - 2;
-        memcpy( b + 2, src, use_len );
-        len_left -= use_len;
-        src += use_len;
-
-        UPDATE_CBC_MAC;
-
-        while( len_left > 0 )
-        {
-            use_len = len_left > 16 ? 16 : len_left;
-
-            memset( b, 0, 16 );
-            memcpy( b, src, use_len );
-            UPDATE_CBC_MAC;
-
-            len_left -= use_len;
-            src += use_len;
-        }
-    }
+    ctx->mode = mode;
+    ctx->q = 16 - 1 - (unsigned char) iv_len;
 
     /*
      * Prepare counter block for encryption:
@@ -253,62 +211,290 @@
      * 7 .. 3   0
      * 2 .. 0   q - 1
      */
-    ctr[0] = q - 1;
-    memcpy( ctr + 1, iv, iv_len );
-    memset( ctr + 1 + iv_len, 0, q );
-    ctr[15] = 1;
+    memset( ctx->ctr, 0, 16);
+    ctx->ctr[0] = ctx->q - 1;
+    memcpy( ctx->ctr + 1, iv, iv_len );
+    memset( ctx->ctr + 1 + iv_len, 0, ctx->q );
+    ctx->ctr[15] = 1;
 
     /*
-     * Authenticate and {en,de}crypt the message.
-     *
-     * The only difference between encryption and decryption is
-     * the respective order of authentication and {en,de}cryption.
+     * See ccm_calculate_first_block_if_ready() for block layout description
      */
-    len_left = length;
-    src = input;
-    dst = output;
+    memcpy( ctx->y + 1, iv, iv_len );
 
-    while( len_left > 0 )
+    ctx->state |= CCM_STATE__STARTED;
+    return ccm_calculate_first_block_if_ready(ctx);
+}
+
+int mbedtls_ccm_set_lengths( mbedtls_ccm_context *ctx,
+                             size_t total_ad_len,
+                             size_t plaintext_len,
+                             size_t tag_len )
+{
+    /*
+     * Check length requirements: SP800-38C A.1
+     * Additional requirement: a < 2^16 - 2^8 to simplify the code.
+     * 'length' checked later (when writing it to the first block)
+     *
+     * Also, loosen the requirements to enable support for CCM* (IEEE 802.15.4).
+     */
+    if( tag_len == 2 || tag_len > 16 || tag_len % 2 != 0 )
+        return( MBEDTLS_ERR_CCM_BAD_INPUT );
+
+    if( total_ad_len >= 0xFF00 )
+        return( MBEDTLS_ERR_CCM_BAD_INPUT );
+
+    ctx->plaintext_len = plaintext_len;
+    ctx->add_len = total_ad_len;
+    ctx->tag_len = tag_len;
+    ctx->processed = 0;
+
+    ctx->state |= CCM_STATE__LENGHTS_SET;
+    return ccm_calculate_first_block_if_ready(ctx);
+}
+
+int mbedtls_ccm_update_ad( mbedtls_ccm_context *ctx,
+                           const unsigned char *add,
+                           size_t add_len )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    unsigned char i;
+    size_t olen, use_len, offset;
+
+    if( ctx->state & CCM_STATE__ERROR )
     {
-        size_t use_len = len_left > 16 ? 16 : len_left;
+        return MBEDTLS_ERR_CCM_BAD_INPUT;
+    }
 
-        if( mode == CCM_ENCRYPT )
+    if( add_len > 0 )
+    {
+        if( ctx->state & CCM_STATE__AUTH_DATA_FINISHED )
         {
-            memset( b, 0, 16 );
-            memcpy( b, src, use_len );
-            UPDATE_CBC_MAC;
+            return MBEDTLS_ERR_CCM_BAD_INPUT;
         }
 
-        CTR_CRYPT( dst, src, use_len );
-
-        if( mode == CCM_DECRYPT )
+        if( !(ctx->state & CCM_STATE__AUTH_DATA_STARTED) )
         {
-            memset( b, 0, 16 );
-            memcpy( b, dst, use_len );
-            UPDATE_CBC_MAC;
+            if ( add_len > ctx->add_len )
+            {
+                return MBEDTLS_ERR_CCM_BAD_INPUT;
+            }
+
+            ctx->y[0] ^= (unsigned char)( ( ctx->add_len >> 8 ) & 0xFF );
+            ctx->y[1] ^= (unsigned char)( ( ctx->add_len      ) & 0xFF );
+
+            ctx->state |= CCM_STATE__AUTH_DATA_STARTED;
+        }
+        else if ( ctx->processed + add_len > ctx->add_len )
+        {
+            return MBEDTLS_ERR_CCM_BAD_INPUT;
         }
 
-        dst += use_len;
-        src += use_len;
-        len_left -= use_len;
+        while( add_len > 0 )
+        {
+            offset = (ctx->processed + 2) % 16; /* account for y[0] and y[1]
+                                                 * holding total auth data length */
+            use_len = 16 - offset;
 
-        /*
-         * Increment counter.
-         * No need to check for overflow thanks to the length check above.
-         */
-        for( i = 0; i < q; i++ )
-            if( ++ctr[15-i] != 0 )
+            if( use_len > add_len )
+                use_len = add_len;
+
+            for( i = 0; i < use_len; i++ )
+                ctx->y[i + offset] ^= add[i];
+
+            ctx->processed += use_len;
+            add_len -= use_len;
+            add += use_len;
+
+            if( use_len + offset == 16 || ctx->processed == ctx->add_len )
+            {
+                if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ctx->y, &olen ) ) != 0 )
+                {
+                    ctx->state |= CCM_STATE__ERROR;
+                    return( ret );
+                }
+            }
+        }
+
+        if( ctx->processed == ctx->add_len )
+        {
+            ctx->state |= CCM_STATE__AUTH_DATA_FINISHED;
+            ctx->processed = 0; // prepare for mbedtls_ccm_update()
+        }
+    }
+
+    return (0);
+}
+
+int mbedtls_ccm_update( mbedtls_ccm_context *ctx,
+                        const unsigned char *input, size_t input_len,
+                        unsigned char *output, size_t output_size,
+                        size_t *output_len )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    unsigned char i;
+    size_t use_len, offset, olen;
+
+    unsigned char local_output[16];
+
+    if( ctx->state & CCM_STATE__ERROR )
+    {
+        return MBEDTLS_ERR_CCM_BAD_INPUT;
+    }
+
+    if( ctx->processed + input_len > ctx->plaintext_len )
+    {
+        return MBEDTLS_ERR_CCM_BAD_INPUT;
+    }
+
+    if( output_size < input_len )
+        return( MBEDTLS_ERR_CCM_BAD_INPUT );
+    *output_len = input_len;
+
+    ret = 0;
+
+    while ( input_len > 0 )
+    {
+        offset = ctx->processed % 16;
+
+        use_len = 16 - offset;
+
+        if( use_len > input_len )
+            use_len = input_len;
+
+        ctx->processed += use_len;
+
+        if( ctx->mode == MBEDTLS_CCM_ENCRYPT || \
+            ctx->mode == MBEDTLS_CCM_STAR_ENCRYPT )
+        {
+            for( i = 0; i < use_len; i++ )
+                ctx->y[i + offset] ^= input[i];
+
+            if( use_len + offset == 16 || ctx->processed == ctx->plaintext_len )
+            {
+                if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ctx->y, &olen ) ) != 0 )
+                {
+                    ctx->state |= CCM_STATE__ERROR;
+                    goto exit;
+                }
+            }
+
+            ret = mbedtls_ccm_crypt( ctx, offset, use_len, input, output );
+            if( ret != 0 )
+                goto exit;
+        }
+
+        if( ctx->mode == MBEDTLS_CCM_DECRYPT || \
+            ctx->mode == MBEDTLS_CCM_STAR_DECRYPT )
+        {
+            /* Since output may be in shared memory, we cannot be sure that
+             * it will contain what we wrote to it. Therefore, we should avoid using
+             * it as input to any operations.
+             * Write decrypted data to local_output to avoid using output variable as
+             * input in the XOR operation for Y.
+             */
+            ret = mbedtls_ccm_crypt( ctx, offset, use_len, input, local_output );
+            if( ret != 0 )
+                goto exit;
+
+            for( i = 0; i < use_len; i++ )
+                ctx->y[i + offset] ^= local_output[i];
+
+            memcpy( output, local_output, use_len );
+            mbedtls_platform_zeroize( local_output, 16 );
+
+            if( use_len + offset == 16 || ctx->processed == ctx->plaintext_len )
+            {
+                if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ctx->y, &olen ) ) != 0 )
+                {
+                    ctx->state |= CCM_STATE__ERROR;
+                    goto exit;
+                }
+            }
+        }
+
+        if( use_len + offset == 16 || ctx->processed == ctx->plaintext_len )
+        {
+            for( i = 0; i < ctx->q; i++ )
+            if( ++(ctx->ctr)[15-i] != 0 )
                 break;
+        }
+
+        input_len -= use_len;
+        input += use_len;
+        output += use_len;
+    }
+
+exit:
+    mbedtls_platform_zeroize( local_output, 16 );
+
+    return ret;
+}
+
+int mbedtls_ccm_finish( mbedtls_ccm_context *ctx,
+                        unsigned char *tag, size_t tag_len )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    unsigned char i;
+
+    if( ctx->state & CCM_STATE__ERROR )
+    {
+        return MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    }
+
+    if( ctx->add_len > 0 && !( ctx->state & CCM_STATE__AUTH_DATA_FINISHED ) )
+    {
+        return MBEDTLS_ERR_CCM_BAD_INPUT;
+    }
+
+    if( ctx->plaintext_len > 0 && ctx->processed != ctx->plaintext_len )
+    {
+        return MBEDTLS_ERR_CCM_BAD_INPUT;
     }
 
     /*
      * Authentication: reset counter and crypt/mask internal tag
      */
-    for( i = 0; i < q; i++ )
-        ctr[15-i] = 0;
+    for( i = 0; i < ctx->q; i++ )
+        ctx->ctr[15-i] = 0;
 
-    CTR_CRYPT( y, y, 16 );
-    memcpy( tag, y, tag_len );
+    ret = mbedtls_ccm_crypt( ctx, 0, 16, ctx->y, ctx->y );
+    if( ret != 0 )
+        return ret;
+    if( tag != NULL )
+        memcpy( tag, ctx->y, tag_len );
+    mbedtls_ccm_clear_state(ctx);
+
+    return( 0 );
+}
+
+/*
+ * Authenticated encryption or decryption
+ */
+static int ccm_auth_crypt( mbedtls_ccm_context *ctx, int mode, size_t length,
+                           const unsigned char *iv, size_t iv_len,
+                           const unsigned char *add, size_t add_len,
+                           const unsigned char *input, unsigned char *output,
+                           unsigned char *tag, size_t tag_len )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    size_t olen;
+
+    if( ( ret = mbedtls_ccm_starts( ctx, mode, iv, iv_len ) ) != 0 )
+        return( ret );
+
+    if( ( ret = mbedtls_ccm_set_lengths( ctx, add_len, length, tag_len ) ) != 0 )
+        return( ret );
+
+    if( ( ret = mbedtls_ccm_update_ad( ctx, add, add_len ) ) != 0 )
+        return( ret );
+
+    if( ( ret = mbedtls_ccm_update( ctx, input, length,
+                                    output, length, &olen ) ) != 0 )
+        return( ret );
+
+    if( ( ret = mbedtls_ccm_finish( ctx, tag, tag_len ) ) != 0 )
+        return( ret );
 
     return( 0 );
 }
@@ -322,13 +508,7 @@
                          const unsigned char *input, unsigned char *output,
                          unsigned char *tag, size_t tag_len )
 {
-    CCM_VALIDATE_RET( ctx != NULL );
-    CCM_VALIDATE_RET( iv != NULL );
-    CCM_VALIDATE_RET( add_len == 0 || add != NULL );
-    CCM_VALIDATE_RET( length == 0 || input != NULL );
-    CCM_VALIDATE_RET( length == 0 || output != NULL );
-    CCM_VALIDATE_RET( tag_len == 0 || tag != NULL );
-    return( ccm_auth_crypt( ctx, CCM_ENCRYPT, length, iv, iv_len,
+    return( ccm_auth_crypt( ctx, MBEDTLS_CCM_STAR_ENCRYPT, length, iv, iv_len,
                             add, add_len, input, output, tag, tag_len ) );
 }
 
@@ -338,78 +518,75 @@
                          const unsigned char *input, unsigned char *output,
                          unsigned char *tag, size_t tag_len )
 {
-    CCM_VALIDATE_RET( ctx != NULL );
-    CCM_VALIDATE_RET( iv != NULL );
-    CCM_VALIDATE_RET( add_len == 0 || add != NULL );
-    CCM_VALIDATE_RET( length == 0 || input != NULL );
-    CCM_VALIDATE_RET( length == 0 || output != NULL );
-    CCM_VALIDATE_RET( tag_len == 0 || tag != NULL );
-    if( tag_len == 0 )
-        return( MBEDTLS_ERR_CCM_BAD_INPUT );
-
-    return( mbedtls_ccm_star_encrypt_and_tag( ctx, length, iv, iv_len, add,
-                add_len, input, output, tag, tag_len ) );
+    return( ccm_auth_crypt( ctx, MBEDTLS_CCM_ENCRYPT, length, iv, iv_len,
+                            add, add_len, input, output, tag, tag_len ) );
 }
 
 /*
  * Authenticated decryption
  */
-int mbedtls_ccm_star_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
-                      const unsigned char *iv, size_t iv_len,
-                      const unsigned char *add, size_t add_len,
-                      const unsigned char *input, unsigned char *output,
-                      const unsigned char *tag, size_t tag_len )
+static int mbedtls_ccm_compare_tags(const unsigned char *tag1, const unsigned char *tag2, size_t tag_len)
 {
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    unsigned char check_tag[16];
     unsigned char i;
     int diff;
 
-    CCM_VALIDATE_RET( ctx != NULL );
-    CCM_VALIDATE_RET( iv != NULL );
-    CCM_VALIDATE_RET( add_len == 0 || add != NULL );
-    CCM_VALIDATE_RET( length == 0 || input != NULL );
-    CCM_VALIDATE_RET( length == 0 || output != NULL );
-    CCM_VALIDATE_RET( tag_len == 0 || tag != NULL );
+    /* Check tag in "constant-time" */
+    for( diff = 0, i = 0; i < tag_len; i++ )
+        diff |= tag1[i] ^ tag2[i];
 
-    if( ( ret = ccm_auth_crypt( ctx, CCM_DECRYPT, length,
+    if( diff != 0 )
+    {
+        return( MBEDTLS_ERR_CCM_AUTH_FAILED );
+    }
+
+    return( 0 );
+}
+
+static int ccm_auth_decrypt( mbedtls_ccm_context *ctx, int mode, size_t length,
+                             const unsigned char *iv, size_t iv_len,
+                             const unsigned char *add, size_t add_len,
+                             const unsigned char *input, unsigned char *output,
+                             const unsigned char *tag, size_t tag_len )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    unsigned char check_tag[16];
+
+    if( ( ret = ccm_auth_crypt( ctx, mode, length,
                                 iv, iv_len, add, add_len,
                                 input, output, check_tag, tag_len ) ) != 0 )
     {
         return( ret );
     }
 
-    /* Check tag in "constant-time" */
-    for( diff = 0, i = 0; i < tag_len; i++ )
-        diff |= tag[i] ^ check_tag[i];
-
-    if( diff != 0 )
+    if( ( ret = mbedtls_ccm_compare_tags( tag, check_tag, tag_len ) ) != 0 )
     {
         mbedtls_platform_zeroize( output, length );
-        return( MBEDTLS_ERR_CCM_AUTH_FAILED );
+        return( ret );
     }
 
     return( 0 );
 }
 
+int mbedtls_ccm_star_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
+                      const unsigned char *iv, size_t iv_len,
+                      const unsigned char *add, size_t add_len,
+                      const unsigned char *input, unsigned char *output,
+                      const unsigned char *tag, size_t tag_len )
+{
+    return ccm_auth_decrypt( ctx, MBEDTLS_CCM_STAR_DECRYPT, length,
+                             iv, iv_len, add, add_len,
+                             input, output, tag, tag_len );
+}
+
 int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
                       const unsigned char *iv, size_t iv_len,
                       const unsigned char *add, size_t add_len,
                       const unsigned char *input, unsigned char *output,
                       const unsigned char *tag, size_t tag_len )
 {
-    CCM_VALIDATE_RET( ctx != NULL );
-    CCM_VALIDATE_RET( iv != NULL );
-    CCM_VALIDATE_RET( add_len == 0 || add != NULL );
-    CCM_VALIDATE_RET( length == 0 || input != NULL );
-    CCM_VALIDATE_RET( length == 0 || output != NULL );
-    CCM_VALIDATE_RET( tag_len == 0 || tag != NULL );
-
-    if( tag_len == 0 )
-        return( MBEDTLS_ERR_CCM_BAD_INPUT );
-
-    return( mbedtls_ccm_star_auth_decrypt( ctx, length, iv, iv_len, add,
-                add_len, input, output, tag, tag_len ) );
+    return ccm_auth_decrypt( ctx, MBEDTLS_CCM_DECRYPT, length,
+                             iv, iv_len, add, add_len,
+                             input, output, tag, tag_len );
 }
 #endif /* !MBEDTLS_CCM_ALT */
 
diff --git a/library/ecdh.c b/library/ecdh.c
index 9dfa868..b72bd1f 100644
--- a/library/ecdh.c
+++ b/library/ecdh.c
@@ -32,6 +32,8 @@
 #include "mbedtls/platform_util.h"
 #include "mbedtls/error.h"
 
+#include "ecdh_misc.h"
+
 #include <string.h>
 
 /* Parameter validation macros based on platform_util.h */
@@ -726,4 +728,84 @@
 #endif
 }
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+
+static int ecdh_tls13_make_params_internal( mbedtls_ecdh_context_mbed *ctx,
+                size_t *olen, int point_format, unsigned char *buf, size_t blen,
+                int ( *f_rng )( void *, unsigned char *, size_t), void *p_rng )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+
+    if( ctx->grp.pbits == 0 )
+        return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
+
+    if( ( ret = mbedtls_ecdh_gen_public( &ctx->grp, &ctx->d, &ctx->Q,
+                                         f_rng, p_rng ) ) != 0 )
+        return( ret );
+
+    ret = mbedtls_ecp_point_write_binary( &ctx->grp, &ctx->Q, point_format,
+                                          olen, buf, blen );
+    if( ret != 0 )
+        return( ret );
+
+    return( 0 );
+}
+
+int mbedtls_ecdh_tls13_make_params( mbedtls_ecdh_context *ctx, size_t *olen,
+                            unsigned char *buf, size_t blen,
+                            int ( *f_rng )( void *, unsigned char *, size_t ),
+                            void *p_rng )
+{
+    ECDH_VALIDATE_RET( ctx != NULL );
+    ECDH_VALIDATE_RET( olen != NULL );
+    ECDH_VALIDATE_RET( buf != NULL );
+    ECDH_VALIDATE_RET( f_rng != NULL );
+
+
+#if defined(MBEDTLS_ECP_RESTARTABLE)
+    if( ctx-> restart_enabled )
+        return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE );
+#endif
+
+#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
+    return( ecdh_tls13_make_params_internal( ctx, olen, ctx->point_format,
+                                             buf, blen, f_rng, p_rng ) );
+#else
+    switch( ctx->var )
+    {
+#if defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
+        case MBEDTLS_ECDH_VARIANT_EVEREST:
+            return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE );
+#endif
+        case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0:
+            return( ecdh_tls13_make_params_internal( &ctx->ctx.mbed_ecdh, olen,
+                                               ctx->point_format, buf, blen,
+                                               f_rng, p_rng ) );
+        default:
+            return MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
+    }
+#endif
+}
+
+/*
+ * Setup context without Everest
+ */
+int mbedtls_ecdh_setup_no_everest( mbedtls_ecdh_context *ctx,
+                                   mbedtls_ecp_group_id grp_id )
+{
+    ECDH_VALIDATE_RET( ctx != NULL );
+
+#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
+    return( ecdh_setup_internal( ctx, grp_id ) );
+#else
+    ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED;
+    ctx->var = MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0;
+    ctx->grp_id = grp_id;
+    ecdh_init_internal( &ctx->ctx.mbed_ecdh );
+    return( ecdh_setup_internal( &ctx->ctx.mbed_ecdh, grp_id ) );
+#endif
+}
+
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+
 #endif /* MBEDTLS_ECDH_C */
diff --git a/library/ecdh_misc.h b/library/ecdh_misc.h
new file mode 100644
index 0000000..d1342f8
--- /dev/null
+++ b/library/ecdh_misc.h
@@ -0,0 +1,51 @@
+/**
+ * \file ecdh_misc.h
+ *
+ * \brief Internal functions shared by the ECDH module
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 ( the "License" ); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+#if !defined(MBEDTLS_ECDH_MISC_H)
+#define MBEDTLS_ECDH_MISC_H
+
+#include "mbedtls/ecdh.h"
+#include "mbedtls/ecp.h"
+
+#if defined(MBEDTLS_ECDH_C)
+
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+
+/*
+ * Setup context without Everest
+ */
+int mbedtls_ecdh_setup_no_everest( mbedtls_ecdh_context *ctx,
+                                   mbedtls_ecp_group_id grp_id );
+
+/*
+ * TLS 1.3 version of mbedtls_ecdh_make_params in ecdh.h
+ */
+int mbedtls_ecdh_tls13_make_params( mbedtls_ecdh_context *ctx, size_t *olen,
+                                    unsigned char *buf, size_t blen,
+                                    int ( *f_rng )( void *, unsigned char *, size_t ),
+                                    void *p_rng );
+
+
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+
+#endif /* MBEDTLS_ECDH_C */
+
+#endif /* !MBEDTLS_ECDH_MISC_H */
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 7035c27..c338d79 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -649,6 +649,16 @@
     void (*calc_finished)(mbedtls_ssl_context *, unsigned char *, int);
     mbedtls_ssl_tls_prf_cb *tls_prf;
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+    uint16_t offered_group_id; /* The NamedGroup value for the group
+                                * that is being used for ephemeral
+                                * key exchange.
+                                *
+                                * On the client: Defaults to the first
+                                * entry in the client's group list,
+                                * but can be overwritten by the HRR. */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+
     mbedtls_ssl_ciphersuite_t const *ciphersuite_info;
 
     size_t pmslen;                      /*!<  premaster length        */
@@ -1348,6 +1358,49 @@
 void mbedtls_ssl_flight_free( mbedtls_ssl_flight_item *flight );
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+
+/*
+ * Helper functions around key exchange modes.
+ */
+static inline unsigned mbedtls_ssl_conf_tls13_check_kex_modes( mbedtls_ssl_context *ssl,
+                                                               int kex_mode_mask )
+{
+    return( ( ssl->conf->tls13_kex_modes & kex_mode_mask ) != 0 );
+}
+
+static inline int mbedtls_ssl_conf_tls13_psk_enabled( mbedtls_ssl_context *ssl )
+{
+    return( mbedtls_ssl_conf_tls13_check_kex_modes( ssl,
+                   MBEDTLS_SSL_TLS13_KEY_EXCHANGE_MODE_PSK ) );
+}
+
+static inline int mbedtls_ssl_conf_tls13_psk_ephemeral_enabled( mbedtls_ssl_context *ssl )
+{
+    return( mbedtls_ssl_conf_tls13_check_kex_modes( ssl,
+                   MBEDTLS_SSL_TLS13_KEY_EXCHANGE_MODE_PSK_EPHEMERAL ) );
+}
+
+static inline int mbedtls_ssl_conf_tls13_ephemeral_enabled( mbedtls_ssl_context *ssl )
+{
+    return( mbedtls_ssl_conf_tls13_check_kex_modes( ssl,
+                   MBEDTLS_SSL_TLS13_KEY_EXCHANGE_MODE_EPHEMERAL ) );
+}
+
+static inline int mbedtls_ssl_conf_tls13_some_ephemeral_enabled( mbedtls_ssl_context *ssl )
+{
+    return( mbedtls_ssl_conf_tls13_check_kex_modes( ssl,
+                   MBEDTLS_SSL_TLS13_KEY_EXCHANGE_MODE_EPHEMERAL_ALL ) );
+}
+
+static inline int mbedtls_ssl_conf_tls13_some_psk_enabled( mbedtls_ssl_context *ssl )
+{
+    return( mbedtls_ssl_conf_tls13_check_kex_modes( ssl,
+                   MBEDTLS_SSL_TLS13_KEY_EXCHANGE_MODE_PSK_ALL ) );
+}
+
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+
 /**
  * ssl utils functions for checking configuration.
  */
@@ -1396,6 +1449,24 @@
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
 
+/*
+ * Helper functions for NamedGroup.
+ */
+static inline int mbedtls_ssl_tls13_named_group_is_ecdhe( uint16_t named_group )
+{
+    return( named_group == MBEDTLS_SSL_TLS13_NAMED_GROUP_SECP256R1 ||
+            named_group == MBEDTLS_SSL_TLS13_NAMED_GROUP_SECP384R1 ||
+            named_group == MBEDTLS_SSL_TLS13_NAMED_GROUP_SECP521R1 ||
+            named_group == MBEDTLS_SSL_TLS13_NAMED_GROUP_X25519    ||
+            named_group == MBEDTLS_SSL_TLS13_NAMED_GROUP_X448 );
+}
+
+static inline int mbedtls_ssl_tls13_named_group_is_dhe( uint16_t named_group )
+{
+    return( named_group >= MBEDTLS_SSL_TLS13_NAMED_GROUP_FFDHE2048 &&
+            named_group <= MBEDTLS_SSL_TLS13_NAMED_GROUP_FFDHE8192 );
+}
+
 static inline void mbedtls_ssl_handshake_set_state( mbedtls_ssl_context *ssl,
                                                     mbedtls_ssl_states state )
 {
@@ -1430,6 +1501,7 @@
                                          unsigned char *buf,
                                          unsigned char *end,
                                          size_t *olen);
+
 #endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
 #endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 41c7a4d..13e932c 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -27,8 +27,11 @@
 
 #include <string.h>
 
+#include "mbedtls/debug.h"
+#include "mbedtls/error.h"
+
 #include "ssl_misc.h"
-#include <mbedtls/debug.h>
+#include "ecdh_misc.h"
 
 #define CLIENT_HELLO_RANDOM_LEN 32
 
@@ -52,13 +55,11 @@
 
     MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, adding supported versions extension" ) );
 
-    /*
-     * Check space for extension header.
-     *
-     * extension_type           2
-     * extension_data_length    2
-     * version_length           1
-     * versions                 2
+    /* Check if we have space to write the extension:
+     * - extension_type         (2 bytes)
+     * - extension_data_length  (2 bytes)
+     * - versions_length        (1 byte )
+     * - versions               (2 bytes)
      */
     MBEDTLS_SSL_CHK_BUF_PTR( p, end, 7 );
 
@@ -93,35 +94,366 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
 
+/*
+ * Functions for writing supported_groups extension.
+ *
+ * Stucture of supported_groups:
+ *      enum {
+ *          secp256r1(0x0017), secp384r1(0x0018), secp521r1(0x0019),
+ *          x25519(0x001D), x448(0x001E),
+ *          ffdhe2048(0x0100), ffdhe3072(0x0101), ffdhe4096(0x0102),
+ *          ffdhe6144(0x0103), ffdhe8192(0x0104),
+ *          ffdhe_private_use(0x01FC..0x01FF),
+ *          ecdhe_private_use(0xFE00..0xFEFF),
+ *          (0xFFFF)
+ *      } NamedGroup;
+ *      struct {
+ *          NamedGroup named_group_list<2..2^16-1>;
+ *      } NamedGroupList;
+ */
+#if defined(MBEDTLS_ECDH_C)
+/*
+ * In versions of TLS prior to TLS 1.3, this extension was named
+ * 'elliptic_curves' and only contained elliptic curve groups.
+ */
+static int ssl_tls13_write_named_group_list_ecdhe( mbedtls_ssl_context *ssl,
+                                            unsigned char *buf,
+                                            unsigned char *end,
+                                            size_t *olen )
+{
+    unsigned char *p = buf;
+
+    *olen = 0;
+
+    if( ssl->conf->curve_list == NULL )
+        return( MBEDTLS_ERR_SSL_BAD_CONFIG );
+
+    for ( const mbedtls_ecp_group_id *grp_id = ssl->conf->curve_list;
+          *grp_id != MBEDTLS_ECP_DP_NONE;
+          grp_id++ )
+    {
+        const mbedtls_ecp_curve_info *info;
+        info = mbedtls_ecp_curve_info_from_grp_id( *grp_id );
+        if( info == NULL )
+            continue;
+
+        if( !mbedtls_ssl_tls13_named_group_is_ecdhe( info->tls_id ) )
+            continue;
+
+        MBEDTLS_SSL_CHK_BUF_PTR( p, end, 2);
+        MBEDTLS_PUT_UINT16_BE( info->tls_id, p, 0 );
+        p += 2;
+
+        MBEDTLS_SSL_DEBUG_MSG( 3, ( "NamedGroup: %s ( %x )",
+                  mbedtls_ecp_curve_info_from_tls_id( info->tls_id )->name,
+                  info->tls_id ) );
+    }
+
+    *olen = p - buf;
+
+    return( 0 );
+}
+#else
+static int ssl_tls13_write_named_group_list_ecdhe( mbedtls_ssl_context *ssl,
+                                            unsigned char *buf,
+                                            unsigned char *end,
+                                            size_t *olen )
+{
+    ((void) ssl);
+    ((void) buf);
+    ((void) end);
+    *olen = 0;
+    return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
+}
+#endif /* MBEDTLS_ECDH_C */
+
+static int ssl_tls13_write_named_group_list_dhe( mbedtls_ssl_context *ssl,
+                                        unsigned char *buf,
+                                        unsigned char *end,
+                                        size_t *olen )
+{
+    ((void) ssl);
+    ((void) buf);
+    ((void) end);
+    *olen = 0;
+    MBEDTLS_SSL_DEBUG_MSG( 3, ( "write_named_group_dhe is not implemented" ) );
+    return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
+}
+
 static int ssl_tls13_write_supported_groups_ext( mbedtls_ssl_context *ssl,
                                                  unsigned char *buf,
                                                  unsigned char *end,
                                                  size_t *olen )
 {
-    ((void) ssl);
-    ((void) buf);
-    ((void) end);
-    ((void) olen);
-    return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
+    unsigned char *p = buf ;
+    unsigned char *named_group_list_ptr; /* Start of named_group_list */
+    size_t named_group_list_len;         /* Length of named_group_list */
+    size_t output_len = 0;
+    int ret_ecdhe, ret_dhe;
+
+    *olen = 0;
+
+    if( !mbedtls_ssl_conf_tls13_some_ephemeral_enabled( ssl ) )
+        return( 0 );
+
+    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, adding supported_groups extension" ) );
+
+    /* Check if we have space for header and length fields:
+     * - extension_type         (2 bytes)
+     * - extension_data_length  (2 bytes)
+     * - named_group_list_length   (2 bytes)
+     */
+    MBEDTLS_SSL_CHK_BUF_PTR( p, end, 6 );
+    p += 6;
+
+    named_group_list_ptr = p;
+    ret_ecdhe = ssl_tls13_write_named_group_list_ecdhe( ssl, p, end, &output_len );
+    if( ret_ecdhe != 0 )
+    {
+        MBEDTLS_SSL_DEBUG_RET( 1, "ssl_tls13_write_named_group_list_ecdhe", ret_ecdhe );
+    }
+    p += output_len;
+
+    ret_dhe = ssl_tls13_write_named_group_list_dhe( ssl, p, end, &output_len );
+    if( ret_dhe != 0 )
+    {
+        MBEDTLS_SSL_DEBUG_RET( 1, "ssl_tls13_write_named_group_list_dhe", ret_dhe );
+    }
+    p += output_len;
+
+    /* Both ECDHE and DHE failed. */
+    if( ret_ecdhe != 0 && ret_dhe != 0 )
+    {
+        MBEDTLS_SSL_DEBUG_MSG( 1, ( "Both ECDHE and DHE groups are fail. " ) );
+        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    }
+
+    /* Length of named_group_list*/
+    named_group_list_len = p - named_group_list_ptr;
+    if( named_group_list_len == 0 )
+    {
+        MBEDTLS_SSL_DEBUG_MSG( 1, ( "No group available." ) );
+        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    }
+
+    /* Write extension_type */
+    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_SUPPORTED_GROUPS, buf, 0 );
+    /* Write extension_data_length */
+    MBEDTLS_PUT_UINT16_BE( named_group_list_len + 2, buf, 2 );
+    /* Write length of named_group_list */
+    MBEDTLS_PUT_UINT16_BE( named_group_list_len, buf, 4 );
+
+    MBEDTLS_SSL_DEBUG_BUF( 3, "Supported groups extension", buf + 4, named_group_list_len + 2 );
+
+    *olen = p - buf;
+
+    ssl->handshake->extensions_present |= MBEDTLS_SSL_EXT_SUPPORTED_GROUPS;
+
+    return( 0 );
 }
 
-static int ssl_tls13_write_key_shares_ext( mbedtls_ssl_context *ssl,
-                                           unsigned char *buf,
-                                           unsigned char *end,
-                                           size_t *olen )
+/*
+ * Functions for writing key_share extension.
+ */
+#if defined(MBEDTLS_ECDH_C)
+static int ssl_tls13_generate_and_write_ecdh_key_exchange(
+                mbedtls_ssl_context *ssl,
+                uint16_t named_group,
+                unsigned char *buf,
+                unsigned char *end,
+                size_t *olen )
 {
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    const mbedtls_ecp_curve_info *curve_info =
+        mbedtls_ecp_curve_info_from_tls_id( named_group );
+
+    if( curve_info == NULL )
+        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+
+    MBEDTLS_SSL_DEBUG_MSG( 3, ( "offer curve %s", curve_info->name ) );
+
+    if( ( ret = mbedtls_ecdh_setup_no_everest( &ssl->handshake->ecdh_ctx,
+                                               curve_info->grp_id ) ) != 0 )
+    {
+        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_setup_no_everest", ret );
+        return( ret );
+    }
+
+    ret = mbedtls_ecdh_tls13_make_params( &ssl->handshake->ecdh_ctx, olen,
+                                           buf, end - buf,
+                                           ssl->conf->f_rng, ssl->conf->p_rng );
+    if( ret != 0 )
+    {
+        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_tls13_make_params", ret );
+        return( ret );
+    }
+
+    MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx,
+                            MBEDTLS_DEBUG_ECDH_Q );
+    return( 0 );
+}
+#endif /* MBEDTLS_ECDH_C */
+
+static int ssl_tls13_get_default_group_id( mbedtls_ssl_context *ssl,
+                                           uint16_t *group_id )
+{
+    int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
+
+
+#if defined(MBEDTLS_ECDH_C)
+    /* Pick first available ECDHE group compatible with TLS 1.3 */
+    if( ssl->conf->curve_list == NULL )
+        return( MBEDTLS_ERR_SSL_BAD_CONFIG );
+
+    for ( const mbedtls_ecp_group_id *grp_id = ssl->conf->curve_list;
+          *grp_id != MBEDTLS_ECP_DP_NONE;
+          grp_id++ )
+    {
+        const mbedtls_ecp_curve_info *info;
+        info = mbedtls_ecp_curve_info_from_grp_id( *grp_id );
+        if( info != NULL &&
+            mbedtls_ssl_tls13_named_group_is_ecdhe( info->tls_id ) )
+        {
+            *group_id = info->tls_id;
+            return( 0 );
+        }
+    }
+#else
     ((void) ssl);
-    ((void) buf);
-    ((void) end);
-    ((void) olen);
-    return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
+    ((void) group_id);
+#endif /* MBEDTLS_ECDH_C */
+
+    /*
+     * Add DHE named groups here.
+     * Pick first available DHE group compatible with TLS 1.3
+     */
+
+    return( ret );
+}
+
+/*
+ * ssl_tls13_write_key_share_ext
+ *
+ * Structure of key_share extension in ClientHello:
+ *
+ *  struct {
+ *          NamedGroup group;
+ *          opaque key_exchange<1..2^16-1>;
+ *      } KeyShareEntry;
+ *  struct {
+ *          KeyShareEntry client_shares<0..2^16-1>;
+ *      } KeyShareClientHello;
+ */
+static int ssl_tls13_write_key_share_ext( mbedtls_ssl_context *ssl,
+                                          unsigned char *buf,
+                                          unsigned char *end,
+                                          size_t *olen )
+{
+    unsigned char *p = buf;
+    unsigned char *client_shares_ptr; /* Start of client_shares */
+    size_t client_shares_len;         /* Length of client_shares */
+    uint16_t group_id;
+    int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
+
+    *olen = 0;
+
+    if( !mbedtls_ssl_conf_tls13_some_ephemeral_enabled( ssl ) )
+        return( 0 );
+
+    /* Check if we have space for header and length fields:
+     * - extension_type         (2 bytes)
+     * - extension_data_length  (2 bytes)
+     * - client_shares_length   (2 bytes)
+     */
+    MBEDTLS_SSL_CHK_BUF_PTR( p, end, 6 );
+    p += 6;
+
+    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello: adding key share extension" ) );
+
+    /* HRR could already have requested something else. */
+    group_id = ssl->handshake->offered_group_id;
+    if( !mbedtls_ssl_tls13_named_group_is_ecdhe( group_id ) &&
+        !mbedtls_ssl_tls13_named_group_is_dhe( group_id ) )
+    {
+        MBEDTLS_SSL_PROC_CHK( ssl_tls13_get_default_group_id( ssl,
+                                                              &group_id ) );
+    }
+
+    /*
+     * Dispatch to type-specific key generation function.
+     *
+     * So far, we're only supporting ECDHE. With the introduction
+     * of PQC KEMs, we'll want to have multiple branches, one per
+     * type of KEM, and dispatch to the corresponding crypto. And
+     * only one key share entry is allowed.
+     */
+    client_shares_ptr = p;
+#if defined(MBEDTLS_ECDH_C)
+    if( mbedtls_ssl_tls13_named_group_is_ecdhe( group_id ) )
+    {
+        /* Pointer to group */
+        unsigned char *group_ptr = p;
+        /* Length of key_exchange */
+        size_t key_exchange_len;
+
+        /* Check there is space for header of KeyShareEntry
+         * - group                  (2 bytes)
+         * - key_exchange_length    (2 bytes)
+         */
+        MBEDTLS_SSL_CHK_BUF_PTR( p, end, 4 );
+        p += 4;
+        ret = ssl_tls13_generate_and_write_ecdh_key_exchange( ssl, group_id,
+                                                              p, end,
+                                                              &key_exchange_len );
+        p += key_exchange_len;
+        if( ret != 0 )
+            return( ret );
+
+        /* Write group */
+        MBEDTLS_PUT_UINT16_BE( group_id, group_ptr, 0 );
+        /* Write key_exchange_length */
+        MBEDTLS_PUT_UINT16_BE( key_exchange_len, group_ptr, 2 );
+    }
+    else
+#endif /* MBEDTLS_ECDH_C */
+    if( 0 /* other KEMs? */ )
+    {
+        /* Do something */
+    }
+    else
+        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+
+    /* Length of client_shares */
+    client_shares_len = p - client_shares_ptr;
+    if( client_shares_len == 0)
+    {
+        MBEDTLS_SSL_DEBUG_MSG( 1, ( "No key share defined." ) );
+        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    }
+    /* Write extension_type */
+    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_KEY_SHARE, buf, 0 );
+    /* Write extension_data_length */
+    MBEDTLS_PUT_UINT16_BE( client_shares_len + 2, buf, 2 );
+    /* Write client_shares_length */
+    MBEDTLS_PUT_UINT16_BE( client_shares_len, buf, 4 );
+
+    /* Update offered_group_id field */
+    ssl->handshake->offered_group_id = group_id;
+
+    /* Output the total length of key_share extension. */
+    *olen = p - buf;
+
+    MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, key_share extension", buf, *olen );
+
+    ssl->handshake->extensions_present |= MBEDTLS_SSL_EXT_KEY_SHARE;
+
+cleanup:
+
+    return( ret );
 }
 
 #endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
-/*
- * Functions for writing ClientHello message.
- */
 /* Write cipher_suites
  * CipherSuite cipher_suites<2..2^16-2>;
  */
@@ -311,7 +643,7 @@
      * 3) Or, in case all ciphers are supported ( which includes #1 and #2
      *    from above )
      */
-    ret = ssl_tls13_write_key_shares_ext( ssl, p, end, &output_len );
+    ret = ssl_tls13_write_key_share_ext( ssl, p, end, &output_len );
     if( ret != 0 )
         return( ret );
     p += output_len;
@@ -340,7 +672,7 @@
     return( 0 );
 }
 
-static int ssl_tls13_finalize_client_hello( mbedtls_ssl_context* ssl )
+static int ssl_tls13_finalize_client_hello( mbedtls_ssl_context *ssl )
 {
     mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_SERVER_HELLO );
     return( 0 );
diff --git a/library/ssl_tls13_generic.c b/library/ssl_tls13_generic.c
index ca4c167..5c20f29 100644
--- a/library/ssl_tls13_generic.c
+++ b/library/ssl_tls13_generic.c
@@ -24,6 +24,7 @@
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
 
 #include "mbedtls/error.h"
+#include "mbedtls/debug.h"
 
 #include "ssl_misc.h"
 
@@ -99,17 +100,70 @@
  *
  * Only if we handle at least one key exchange that needs signatures.
  */
-
 int mbedtls_ssl_tls13_write_sig_alg_ext( mbedtls_ssl_context *ssl,
                                          unsigned char *buf,
                                          unsigned char *end,
                                          size_t *olen )
 {
-    ((void) ssl);
-    ((void) buf);
-    ((void) end);
-    ((void) olen);
-    return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
+    unsigned char *p = buf;
+    unsigned char *supported_sig_alg_ptr; /* Start of supported_signature_algorithms */
+    size_t supported_sig_alg_len = 0;     /* Length of supported_signature_algorithms */
+
+    *olen = 0;
+
+    /* Skip the extension on the client if all allowed key exchanges
+     * are PSK-based. */
+#if defined(MBEDTLS_SSL_CLI_C)
+    if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT &&
+        !mbedtls_ssl_conf_tls13_some_ephemeral_enabled( ssl ) )
+    {
+        return( 0 );
+    }
+#endif /* MBEDTLS_SSL_CLI_C */
+
+    MBEDTLS_SSL_DEBUG_MSG( 3, ( "adding signature_algorithms extension" ) );
+
+    /* Check if we have space for header and length field:
+     * - extension_type         (2 bytes)
+     * - extension_data_length  (2 bytes)
+     * - supported_signature_algorithms_length   (2 bytes)
+     */
+    MBEDTLS_SSL_CHK_BUF_PTR( p, end, 6 );
+    p += 6;
+
+    /*
+     * Write supported_signature_algorithms
+     */
+    supported_sig_alg_ptr = p;
+    for( const uint16_t *sig_alg = ssl->conf->tls13_sig_algs;
+         *sig_alg != MBEDTLS_TLS13_SIG_NONE; sig_alg++ )
+    {
+        MBEDTLS_SSL_CHK_BUF_PTR( p, end, 2 );
+        MBEDTLS_PUT_UINT16_BE( *sig_alg, p, 0 );
+        p += 2;
+        MBEDTLS_SSL_DEBUG_MSG( 3, ( "signature scheme [%x]", *sig_alg ) );
+    }
+
+    /* Length of supported_signature_algorithms */
+    supported_sig_alg_len = p - supported_sig_alg_ptr;
+    if( supported_sig_alg_len == 0 )
+    {
+        MBEDTLS_SSL_DEBUG_MSG( 1, ( "No signature algorithms defined." ) );
+        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    }
+
+    /* Write extension_type */
+    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_SIG_ALG, buf, 0 );
+    /* Write extension_data_length */
+    MBEDTLS_PUT_UINT16_BE( supported_sig_alg_len + 2, buf, 2 );
+    /* Write length of supported_signature_algorithms */
+    MBEDTLS_PUT_UINT16_BE( supported_sig_alg_len, buf, 4 );
+
+    /* Output the total length of signature algorithms extension. */
+    *olen = p - buf;
+
+    ssl->handshake->extensions_present |= MBEDTLS_SSL_EXT_SIG_ALG;
+    return( 0 );
 }
 
 #endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 9944a85..8c88b63 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -2565,6 +2565,8 @@
     make
     msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, without padding"
     make test
+    msg "ssl-opt.sh (TLS 1.3 experimental)"
+    if_build_succeeded tests/ssl-opt.sh
 }
 
 component_test_tls13_experimental_with_padding () {
@@ -2579,6 +2581,31 @@
     if_build_succeeded tests/ssl-opt.sh
 }
 
+component_test_tls13_experimental_with_ecp_restartable () {
+    msg "build: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, with ecp_restartable"
+    scripts/config.py set MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+    scripts/config.py set MBEDTLS_ECP_RESTARTABLE
+    CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
+    make
+    msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, with ecp_restartable"
+    make test
+    msg "ssl-opt.sh (TLS 1.3 experimental)"
+    if_build_succeeded tests/ssl-opt.sh
+}
+
+component_test_tls13_experimental_with_everest () {
+    msg "build: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, with Everest"
+    scripts/config.py set MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+    scripts/config.py set MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED
+    scripts/config.py unset MBEDTLS_ECP_RESTARTABLE
+    CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
+    make
+    msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, with Everest"
+    make test
+    msg "ssl-opt.sh (TLS 1.3 experimental)"
+    if_build_succeeded tests/ssl-opt.sh
+}
+
 component_build_mingw () {
     msg "build: Windows cross build - mingw64, make (Link Library)" # ~ 30s
     make CC=i686-w64-mingw32-gcc AR=i686-w64-mingw32-ar LD=i686-w64-minggw32-ld CFLAGS='-Werror -Wall -Wextra' WINDOWS_BUILD=1 lib programs
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 3e199e2..39499d4 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -1322,6 +1322,11 @@
     O_LEGACY_CLI="$O_LEGACY_CLI -connect localhost:+SRV_PORT"
 fi
 
+if [ -n "${OPENSSL_NEXT:-}" ]; then
+    O_NEXT_SRV="$O_NEXT_SRV -accept $SRV_PORT"
+    O_NEXT_CLI="$O_NEXT_CLI -connect localhost:+SRV_PORT"
+fi
+
 if [ -n "${GNUTLS_NEXT_SERV:-}" ]; then
     G_NEXT_SRV="$G_NEXT_SRV -p $SRV_PORT"
 fi
@@ -8661,6 +8666,24 @@
             -s "SSL - The requested feature is not available" \
             -c "SSL - The requested feature is not available"
 
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+run_test    "TLS1.3: Test client hello msg work - openssl" \
+            "$O_NEXT_SRV -tls1_3 -msg" \
+            "$P_CLI min_version=tls1_3 max_version=tls1_3" \
+            1 \
+            -c "SSL - The requested feature is not available" \
+            -s "ServerHello"
+
+requires_gnutls_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+run_test    "TLS1.3: Test client hello msg work - gnutls" \
+            "$G_NEXT_SRV --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3 --debug=4" \
+            "$P_CLI min_version=tls1_3 max_version=tls1_3" \
+            1 \
+            -c "SSL - The requested feature is not available" \
+            -s "SERVER HELLO was queued"
+
 # Test heap memory usage after handshake
 requires_config_enabled MBEDTLS_MEMORY_DEBUG
 requires_config_enabled MBEDTLS_MEMORY_BUFFER_ALLOC_C
diff --git a/tests/suites/test_suite_ccm.data b/tests/suites/test_suite_ccm.data
index a14d4be..591e0d9 100644
--- a/tests/suites/test_suite_ccm.data
+++ b/tests/suites/test_suite_ccm.data
@@ -174,6 +174,10 @@
 depends_on:MBEDTLS_AES_C
 mbedtls_ccm_encrypt_and_tag:MBEDTLS_CIPHER_ID_AES:"D7828D13B2B0BDC325A76236DF93CC6B":"ABF21C0B02FEB88F856DF4A37381BCE3CC128517D4":"008D493B30AE8B3C9696766CFA":"6E37A6EF546D955D34AB6059":"F32905B88A641B04B9C9FFB58CC390900F3DA12AB16DCE9E82EFA16DA62059"
 
+CCM encrypt and tag AES-128 (P=0, N=13, A=0, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_encrypt_and_tag:MBEDTLS_CIPHER_ID_AES:"54caf96ef6d448734700aadab50faf7a":"":"a3803e752ae849c910d8da36af":"":"eba8347baa6d61f87b67c2dd7c6d2053"
+
 CCM encrypt and tag NIST VTT AES-128 #1 (P=24, N=13, A=32, T=4)
 depends_on:MBEDTLS_AES_C
 mbedtls_ccm_encrypt_and_tag:MBEDTLS_CIPHER_ID_AES:"43b1a6bc8d0d22d6d1ca95c18593cca5":"a2b381c7d1545c408fe29817a21dc435a154c87256346b05":"9882578e750b9682c6ca7f8f86":"2084f3861c9ad0ccee7c63a7e05aece5db8b34bd8724cc06b4ca99a7f9c4914f":"cc69ed76985e0ed4c8365a72775e5a19bfccc71aeb116c85a8c74677"
@@ -1517,3 +1521,226 @@
 CCM-Camellia encrypt and tag RFC 5528 #24
 depends_on:MBEDTLS_CAMELLIA_C
 mbedtls_ccm_encrypt_and_tag:MBEDTLS_CIPHER_ID_CAMELLIA:"D75C2778078CA93D971F96FDE720F4CD":"9DC9EDAE2FF5DF8636E8C6DE0EED55F7867E33337D":"003B8FD8D3A937B160B6A31C1C":"A4D499F78419728C19178B0C":"4B198156393B0F7796086AAFB454F8C3F034CCA966945F1FCEA7E11BEE6A2F"
+
+CCM encrypt, skip ad AES-128 (P=0, N=13, A=0, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"54caf96ef6d448734700aadab50faf7a":"":"a3803e752ae849c910d8da36af":"":"eba8347baa6d61f87b67c2dd7c6d2053"
+
+CCM* encrypt, skip ad AES-128 (P=0, N=13, A=0, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"54caf96ef6d448734700aadab50faf7a":"":"a3803e752ae849c910d8da36af":"":"eba8347baa6d61f87b67c2dd7c6d2053"
+
+CCM decrypt, skip ad AES-128 (P=0, N=13, A=0, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"54caf96ef6d448734700aadab50faf7a":"":"a3803e752ae849c910d8da36af":"":"eba8347baa6d61f87b67c2dd7c6d2053"
+
+CCM* decrypt, skip ad AES-128 (P=0, N=13, A=0, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"54caf96ef6d448734700aadab50faf7a":"":"a3803e752ae849c910d8da36af":"":"eba8347baa6d61f87b67c2dd7c6d2053"
+
+CCM encrypt, skip ad NIST VADT AES-128 (P=24, N=13, A=0, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"d24a3d3dde8c84830280cb87abad0bb3":"7c86135ed9c2a515aaae0e9a208133897269220f30870006":"f1100035bb24a8d26004e0e24b":"1faeb0ee2ca2cd52f0aa3966578344f24e69b742c4ab37ab":"1123301219c70599b7c373ad4b3ad67b"
+
+CCM* encrypt, skip ad NIST VADT AES-128 (P=24, N=13, A=0, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"d24a3d3dde8c84830280cb87abad0bb3":"7c86135ed9c2a515aaae0e9a208133897269220f30870006":"f1100035bb24a8d26004e0e24b":"1faeb0ee2ca2cd52f0aa3966578344f24e69b742c4ab37ab":"1123301219c70599b7c373ad4b3ad67b"
+
+CCM decrypt, skip ad NIST DVPT AES-192 (P=24, N=7, A=0, T=4)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"19ebfde2d5468ba0a3031bde629b11fd4094afcb205393fa":"411986d04d6463100bff03f7d0bde7ea2c3488784378138c":"5a8aa485c316e9":"3796cf51b8726652a4204733b8fbb047cf00fb91a9837e22":"ddc93a54"
+
+CCM* decrypt, skip ad NIST DVPT AES-192 (P=24, N=7, A=0, T=4)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"19ebfde2d5468ba0a3031bde629b11fd4094afcb205393fa":"411986d04d6463100bff03f7d0bde7ea2c3488784378138c":"5a8aa485c316e9":"3796cf51b8726652a4204733b8fbb047cf00fb91a9837e22":"ddc93a54"
+
+CCM encrypt, skip update AES-128 (P=0, N=13, A=0, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"54caf96ef6d448734700aadab50faf7a":"a3803e752ae849c910d8da36af":"":"eba8347baa6d61f87b67c2dd7c6d2053"
+
+CCM decrypt, skip update AES-128 (P=0, N=13, A=0, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"54caf96ef6d448734700aadab50faf7a":"a3803e752ae849c910d8da36af":"":"eba8347baa6d61f87b67c2dd7c6d2053"
+
+CCM* encrypt, skip update AES-128 (P=0, N=13, A=0, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"54caf96ef6d448734700aadab50faf7a":"a3803e752ae849c910d8da36af":"":"eba8347baa6d61f87b67c2dd7c6d2053"
+
+CCM* decrypt, skip update AES-128 (P=0, N=13, A=0, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"54caf96ef6d448734700aadab50faf7a":"a3803e752ae849c910d8da36af":"":"eba8347baa6d61f87b67c2dd7c6d2053"
+
+CCM encrypt, skip update NIST VPT AES-128 #1 (P=0, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"2ebf60f0969013a54a3dedb19d20f6c8":"1de8c5e21f9db33123ff870add":"e1de6c6119d7db471136285d10b47a450221b16978569190ef6a22b055295603":"0ead29ef205fbb86d11abe5ed704b880"
+
+CCM* encrypt, skip update NIST VPT AES-128 #1 (P=0, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"2ebf60f0969013a54a3dedb19d20f6c8":"1de8c5e21f9db33123ff870add":"e1de6c6119d7db471136285d10b47a450221b16978569190ef6a22b055295603":"0ead29ef205fbb86d11abe5ed704b880"
+
+CCM decrypt, skip update NIST DVPT AES-256 #23 (P=0, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"8c5cf3457ff22228c39c051c4e05ed4093657eb303f859a9d4b0f8be0127d88a":"a544218dadd3c10583db49cf39":"3c0e2815d37d844f7ac240ba9d6e3a0b2a86f706e885959e09a1005e024f6907":"867b0d87cf6e0f718200a97b4f6d5ad5"
+
+CCM* decrypt, skip update NIST DVPT AES-256 #23 (P=0, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_skip_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"8c5cf3457ff22228c39c051c4e05ed4093657eb303f859a9d4b0f8be0127d88a":"a544218dadd3c10583db49cf39":"3c0e2815d37d844f7ac240ba9d6e3a0b2a86f706e885959e09a1005e024f6907":"867b0d87cf6e0f718200a97b4f6d5ad5"
+
+CCM encrypt, overflow ad NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_overflow_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM encrypt, incomplete ad NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM encrypt, full ad and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_full_ad_and_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM encrypt, incomplete ad and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_ad_and_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM encrypt, overflow update NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_overflow_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM encrypt, incomplete update NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM encrypt, full update and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_full_update_and_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM encrypt, incomplete update and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_update_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM decrypt, overflow ad NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_overflow_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM decrypt, incomplete ad NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM decrypt, full ad and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_full_ad_and_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM decrypt, incomplete ad and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_ad_and_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM decrypt, overflow update NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16))
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_overflow_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM decrypt, incomplete update NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16))
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM decrypt, full update and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_full_update_and_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM decrypt, incomplete update and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_update_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM* encrypt, overflow ad NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_overflow_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM* encrypt, incomplete ad NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM* encrypt, full ad and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_full_ad_and_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM* encrypt, overflow update NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_overflow_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM* encrypt, incomplete ad and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_ad_and_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM* encrypt, incomplete update NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM* encrypt, full update and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_full_update_and_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM* encrypt, incomplete update and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_update_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM* decrypt, overflow ad NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_overflow_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM* decrypt, incomplete ad NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_ad:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM* decrypt, full ad and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_full_ad_and_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM* decrypt, incomplete ad and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_ad_and_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"a6f73242f2f227350c0277e4e72cdaa6"
+
+CCM* decrypt, overflow update NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_overflow_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM* decrypt, incomplete update NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_update:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM* decrypt, full update and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_full_update_and_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM* decrypt, incomplete update and overflow NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_incomplete_update_overflow:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM encrypt, instant finish NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+mbedtls_ccm_instant_finish:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98"
+
+CCM decrypt, instant finish NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+mbedtls_ccm_instant_finish:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98"
+
+CCM* encrypt, instant finish NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+mbedtls_ccm_instant_finish:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98"
+
+CCM* decrypt, instant finish NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+mbedtls_ccm_instant_finish:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98"
+
+CCM encrypt, instant finish AES-128 (P=0, N=13, A=0, T=16)
+mbedtls_ccm_instant_finish:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"54caf96ef6d448734700aadab50faf7a":"a3803e752ae849c910d8da36af"
+
+CCM decrypt, instant finish AES-128 (P=0, N=13, A=0, T=16)
+mbedtls_ccm_instant_finish:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_DECRYPT:"54caf96ef6d448734700aadab50faf7a":"a3803e752ae849c910d8da36af"
+
+CCM* encrypt, instant finish AES-128 (P=0, N=13, A=0, T=16)
+mbedtls_ccm_instant_finish:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_ENCRYPT:"54caf96ef6d448734700aadab50faf7a":"a3803e752ae849c910d8da36af"
+
+CCM* decrypt, instant finish AES-128 (P=0, N=13, A=0, T=16)
+mbedtls_ccm_instant_finish:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_STAR_DECRYPT:"54caf96ef6d448734700aadab50faf7a":"a3803e752ae849c910d8da36af"
+
+CCM pass unexpected auth data, NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+mbedtls_ccm_unexpected_ad::MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
+
+CCM encrypt, unexpected ciphertext/plaintext data, NIST VPT AES-128 #14 (P=13, N=13, A=32, T=16)
+depends_on:MBEDTLS_AES_C
+mbedtls_ccm_unexpected_text:MBEDTLS_CIPHER_ID_AES:MBEDTLS_CCM_ENCRYPT:"d32088d50df9aba14d9022c870a0cb85":"4b10788c1a03bca656f04f1f98":"e16c69861efc206e85aab1255e":"0eff7d7bcceb873c3203a8df74f4e91b04bd607ec11202f96cfeb99f5bcdb7aa"
diff --git a/tests/suites/test_suite_ccm.function b/tests/suites/test_suite_ccm.function
index 840583c..e48b1f9 100644
--- a/tests/suites/test_suite_ccm.function
+++ b/tests/suites/test_suite_ccm.function
@@ -1,5 +1,64 @@
 /* BEGIN_HEADER */
 #include "mbedtls/ccm.h"
+
+/* Use the multipart interface to process the encrypted data in two parts
+ * and check that the output matches the expected output.
+ * The context must have been set up with the key. */
+static int check_multipart( mbedtls_ccm_context *ctx,
+                            int mode,
+                            const data_t *iv,
+                            const data_t *add,
+                            const data_t *input,
+                            const data_t *expected_output,
+                            const data_t *tag,
+                            size_t n1,
+                            size_t n1_add)
+{
+    int ok = 0;
+    uint8_t *output = NULL;
+    size_t n2 = input->len - n1;
+    size_t n2_add = add->len - n1_add;
+    size_t olen;
+
+    /* Sanity checks on the test data */
+    TEST_ASSERT( n1 <= input->len );
+    TEST_ASSERT( n1_add <= add->len );
+    TEST_EQUAL( input->len, expected_output->len );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( ctx, mode, iv->x, iv->len ) );
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( ctx, add->len, input->len, tag->len ) );
+    TEST_EQUAL( 0, mbedtls_ccm_update_ad( ctx, add->x, n1_add) );
+    TEST_EQUAL( 0, mbedtls_ccm_update_ad( ctx, add->x + n1_add, n2_add ) );
+
+    /* Allocate a tight buffer for each update call. This way, if the function
+     * tries to write beyond the advertised required buffer size, this will
+     * count as an overflow for memory sanitizers and static checkers. */
+    ASSERT_ALLOC( output, n1 );
+    olen = 0xdeadbeef;
+    TEST_EQUAL( 0, mbedtls_ccm_update( ctx, input->x, n1, output, n1, &olen ) );
+    TEST_EQUAL( n1, olen );
+    ASSERT_COMPARE( output, olen, expected_output->x, n1 );
+    mbedtls_free( output );
+    output = NULL;
+
+    ASSERT_ALLOC( output, n2 );
+    olen = 0xdeadbeef;
+    TEST_EQUAL( 0, mbedtls_ccm_update( ctx, input->x + n1, n2, output, n2, &olen ) );
+    TEST_EQUAL( n2, olen );
+    ASSERT_COMPARE( output, olen, expected_output->x + n1, n2 );
+    mbedtls_free( output );
+    output = NULL;
+
+    ASSERT_ALLOC( output, tag->len );
+    TEST_EQUAL( 0, mbedtls_ccm_finish( ctx, output, tag->len ) );
+    ASSERT_COMPARE( output, tag->len, tag->x, tag->len );
+    mbedtls_free( output );
+    output = NULL;
+
+    ok = 1;
+exit:
+    mbedtls_free( output );
+    return( ok );
+}
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES
@@ -122,71 +181,115 @@
                                   data_t * add, data_t * result )
 {
     mbedtls_ccm_context ctx;
-    size_t tag_len;
-    uint8_t * msg_n_tag = (uint8_t *)malloc( result->len + 2 );
+    size_t n1, n1_add;
+    uint8_t* io_msg_buf = NULL;
+    uint8_t* tag_buf = NULL;
+    const size_t expected_tag_len = result->len - msg->len;
+    const uint8_t* expected_tag = result->x + msg->len;
+
+    /* Prepare input/output message buffer */
+    ASSERT_ALLOC( io_msg_buf, msg->len );
+    if( msg->len != 0 )
+        memcpy( io_msg_buf, msg->x, msg->len );
+
+    /* Prepare tag buffer */
+    ASSERT_ALLOC( tag_buf, expected_tag_len );
 
     mbedtls_ccm_init( &ctx );
-
-    memset( msg_n_tag, 0, result->len + 2 );
-    memcpy( msg_n_tag, msg->x, msg->len );
-
-    tag_len = result->len - msg->len;
-
-    TEST_ASSERT( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ) == 0 );
-
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
     /* Test with input == output */
-    TEST_ASSERT( mbedtls_ccm_encrypt_and_tag( &ctx, msg->len, iv->x, iv->len, add->x, add->len,
-                 msg_n_tag, msg_n_tag, msg_n_tag + msg->len, tag_len ) == 0 );
+    TEST_EQUAL( mbedtls_ccm_encrypt_and_tag( &ctx, msg->len, iv->x, iv->len, add->x, add->len,
+                io_msg_buf, io_msg_buf, tag_buf, expected_tag_len ), 0);
 
-    TEST_ASSERT( memcmp( msg_n_tag, result->x, result->len ) == 0 );
+    ASSERT_COMPARE( io_msg_buf, msg->len, result->x, msg->len );
+    ASSERT_COMPARE( tag_buf, expected_tag_len, expected_tag, expected_tag_len );
 
-    /* Check we didn't write past the end */
-    TEST_ASSERT( msg_n_tag[result->len] == 0 && msg_n_tag[result->len + 1] == 0 );
+    /* Prepare data_t structures for multipart testing */
+    const data_t encrypted_expected = { .x = result->x,
+                                        .len = msg->len };
+    const data_t tag_expected = { .x = (uint8_t*) expected_tag, /* cast to conform with data_t x type */
+                                  .len = expected_tag_len };
+
+    for( n1 = 0; n1 <= msg->len; n1 += 1 )
+    {
+        for( n1_add = 0; n1_add <= add->len; n1_add += 1 )
+        {
+            mbedtls_test_set_step( n1 * 10000 + n1_add );
+            if( !check_multipart( &ctx, MBEDTLS_CCM_ENCRYPT,
+                                  iv, add, msg,
+                                  &encrypted_expected,
+                                  &tag_expected,
+                                  n1, n1_add ) )
+                goto exit;
+        }
+    }
 
 exit:
     mbedtls_ccm_free( &ctx );
-    free( msg_n_tag );
+    mbedtls_free( io_msg_buf );
+    mbedtls_free( tag_buf );
 }
 /* END_CASE */
 
 /* BEGIN_CASE */
 void mbedtls_ccm_auth_decrypt( int cipher_id, data_t * key,
                                data_t * msg, data_t * iv,
-                               data_t * add, int tag_len, int result,
+                               data_t * add, int expected_tag_len, int result,
                                data_t * expected_msg )
 {
-    unsigned char tag[16];
     mbedtls_ccm_context ctx;
+    size_t n1, n1_add;
+
+    const size_t expected_msg_len = msg->len - expected_tag_len;
+    const uint8_t* expected_tag = msg->x + expected_msg_len;
+
+    /* Prepare input/output message buffer */
+    uint8_t* io_msg_buf = NULL;
+    ASSERT_ALLOC( io_msg_buf, expected_msg_len );
+    if( expected_msg_len )
+        memcpy( io_msg_buf, msg->x, expected_msg_len );
 
     mbedtls_ccm_init( &ctx );
-
-    memset( tag, 0x00, sizeof( tag ) );
-
-    msg->len -= tag_len;
-    memcpy( tag, msg->x + msg->len, tag_len );
-
-    TEST_ASSERT( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ) == 0 );
-
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
     /* Test with input == output */
-    TEST_ASSERT( mbedtls_ccm_auth_decrypt( &ctx, msg->len, iv->x, iv->len, add->x, add->len,
-                 msg->x, msg->x, msg->x + msg->len, tag_len ) == result );
+    TEST_EQUAL( mbedtls_ccm_auth_decrypt( &ctx, expected_msg_len, iv->x, iv->len, add->x, add->len,
+                io_msg_buf, io_msg_buf, expected_tag, expected_tag_len ), result );
 
     if( result == 0 )
     {
-        TEST_ASSERT( memcmp( msg->x, expected_msg->x, expected_msg->len ) == 0 );
+        ASSERT_COMPARE( io_msg_buf, expected_msg_len, expected_msg->x, expected_msg_len );
+
+         /* Prepare data_t structures for multipart testing */
+        const data_t encrypted = { .x = msg->x,
+                                   .len = expected_msg_len };
+
+        const data_t tag_expected = { .x = (uint8_t*) expected_tag,
+                                      .len = expected_tag_len };
+
+        for( n1 = 0; n1 <= expected_msg_len; n1 += 1 )
+        {
+            for( n1_add = 0; n1_add <= add->len; n1_add += 1 )
+            {
+                mbedtls_test_set_step( n1 * 10000 + n1_add );
+                if( !check_multipart( &ctx, MBEDTLS_CCM_DECRYPT,
+                                iv, add, &encrypted,
+                                expected_msg,
+                                &tag_expected,
+                                n1, n1_add ) )
+                    goto exit;
+           }
+        }
     }
     else
     {
         size_t i;
 
-        for( i = 0; i < msg->len; i++ )
-            TEST_ASSERT( msg->x[i] == 0 );
+        for( i = 0; i < expected_msg_len; i++ )
+            TEST_EQUAL( io_msg_buf[i], 0 );
     }
 
-    /* Check we didn't write past the end (where the original tag is) */
-    TEST_ASSERT( memcmp( msg->x + msg->len, tag, tag_len ) == 0 );
-
 exit:
+    mbedtls_free(io_msg_buf);
     mbedtls_ccm_free( &ctx );
 }
 /* END_CASE */
@@ -199,20 +302,32 @@
                             data_t *expected_result, int output_ret )
 {
     unsigned char iv[13];
-    unsigned char result[50];
     mbedtls_ccm_context ctx;
-    size_t iv_len, tag_len;
-    int ret;
+    size_t iv_len, expected_tag_len;
+    size_t n1, n1_add;
+    uint8_t* io_msg_buf = NULL;
+    uint8_t* tag_buf = NULL;
 
-    mbedtls_ccm_init( &ctx );
+    const uint8_t* expected_tag = expected_result->x + msg->len;
 
-    memset( result, 0x00, sizeof( result ) );
-
+    /* Calculate tag length */
     if( sec_level % 4 == 0)
-        tag_len = 0;
+        expected_tag_len = 0;
     else
-        tag_len = 1 << ( sec_level % 4 + 1);
+        expected_tag_len = 1 << ( sec_level % 4 + 1);
 
+    /* Prepare input/output message buffer */
+    ASSERT_ALLOC( io_msg_buf, msg->len );
+    if( msg->len )
+        memcpy( io_msg_buf, msg->x, msg->len );
+
+    /* Prepare tag buffer */
+    if( expected_tag_len == 0 )
+        ASSERT_ALLOC( tag_buf, 16 );
+    else
+        ASSERT_ALLOC( tag_buf, expected_tag_len );
+
+    /* Calculate iv */
     TEST_ASSERT( source_address->len == 8 );
     TEST_ASSERT( frame_counter->len == 4 );
     memcpy( iv, source_address->x, source_address->len );
@@ -220,24 +335,46 @@
     iv[source_address->len + frame_counter->len] = sec_level;
     iv_len = sizeof( iv );
 
-    TEST_ASSERT( mbedtls_ccm_setkey( &ctx, cipher_id,
-                                     key->x, key->len * 8 ) == 0 );
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id,
+                                     key->x, key->len * 8 ), 0 );
+    /* Test with input == output */
+    TEST_EQUAL( mbedtls_ccm_star_encrypt_and_tag( &ctx, msg->len, iv, iv_len,
+                                            add->x, add->len, io_msg_buf,
+                                            io_msg_buf, tag_buf, expected_tag_len), output_ret );
 
-    ret = mbedtls_ccm_star_encrypt_and_tag( &ctx, msg->len, iv, iv_len,
-                                            add->x, add->len, msg->x,
-                                            result, result + msg->len, tag_len );
+    ASSERT_COMPARE( io_msg_buf, msg->len, expected_result->x, msg->len );
+    ASSERT_COMPARE( tag_buf, expected_tag_len, expected_tag, expected_tag_len );
 
-    TEST_ASSERT( ret == output_ret );
+    if( output_ret == 0 )
+    {
+        const data_t iv_data = { .x = iv,
+                                 .len = iv_len };
 
-    TEST_ASSERT( memcmp( result,
-                         expected_result->x, expected_result->len ) == 0 );
+        const data_t encrypted_expected = { .x = expected_result->x,
+                                            .len = msg->len };
+        const data_t tag_expected = { .x = (uint8_t*)expected_tag,
+                                      .len = expected_tag_len };
 
-    /* Check we didn't write past the end */
-    TEST_ASSERT( result[expected_result->len] == 0 &&
-                 result[expected_result->len + 1] == 0 );
+        for( n1 = 0; n1 <= msg->len; n1 += 1 )
+        {
+            for( n1_add = 0; n1_add <= add->len; n1_add += 1 )
+            {
+                mbedtls_test_set_step( n1 * 10000 + n1_add );
+                if( !check_multipart( &ctx, MBEDTLS_CCM_STAR_ENCRYPT,
+                                      &iv_data, add, msg,
+                                      &encrypted_expected,
+                                      &tag_expected,
+                                      n1, n1_add ) )
+                    goto exit;
+            }
+        }
+    }
 
 exit:
     mbedtls_ccm_free( &ctx );
+    mbedtls_free( io_msg_buf );
+    mbedtls_free( tag_buf );
 }
 /* END_CASE */
 
@@ -249,21 +386,27 @@
                             data_t *expected_result, int output_ret )
 {
     unsigned char iv[13];
-    unsigned char result[50];
     mbedtls_ccm_context ctx;
-    size_t iv_len, tag_len;
-    int ret;
+    size_t iv_len, expected_tag_len;
+    size_t n1, n1_add;
 
-    mbedtls_ccm_init( &ctx );
-
-    memset( iv, 0x00, sizeof( iv ) );
-    memset( result, '+', sizeof( result ) );
-
+    /* Calculate tag length */
     if( sec_level % 4 == 0)
-        tag_len = 0;
+        expected_tag_len = 0;
     else
-        tag_len = 1 << ( sec_level % 4 + 1);
+        expected_tag_len = 1 << ( sec_level % 4 + 1);
 
+    const size_t expected_msg_len = msg->len - expected_tag_len;
+    const uint8_t* expected_tag = msg->x + expected_msg_len;
+
+    /* Prepare input/output message buffer */
+    uint8_t* io_msg_buf = NULL;
+    ASSERT_ALLOC( io_msg_buf, expected_msg_len );
+    if( expected_msg_len )
+        memcpy( io_msg_buf, msg->x, expected_msg_len );
+
+    /* Calculate iv */
+    memset( iv, 0x00, sizeof( iv ) );
     TEST_ASSERT( source_address->len == 8 );
     TEST_ASSERT( frame_counter->len == 4 );
     memcpy( iv, source_address->x, source_address->len );
@@ -271,23 +414,405 @@
     iv[source_address->len + frame_counter->len] = sec_level;
     iv_len = sizeof( iv );
 
+    mbedtls_ccm_init( &ctx );
     TEST_ASSERT( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ) == 0 );
+    /* Test with input == output */
+    TEST_EQUAL( mbedtls_ccm_star_auth_decrypt( &ctx, expected_msg_len, iv, iv_len,
+                                         add->x, add->len, io_msg_buf, io_msg_buf,
+                                         expected_tag, expected_tag_len ), output_ret );
 
-    ret = mbedtls_ccm_star_auth_decrypt( &ctx, msg->len - tag_len, iv, iv_len,
-                                         add->x, add->len, msg->x, result,
-                                         msg->x + msg->len - tag_len, tag_len );
+    ASSERT_COMPARE( io_msg_buf, expected_msg_len, expected_result->x, expected_msg_len );
 
-    TEST_ASSERT( ret == output_ret );
+    if( output_ret == 0 )
+    {
+        const data_t iv_data = { .x = iv,
+                                 .len = iv_len };
 
-    TEST_ASSERT( memcmp( result, expected_result->x,
-                                 expected_result->len ) == 0 );
+        const data_t encrypted = { .x = msg->x,
+                                   .len = expected_msg_len} ;
 
-    /* Check we didn't write past the end (where the original tag is) */
-    TEST_ASSERT( ( msg->len + 2 ) <= sizeof( result ) );
-    TEST_EQUAL( result[msg->len], '+' );
-    TEST_EQUAL( result[msg->len + 1], '+' );
+        const data_t tag_expected = { .x = (uint8_t*) expected_tag,
+                                      .len = expected_tag_len };
+
+        for( n1 = 0; n1 <= expected_msg_len; n1 += 1 )
+        {
+            for( n1_add = 0; n1_add <= add->len; n1_add += 1 )
+            {
+                mbedtls_test_set_step( n1 * 10000 + n1_add );
+                if( !check_multipart( &ctx, MBEDTLS_CCM_STAR_DECRYPT,
+                                &iv_data, add, &encrypted,
+                                expected_result,
+                                &tag_expected,
+                                n1, n1_add ) )
+                    goto exit;
+           }
+        }
+    }
 
 exit:
     mbedtls_ccm_free( &ctx );
+    mbedtls_free( io_msg_buf );
+}
+/* END_CASE */
+
+/* Skip auth data, provide full text */
+/* BEGIN_CASE */
+void mbedtls_ccm_skip_ad( int cipher_id, int mode,
+                            data_t * key, data_t * msg, data_t * iv,
+                            data_t * result, data_t * tag )
+{
+    mbedtls_ccm_context ctx;
+    uint8_t *output = NULL;
+    size_t olen;
+
+    /* Sanity checks on the test data */
+    TEST_EQUAL( msg->len, result->len );
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, 0, msg->len, tag->len ) );
+
+    ASSERT_ALLOC( output, result->len );
+    olen = 0xdeadbeef;
+    TEST_EQUAL( 0, mbedtls_ccm_update( &ctx, msg->x, msg->len, output, result->len, &olen ) );
+    TEST_EQUAL( result->len, olen );
+    ASSERT_COMPARE( output, olen, result->x, result->len );
+    mbedtls_free( output );
+    output = NULL;
+
+    ASSERT_ALLOC( output, tag->len );
+    TEST_EQUAL( 0, mbedtls_ccm_finish( &ctx, output, tag->len ) );
+    ASSERT_COMPARE( output, tag->len, tag->x, tag->len );
+    mbedtls_free( output );
+    output = NULL;
+
+exit:
+    mbedtls_free( output );
+    mbedtls_ccm_free( &ctx );
+}
+/* END_CASE */
+
+/* Provide auth data, skip full text */
+/* BEGIN_CASE */
+void mbedtls_ccm_skip_update( int cipher_id, int mode,
+                              data_t * key, data_t * iv, data_t* add,
+                              data_t * tag )
+{
+    mbedtls_ccm_context ctx;
+    uint8_t *output = NULL;
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, 0, tag->len ) );
+
+    TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
+
+    ASSERT_ALLOC( output, tag->len );
+    TEST_EQUAL( 0, mbedtls_ccm_finish( &ctx, output, tag->len ) );
+    ASSERT_COMPARE( output, tag->len, tag->x, tag->len );
+    mbedtls_free( output );
+    output = NULL;
+
+exit:
+    mbedtls_free( output );
+    mbedtls_ccm_free( &ctx );
+}
+/* END_CASE */
+
+/* Provide too much auth data */
+/* BEGIN_CASE */
+void mbedtls_ccm_overflow_ad( int cipher_id, int mode,
+                                 data_t * key, data_t * iv,
+                                 data_t * add )
+{
+    mbedtls_ccm_context ctx;
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    // use hardcoded values for msg length and tag length. They are not a part of this test
+    // subtract 1 from configured auth data length to provoke an overflow
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len - 1, 16, 16 ) );
+
+    TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
+exit:
+    mbedtls_ccm_free( &ctx );
+}
+/* END_CASE */
+
+/* Provide unexpected auth data */
+/* BEGIN_CASE */
+void mbedtls_ccm_unexpected_ad( int cipher_id, int mode,
+                                 data_t * key, data_t * iv,
+                                 data_t * add )
+{
+    mbedtls_ccm_context ctx;
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    // use hardcoded values for msg length and tag length. They are not a part of this test
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, 0, 16, 16 ) );
+
+    TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
+exit:
+    mbedtls_ccm_free( &ctx );
+}
+/* END_CASE */
+
+/* Provide unexpected plaintext/ciphertext data */
+/* BEGIN_CASE */
+void mbedtls_ccm_unexpected_text( int cipher_id, int mode,
+                                  data_t * key, data_t * msg, data_t * iv,
+                                  data_t * add )
+{
+    mbedtls_ccm_context ctx;
+    uint8_t *output = NULL;
+    size_t olen;
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    // use hardcoded value for tag length. It is not a part of this test
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, 0, 16 ) );
+
+    TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
+
+    ASSERT_ALLOC( output, msg->len );
+    olen = 0xdeadbeef;
+    TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_update( &ctx, msg->x, msg->len, output, msg->len, &olen ) );
+exit:
+    mbedtls_free( output );
+    mbedtls_ccm_free( &ctx );
+}
+/* END_CASE */
+
+/* Provide incomplete auth data and finish */
+/* BEGIN_CASE */
+void mbedtls_ccm_incomplete_ad( int cipher_id, int mode,
+                                data_t * key, data_t * iv, data_t* add )
+{
+    mbedtls_ccm_context ctx;
+    uint8_t *output = NULL;
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    // use hardcoded values for msg length and tag length. They are not a part of this test
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, 0, 16 ) );
+
+    TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len - 1) );
+
+    ASSERT_ALLOC( output, 16 );
+    TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_finish( &ctx, output, 16 ) );
+
+exit:
+    mbedtls_free( output );
+    mbedtls_ccm_free( &ctx );
+}
+/* END_CASE */
+
+/* Provide complete auth data on first update_ad.
+ * Provide unexpected auth data on second update_ad */
+/* BEGIN_CASE */
+void mbedtls_ccm_full_ad_and_overflow( int cipher_id, int mode,
+                                       data_t * key, data_t * iv,
+                                       data_t * add )
+{
+    mbedtls_ccm_context ctx;
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    // use hardcoded values for msg length and tag length. They are not a part of this test
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, 16, 16 ) );
+
+    // pass full auth data
+    TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
+    // pass 1 extra byte
+    TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_update_ad( &ctx, add->x, 1) );
+exit:
+    mbedtls_ccm_free( &ctx );
+}
+/* END_CASE */
+
+/* Provide incomplete auth data on first update_ad.
+ * Provide too much auth data on second update_ad */
+/* BEGIN_CASE */
+void mbedtls_ccm_incomplete_ad_and_overflow( int cipher_id, int mode,
+                                             data_t * key, data_t * iv,
+                                             data_t * add )
+{
+    mbedtls_ccm_context ctx;
+    uint8_t add_second_buffer[2];
+
+    add_second_buffer[0] = add->x[ add->len - 1 ];
+    add_second_buffer[1] = 0xAB; // some magic value
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    // use hardcoded values for msg length and tag length. They are not a part of this test
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, 16, 16 ) );
+
+    // pass incomplete auth data
+    TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len - 1) );
+    // pass 2 extra bytes (1 missing byte from previous incomplete pass, and 1 unexpected byte)
+    TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_update_ad( &ctx, add_second_buffer, 2) );
+exit:
+    mbedtls_ccm_free( &ctx );
+}
+/* END_CASE */
+
+/* Provide too much plaintext/ciphertext */
+/* BEGIN_CASE */
+void mbedtls_ccm_overflow_update( int cipher_id, int mode,
+                                  data_t * key, data_t * msg, data_t * iv,
+                                  data_t * add )
+{
+    mbedtls_ccm_context ctx;
+    uint8_t *output = NULL;
+    size_t olen;
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    // use hardcoded value for tag length. It is a not a part of this test
+    // subtract 1 from configured msg length to provoke an overflow
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, msg->len - 1, 16 ) );
+
+    TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
+
+    ASSERT_ALLOC( output, msg->len );
+    TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, \
+                mbedtls_ccm_update( &ctx, msg->x, msg->len, output, msg->len, &olen ) );
+exit:
+    mbedtls_free( output );
+    mbedtls_ccm_free( &ctx );
+}
+/* END_CASE */
+
+/* Provide incomplete plaintext/ciphertext and finish */
+/* BEGIN_CASE */
+void mbedtls_ccm_incomplete_update( int cipher_id, int mode,
+                                    data_t * key, data_t * msg, data_t * iv,
+                                    data_t * add )
+{
+    mbedtls_ccm_context ctx;
+    uint8_t *output = NULL;
+    size_t olen;
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    // use hardcoded value for tag length. It is not a part of this test
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, msg->len, 16 ) );
+
+    TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
+
+    ASSERT_ALLOC( output, msg->len );
+    olen = 0xdeadbeef;
+    TEST_EQUAL( 0, mbedtls_ccm_update( &ctx, msg->x, msg->len - 1, output, msg->len, &olen ) );
+    mbedtls_free( output );
+    output = NULL;
+
+    ASSERT_ALLOC( output, 16 );
+    TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_finish( &ctx, output, 16 ) );
+
+exit:
+    mbedtls_free( output );
+    mbedtls_ccm_free( &ctx );
+}
+/* END_CASE */
+
+/* Provide full plaintext/ciphertext of first update
+ * Provide unexpected plaintext/ciphertext on second update */
+/* BEGIN_CASE */
+void mbedtls_ccm_full_update_and_overflow( int cipher_id, int mode,
+                                           data_t * key, data_t * msg, data_t * iv,
+                                           data_t * add )
+{
+    mbedtls_ccm_context ctx;
+    uint8_t *output = NULL;
+    size_t olen;
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    // use hardcoded value for tag length. It is a not a part of this test
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, msg->len, 16 ) );
+
+    TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
+
+    ASSERT_ALLOC( output, msg->len );
+    // pass full text
+    TEST_EQUAL( 0, mbedtls_ccm_update( &ctx, msg->x, msg->len, output, msg->len, &olen ) );
+    // pass 1 extra byte
+    TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, \
+                mbedtls_ccm_update( &ctx, msg->x, 1, output, 1, &olen ) );
+exit:
+    mbedtls_free( output );
+    mbedtls_ccm_free( &ctx );
+}
+/* END_CASE */
+
+/* Provide incomplete plaintext/ciphertext of first update
+ * Provide too much plaintext/ciphertext on second update */
+/* BEGIN_CASE */
+void mbedtls_ccm_incomplete_update_overflow( int cipher_id, int mode,
+                                             data_t * key, data_t * msg, data_t * iv,
+                                             data_t * add )
+{
+    mbedtls_ccm_context ctx;
+    uint8_t *output = NULL;
+    size_t olen;
+    uint8_t msg_second_buffer[2];
+
+    msg_second_buffer[0] = msg->x[ msg->len - 1 ];
+    msg_second_buffer[1] = 0xAB; // some magic value
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    // use hardcoded value for tag length. It is a not a part of this test
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, msg->len, 16 ) );
+
+    TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
+
+    ASSERT_ALLOC( output, msg->len + 1 );
+    // pass incomplete text
+    TEST_EQUAL( 0, mbedtls_ccm_update( &ctx, msg->x, msg->len - 1, output, msg->len + 1, &olen ) );
+    // pass 2 extra bytes (1 missing byte from previous incomplete pass, and 1 unexpected byte)
+    TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, \
+                mbedtls_ccm_update( &ctx, msg_second_buffer, 2, output +  msg->len - 1, 2, &olen ) );
+exit:
+    mbedtls_free( output );
+    mbedtls_ccm_free( &ctx );
+}
+/* END_CASE */
+
+/* Finish without passing any auth data or plaintext/ciphertext input */
+/* BEGIN_CASE */
+void mbedtls_ccm_instant_finish( int cipher_id, int mode,
+                                 data_t * key, data_t * iv )
+{
+    mbedtls_ccm_context ctx;
+    uint8_t *output = NULL;
+
+    mbedtls_ccm_init( &ctx );
+    TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
+    TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
+    // use hardcoded values for add length, msg length and tag length.
+    // They are not a part of this test
+    TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, 16, 16, 16 ) );
+
+    ASSERT_ALLOC( output, 16 );
+    TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_finish( &ctx, output, 16 ) );
+
+exit:
+    mbedtls_free( output );
+    mbedtls_ccm_free( &ctx );
 }
 /* END_CASE */
diff --git a/tests/suites/test_suite_net.function b/tests/suites/test_suite_net.function
index f429fc9..513b723 100644
--- a/tests/suites/test_suite_net.function
+++ b/tests/suites/test_suite_net.function
@@ -9,11 +9,11 @@
 #endif
 
 #if defined(MBEDTLS_PLATFORM_IS_UNIXLIKE)
-#include <sys/fcntl.h>
 #include <sys/resource.h>
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/types.h>
+#include <fcntl.h>
 #include <unistd.h>
 #endif