diff --git a/ChangeLog.d/fix-ssl-session-serialization-config.txt b/ChangeLog.d/fix-ssl-session-serialization-config.txt
new file mode 100644
index 0000000000..ca1cc81f5e
--- /dev/null
+++ b/ChangeLog.d/fix-ssl-session-serialization-config.txt
@@ -0,0 +1,4 @@
+Bugfix
+   * Fix missing bitflags in SSL session serialization headers. Their absence
+     allowed SSL sessions saved in one configuration to be loaded in a
+     different, incompatible configuration.
diff --git a/ChangeLog.d/fix_kdf_incorrect_initial_capacity.txt b/ChangeLog.d/fix_kdf_incorrect_initial_capacity.txt
new file mode 100644
index 0000000000..11b82782fb
--- /dev/null
+++ b/ChangeLog.d/fix_kdf_incorrect_initial_capacity.txt
@@ -0,0 +1,3 @@
+Bugfix
+   * Correct initial capacities for key derivation algorithms:TLS12_PRF,
+     TLS12_PSK_TO_MS
diff --git a/ChangeLog.d/gen-key-segfault.txt b/ChangeLog.d/gen-key-segfault.txt
new file mode 100644
index 0000000000..fefc702726
--- /dev/null
+++ b/ChangeLog.d/gen-key-segfault.txt
@@ -0,0 +1,3 @@
+Bugfix
+   * Avoid segmentation fault caused by releasing not initialized
+     entropy resource in gen_key example. Fixes #8809.
diff --git a/ChangeLog.d/rsa-bitlen.txt b/ChangeLog.d/rsa-bitlen.txt
new file mode 100644
index 0000000000..9cb868947a
--- /dev/null
+++ b/ChangeLog.d/rsa-bitlen.txt
@@ -0,0 +1,3 @@
+Bugfix
+   * Fix mbedtls_pk_get_bitlen() for RSA keys whose size is not a
+     multiple of 8. Fixes #868.
diff --git a/include/mbedtls/ecp.h b/include/mbedtls/ecp.h
index e4e40c003c..33ea14d7e2 100644
--- a/include/mbedtls/ecp.h
+++ b/include/mbedtls/ecp.h
@@ -1265,6 +1265,8 @@ int mbedtls_ecp_gen_key(mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key,
 /**
  * \brief           This function reads an elliptic curve private key.
  *
+ * \note            This function does not support Curve448 yet.
+ *
  * \param grp_id    The ECP group identifier.
  * \param key       The destination key.
  * \param buf       The buffer containing the binary representation of the
@@ -1286,17 +1288,43 @@ int mbedtls_ecp_read_key(mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key,
 /**
  * \brief           This function exports an elliptic curve private key.
  *
+ * \note            Note that although this function accepts an output
+ *                  buffer that is smaller or larger than the key, most key
+ *                  import interfaces require the output to have exactly
+ *                  key's nominal length. It is generally simplest to
+ *                  pass the key's nominal length as \c buflen, after
+ *                  checking that the output buffer is large enough.
+ *                  See the description of the \p buflen parameter for
+ *                  how to calculate the nominal length.
+ *
+ * \note            If the private key was not set in \p key,
+ *                  the output is unspecified. Future versions
+ *                  may return an error in that case.
+ *
+ * \note            This function does not support Curve448 yet.
+ *
  * \param key       The private key.
  * \param buf       The output buffer for containing the binary representation
- *                  of the key. (Big endian integer for Weierstrass curves, byte
- *                  string for Montgomery curves.)
+ *                  of the key.
+ *                  For Weierstrass curves, this is the big-endian
+ *                  representation, padded with null bytes at the beginning
+ *                  to reach \p buflen bytes.
+ *                  For Montgomery curves, this is the standard byte string
+ *                  representation (which is little-endian), padded with
+ *                  null bytes at the end to reach \p buflen bytes.
  * \param buflen    The total length of the buffer in bytes.
+ *                  The length of the output is
+ *                  (`grp->nbits` + 7) / 8 bytes
+ *                  where `grp->nbits` is the private key size in bits.
+ *                  For Weierstrass keys, if the output buffer is smaller,
+ *                  leading zeros are trimmed to fit if possible. For
+ *                  Montgomery keys, the output buffer must always be large
+ *                  enough for the nominal length.
  *
  * \return          \c 0 on success.
- * \return          #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL if the \p key
-                    representation is larger than the available space in \p buf.
- * \return          #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the operation for
- *                  the group is not implemented.
+ * \return          #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL or
+ *                  #MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if the \p key
+ *                  representation is larger than the available space in \p buf.
  * \return          Another negative error code on different kinds of failure.
  */
 int mbedtls_ecp_write_key(mbedtls_ecp_keypair *key,
diff --git a/include/psa/crypto_values.h b/include/psa/crypto_values.h
index b528251228..773c01e0ef 100644
--- a/include/psa/crypto_values.h
+++ b/include/psa/crypto_values.h
@@ -400,7 +400,7 @@
     ((type) | PSA_KEY_TYPE_CATEGORY_FLAG_PAIR)
 /** The public key type corresponding to a key pair type.
  *
- * You may also pass a key pair type as \p type, it will be left unchanged.
+ * You may also pass a public key type as \p type, it will be left unchanged.
  *
  * \param type      A public key type or key pair type.
  *
diff --git a/library/ecp.c b/library/ecp.c
index 31a6b9e305..cfe02b0d2c 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -927,7 +927,7 @@ int mbedtls_ecp_point_read_binary(const mbedtls_ecp_group *grp,
     size_t plen;
     ECP_VALIDATE_RET(grp != NULL);
     ECP_VALIDATE_RET(pt  != NULL);
-    ECP_VALIDATE_RET(buf != NULL);
+    ECP_VALIDATE_RET(ilen == 0 || buf != NULL);
 
     if (ilen < 1) {
         return MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
@@ -996,7 +996,7 @@ int mbedtls_ecp_tls_read_point(const mbedtls_ecp_group *grp,
     ECP_VALIDATE_RET(grp != NULL);
     ECP_VALIDATE_RET(pt  != NULL);
     ECP_VALIDATE_RET(buf != NULL);
-    ECP_VALIDATE_RET(*buf != NULL);
+    ECP_VALIDATE_RET(buf_len == 0 || *buf != NULL);
 
     /*
      * We must have at least two bytes (1 for length, at least one for data)
@@ -1068,7 +1068,7 @@ int mbedtls_ecp_tls_read_group(mbedtls_ecp_group *grp,
     mbedtls_ecp_group_id grp_id;
     ECP_VALIDATE_RET(grp  != NULL);
     ECP_VALIDATE_RET(buf  != NULL);
-    ECP_VALIDATE_RET(*buf != NULL);
+    ECP_VALIDATE_RET(len == 0 || *buf != NULL);
 
     if ((ret = mbedtls_ecp_tls_read_group_id(&grp_id, buf, len)) != 0) {
         return ret;
@@ -1088,7 +1088,7 @@ int mbedtls_ecp_tls_read_group_id(mbedtls_ecp_group_id *grp,
     const mbedtls_ecp_curve_info *curve_info;
     ECP_VALIDATE_RET(grp  != NULL);
     ECP_VALIDATE_RET(buf  != NULL);
-    ECP_VALIDATE_RET(*buf != NULL);
+    ECP_VALIDATE_RET(len == 0 || *buf != NULL);
 
     /*
      * We expect at least three bytes (see below)
@@ -2614,8 +2614,8 @@ static int ecp_mul_mxz(mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
     /* RP.X might be slightly larger than P, so reduce it */
     MOD_ADD(RP.X);
 
+    /* Randomize coordinates of the starting point */
 #if defined(MBEDTLS_ECP_NO_INTERNAL_RNG)
-    /* Derandomize coordinates of the starting point */
     if (f_rng == NULL) {
         have_rng = 0;
     }
@@ -3358,10 +3358,10 @@ cleanup:
 int mbedtls_ecp_write_key(mbedtls_ecp_keypair *key,
                           unsigned char *buf, size_t buflen)
 {
-    int ret = MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE;
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
     ECP_VALIDATE_RET(key != NULL);
-    ECP_VALIDATE_RET(buf != NULL);
+    ECP_VALIDATE_RET(buflen == 0 || buf != NULL);
 
 #if defined(MBEDTLS_ECP_MONTGOMERY_ENABLED)
     if (mbedtls_ecp_get_type(&key->grp) == MBEDTLS_ECP_TYPE_MONTGOMERY) {
diff --git a/library/ecp_curves.c b/library/ecp_curves.c
index c7565cce5d..61a1046f3a 100644
--- a/library/ecp_curves.c
+++ b/library/ecp_curves.c
@@ -535,10 +535,10 @@ static inline void ecp_mpi_load(mbedtls_mpi *X, const mbedtls_mpi_uint *p, size_
  */
 static inline void ecp_mpi_set1(mbedtls_mpi *X)
 {
-    static mbedtls_mpi_uint one[] = { 1 };
+    static const mbedtls_mpi_uint one[] = { 1 };
     X->s = 1;
     X->n = 1;
-    X->p = one;
+    X->p = (mbedtls_mpi_uint *) one; /* X->p will not be modified so the cast is safe */
 }
 
 /*
@@ -1348,7 +1348,7 @@ cleanup:
  */
 #define P_KOBLITZ_MAX   (256 / 8 / sizeof(mbedtls_mpi_uint))      // Max limbs in P
 #define P_KOBLITZ_R     (8 / sizeof(mbedtls_mpi_uint))            // Limbs in R
-static inline int ecp_mod_koblitz(mbedtls_mpi *N, mbedtls_mpi_uint *Rp, size_t p_limbs,
+static inline int ecp_mod_koblitz(mbedtls_mpi *N, const mbedtls_mpi_uint *Rp, size_t p_limbs,
                                   size_t adjust, size_t shift, mbedtls_mpi_uint mask)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
@@ -1362,7 +1362,7 @@ static inline int ecp_mod_koblitz(mbedtls_mpi *N, mbedtls_mpi_uint *Rp, size_t p
 
     /* Init R */
     R.s = 1;
-    R.p = Rp;
+    R.p = (mbedtls_mpi_uint *) Rp; /* R.p will not be modified so the cast is safe */
     R.n = P_KOBLITZ_R;
 
     /* Common setup for M */
@@ -1433,7 +1433,7 @@ cleanup:
  */
 static int ecp_mod_p192k1(mbedtls_mpi *N)
 {
-    static mbedtls_mpi_uint Rp[] = {
+    static const mbedtls_mpi_uint Rp[] = {
         MBEDTLS_BYTES_TO_T_UINT_8(0xC9, 0x11, 0x00, 0x00, 0x01, 0x00, 0x00,
                                   0x00)
     };
@@ -1450,7 +1450,7 @@ static int ecp_mod_p192k1(mbedtls_mpi *N)
  */
 static int ecp_mod_p224k1(mbedtls_mpi *N)
 {
-    static mbedtls_mpi_uint Rp[] = {
+    static const mbedtls_mpi_uint Rp[] = {
         MBEDTLS_BYTES_TO_T_UINT_8(0x93, 0x1A, 0x00, 0x00, 0x01, 0x00, 0x00,
                                   0x00)
     };
@@ -1472,7 +1472,7 @@ static int ecp_mod_p224k1(mbedtls_mpi *N)
  */
 static int ecp_mod_p256k1(mbedtls_mpi *N)
 {
-    static mbedtls_mpi_uint Rp[] = {
+    static const mbedtls_mpi_uint Rp[] = {
         MBEDTLS_BYTES_TO_T_UINT_8(0xD1, 0x03, 0x00, 0x00, 0x01, 0x00, 0x00,
                                   0x00)
     };
diff --git a/library/entropy_poll.c b/library/entropy_poll.c
index cde49e66a0..f007f2d8d4 100644
--- a/library/entropy_poll.c
+++ b/library/entropy_poll.c
@@ -5,7 +5,7 @@
  *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
-#if defined(__linux__) && !defined(_GNU_SOURCE)
+#if defined(__linux__) || defined(__midipix__) && !defined(_GNU_SOURCE)
 /* Ensure that syscall() is available even when compiling with -std=c99 */
 #define _GNU_SOURCE
 #endif
diff --git a/library/pk_wrap.c b/library/pk_wrap.c
index 14c6d3f99c..dd460a6a0c 100644
--- a/library/pk_wrap.c
+++ b/library/pk_wrap.c
@@ -53,7 +53,23 @@ static int rsa_can_do(mbedtls_pk_type_t type)
 static size_t rsa_get_bitlen(const void *ctx)
 {
     const mbedtls_rsa_context *rsa = (const mbedtls_rsa_context *) ctx;
-    return 8 * mbedtls_rsa_get_len(rsa);
+    /* Unfortunately, the rsa.h interface does not have a direct way
+     * to access the bit-length that works with MBEDTLS_RSA_ALT.
+     * So we have to do a little work here.
+     */
+    mbedtls_mpi N;
+    mbedtls_mpi_init(&N);
+    int ret = mbedtls_rsa_export(rsa, &N, NULL, NULL, NULL, NULL);
+    /* If the export fails for some reason (e.g. the RSA_ALT implementation
+     * does not support export, or there is not enough memory),
+     * we have no way of returning an error from this function.
+     * As a fallback, return the byte-length converted in bits, which is
+     * the correct  value if the modulus size is a multiple of 8 bits, which
+     * is very often the case in practice. */
+    size_t bitlen = (ret == 0 ? mbedtls_mpi_bitlen(&N) :
+                     8 * mbedtls_rsa_get_len(rsa));
+    mbedtls_mpi_free(&N);
+    return bitlen;
 }
 
 static int rsa_verify_wrap(void *ctx, mbedtls_md_type_t md_alg,
diff --git a/library/platform_util.c b/library/platform_util.c
index a86b07fa3f..df34167a8f 100644
--- a/library/platform_util.c
+++ b/library/platform_util.c
@@ -66,10 +66,10 @@ void mbedtls_platform_zeroize(void *buf, size_t len)
 #include <time.h>
 #if !defined(_WIN32) && (defined(unix) || \
     defined(__unix) || defined(__unix__) || (defined(__APPLE__) && \
-    defined(__MACH__)))
+    defined(__MACH__)) || defined(__midipix__))
 #include <unistd.h>
 #endif /* !_WIN32 && (unix || __unix || __unix__ ||
-        * (__APPLE__ && __MACH__)) */
+        * (__APPLE__ && __MACH__)) || __midipix__ */
 
 #if !((defined(_POSIX_VERSION) && _POSIX_VERSION >= 200809L) ||     \
     (defined(_POSIX_THREAD_SAFE_FUNCTIONS) &&                     \
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index f3335374a7..0a94c8fc1d 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -4822,21 +4822,10 @@ static psa_status_t psa_hash_try_support(psa_algorithm_t alg)
     return status;
 }
 
-static psa_status_t psa_key_derivation_setup_kdf(
+static psa_status_t psa_key_derivation_set_maximum_capacity(
     psa_key_derivation_operation_t *operation,
     psa_algorithm_t kdf_alg)
 {
-    /* Make sure that operation->ctx is properly zero-initialised. (Macro
-     * initialisers for this union leave some bytes unspecified.) */
-    memset(&operation->ctx, 0, sizeof(operation->ctx));
-
-    /* Make sure that kdf_alg is a supported key derivation algorithm. */
-    if (!is_kdf_alg_supported(kdf_alg)) {
-        return PSA_ERROR_NOT_SUPPORTED;
-    }
-
-    /* All currently supported key derivation algorithms are based on a
-     * hash algorithm. */
     psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH(kdf_alg);
     size_t hash_size = PSA_HASH_LENGTH(hash_alg);
     if (hash_size == 0) {
@@ -4851,14 +4840,48 @@ static psa_status_t psa_key_derivation_setup_kdf(
         return status;
     }
 
-    if ((PSA_ALG_IS_TLS12_PRF(kdf_alg) ||
-         PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) &&
-        !(hash_alg == PSA_ALG_SHA_256 || hash_alg == PSA_ALG_SHA_384)) {
+#if defined(PSA_WANT_ALG_HKDF)
+    if (PSA_ALG_IS_HKDF(kdf_alg)) {
+        operation->capacity = 255 * hash_size;
+    } else
+#endif
+#if defined(PSA_WANT_ALG_TLS12_PRF)
+    if (PSA_ALG_IS_TLS12_PRF(kdf_alg) &&
+        (hash_alg == PSA_ALG_SHA_256 || hash_alg == PSA_ALG_SHA_384)) {
+        operation->capacity = SIZE_MAX;
+    } else
+#endif
+#if defined(PSA_WANT_ALG_TLS12_PSK_TO_MS)
+    if (PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg) &&
+        (hash_alg == PSA_ALG_SHA_256 || hash_alg == PSA_ALG_SHA_384)) {
+        /* Master Secret is always 48 bytes
+         * https://datatracker.ietf.org/doc/html/rfc5246.html#section-8.1 */
+        operation->capacity = 48U;
+    } else
+#endif
+    {
+        (void) hash_size;
+        status = PSA_ERROR_NOT_SUPPORTED;
+    }
+    return status;
+}
+
+
+static psa_status_t psa_key_derivation_setup_kdf(
+    psa_key_derivation_operation_t *operation,
+    psa_algorithm_t kdf_alg)
+{
+    /* Make sure that operation->ctx is properly zero-initialised. (Macro
+     * initialisers for this union leave some bytes unspecified.) */
+    memset(&operation->ctx, 0, sizeof(operation->ctx));
+    /* Make sure that kdf_alg is a supported key derivation algorithm. */
+    if (!is_kdf_alg_supported(kdf_alg)) {
         return PSA_ERROR_NOT_SUPPORTED;
     }
 
-    operation->capacity = 255 * hash_size;
-    return PSA_SUCCESS;
+    psa_status_t status = psa_key_derivation_set_maximum_capacity(operation,
+                                                                  kdf_alg);
+    return status;
 }
 
 static psa_status_t psa_key_agreement_try_support(psa_algorithm_t alg)
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 6ba3e6964e..235959a9ee 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -5204,6 +5204,12 @@ const mbedtls_ssl_session *mbedtls_ssl_get_session_pointer(const mbedtls_ssl_con
 #define SSL_SERIALIZED_SESSION_CONFIG_CRT 0
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
 
+#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
+#define SSL_SERIALIZED_SESSION_CONFIG_KEEP_PEER_CRT 1
+#else
+#define SSL_SERIALIZED_SESSION_CONFIG_KEEP_PEER_CRT 0
+#endif /* MBEDTLS_SSL_SESSION_TICKETS */
+
 #if defined(MBEDTLS_SSL_CLI_C) && defined(MBEDTLS_SSL_SESSION_TICKETS)
 #define SSL_SERIALIZED_SESSION_CONFIG_CLIENT_TICKET 1
 #else
@@ -5241,6 +5247,7 @@ const mbedtls_ssl_session *mbedtls_ssl_get_session_pointer(const mbedtls_ssl_con
 #define SSL_SERIALIZED_SESSION_CONFIG_TRUNC_HMAC_BIT    4
 #define SSL_SERIALIZED_SESSION_CONFIG_ETM_BIT           5
 #define SSL_SERIALIZED_SESSION_CONFIG_TICKET_BIT        6
+#define SSL_SERIALIZED_SESSION_CONFIG_KEEP_PEER_CRT_BIT 7
 
 #define SSL_SERIALIZED_SESSION_CONFIG_BITFLAG                           \
     ((uint16_t) (                                                      \
@@ -5252,9 +5259,11 @@ const mbedtls_ssl_session *mbedtls_ssl_get_session_pointer(const mbedtls_ssl_con
          (SSL_SERIALIZED_SESSION_CONFIG_TRUNC_HMAC << \
              SSL_SERIALIZED_SESSION_CONFIG_TRUNC_HMAC_BIT) | \
          (SSL_SERIALIZED_SESSION_CONFIG_ETM << SSL_SERIALIZED_SESSION_CONFIG_ETM_BIT) | \
-         (SSL_SERIALIZED_SESSION_CONFIG_TICKET << SSL_SERIALIZED_SESSION_CONFIG_TICKET_BIT)))
+         (SSL_SERIALIZED_SESSION_CONFIG_TICKET << SSL_SERIALIZED_SESSION_CONFIG_TICKET_BIT) | \
+         (SSL_SERIALIZED_SESSION_CONFIG_KEEP_PEER_CRT << \
+             SSL_SERIALIZED_SESSION_CONFIG_KEEP_PEER_CRT_BIT)))
 
-static unsigned char ssl_serialized_session_header[] = {
+static const unsigned char ssl_serialized_session_header[] = {
     MBEDTLS_VERSION_MAJOR,
     MBEDTLS_VERSION_MINOR,
     MBEDTLS_VERSION_PATCH,
@@ -5278,19 +5287,36 @@ static unsigned char ssl_serialized_session_header[] = {
  *                               // the setting of those compile-time
  *                               // configuration options which influence
  *                               // the structure of mbedtls_ssl_session.
- *  uint64 start_time;
- *  uint8 ciphersuite[2];        // defined by the standard
- *  uint8 compression;           // 0 or 1
- *  uint8 session_id_len;        // at most 32
- *  opaque session_id[32];
- *  opaque master[48];           // fixed length in the standard
- *  uint32 verify_result;
- *  opaque peer_cert<0..2^24-1>; // length 0 means no peer cert
- *  opaque ticket<0..2^24-1>;    // length 0 means no ticket
- *  uint32 ticket_lifetime;
- *  uint8 mfl_code;              // up to 255 according to standard
- *  uint8 trunc_hmac;            // 0 or 1
- *  uint8 encrypt_then_mac;      // 0 or 1
+ * #if defined(MBEDTLS_HAVE_TIME)
+ *     uint64 start_time;
+ * #endif
+ *     uint8 ciphersuite[2];        // defined by the standard
+ *     uint8 compression;           // 0 or 1
+ *     uint8 session_id_len;        // at most 32
+ *     opaque session_id[32];
+ *     opaque master[48];           // fixed length in the standard
+ *     uint32 verify_result;
+ * #if defined(MBEDTLS_X509_CRT_PARSE_C)
+ * #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
+ *     opaque peer_cert<0..2^24-1>; // length 0 means no peer cert
+ * #else
+ *     uint8 peer_cert_digest_type;
+ *     opaque peer_cert_digest<0..2^8-1>
+ * #endif
+ * #endif
+ * #if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
+ *     opaque ticket<0..2^24-1>;    // length 0 means no ticket
+ *     uint32 ticket_lifetime;
+ * #endif
+ * #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
+ *     uint8 mfl_code;              // up to 255 according to standard
+ * #endif
+ * #if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
+ *     uint8 trunc_hmac;            // 0 or 1
+ * #endif
+ * #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
+ *     uint8 encrypt_then_mac;      // 0 or 1
+ * #endif
  *
  * The order is the same as in the definition of the structure, except
  * verify_result is put before peer_cert so that all mandatory fields come
@@ -6123,7 +6149,7 @@ void mbedtls_ssl_session_free(mbedtls_ssl_session *session)
          (SSL_SERIALIZED_CONTEXT_CONFIG_ALPN << SSL_SERIALIZED_CONTEXT_CONFIG_ALPN_BIT) | \
          0u))
 
-static unsigned char ssl_serialized_context_header[] = {
+static const unsigned char ssl_serialized_context_header[] = {
     MBEDTLS_VERSION_MAJOR,
     MBEDTLS_VERSION_MINOR,
     MBEDTLS_VERSION_PATCH,
@@ -6821,7 +6847,7 @@ void mbedtls_ssl_config_init(mbedtls_ssl_config *conf)
 }
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
-static int ssl_preset_default_hashes[] = {
+static const int ssl_preset_default_hashes[] = {
 #if defined(MBEDTLS_SHA512_C)
     MBEDTLS_MD_SHA512,
 #endif
@@ -6839,14 +6865,14 @@ static int ssl_preset_default_hashes[] = {
 };
 #endif
 
-static int ssl_preset_suiteb_ciphersuites[] = {
+static const int ssl_preset_suiteb_ciphersuites[] = {
     MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
     MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
     0
 };
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
-static int ssl_preset_suiteb_hashes[] = {
+static const int ssl_preset_suiteb_hashes[] = {
     MBEDTLS_MD_SHA256,
     MBEDTLS_MD_SHA384,
     MBEDTLS_MD_NONE
@@ -6854,7 +6880,7 @@ static int ssl_preset_suiteb_hashes[] = {
 #endif
 
 #if defined(MBEDTLS_ECP_C)
-static mbedtls_ecp_group_id ssl_preset_suiteb_curves[] = {
+static const mbedtls_ecp_group_id ssl_preset_suiteb_curves[] = {
 #if defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
     MBEDTLS_ECP_DP_SECP256R1,
 #endif
diff --git a/programs/pkey/gen_key.c b/programs/pkey/gen_key.c
index 8ad2627667..eab5c30ac3 100644
--- a/programs/pkey/gen_key.c
+++ b/programs/pkey/gen_key.c
@@ -188,6 +188,7 @@ int main(int argc, char *argv[])
     mbedtls_mpi_init(&D); mbedtls_mpi_init(&E); mbedtls_mpi_init(&DP);
     mbedtls_mpi_init(&DQ); mbedtls_mpi_init(&QP);
 
+    mbedtls_entropy_init(&entropy);
     mbedtls_pk_init(&key);
     mbedtls_ctr_drbg_init(&ctr_drbg);
     memset(buf, 0, sizeof(buf));
@@ -275,7 +276,6 @@ usage:
     mbedtls_printf("\n  . Seeding the random number generator...");
     fflush(stdout);
 
-    mbedtls_entropy_init(&entropy);
 #if !defined(_WIN32) && defined(MBEDTLS_FS_IO)
     if (opt.use_dev_random) {
         if ((ret = mbedtls_entropy_add_source(&entropy, dev_random_entropy_poll,
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index 161ff3a178..d01202fb68 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -731,7 +731,7 @@ int main(int argc, char *argv[])
     mbedtls_net_init(&server_fd);
     mbedtls_ssl_init(&ssl);
     mbedtls_ssl_config_init(&conf);
-    memset(&saved_session, 0, sizeof(mbedtls_ssl_session));
+    mbedtls_ssl_session_init(&saved_session);
     rng_init(&rng);
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
     mbedtls_x509_crt_init(&cacert);
diff --git a/scripts/generate_visualc_files.pl b/scripts/generate_visualc_files.pl
index 11604cd9c0..b27f795fca 100755
--- a/scripts/generate_visualc_files.pl
+++ b/scripts/generate_visualc_files.pl
@@ -168,7 +168,7 @@ sub gen_app {
 }
 
 sub get_app_list {
-    my $app_list = `cd $programs_dir && make list`;
+    my $app_list = `cd $programs_dir && VERBOSE_LOGS=1 make list`;
     die "make list failed: $!\n" if $?;
 
     return split /\s+/, $app_list;
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 8661263e09..345cfd67e4 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -195,10 +195,21 @@ pre_initialize_variables () {
     # defined in this script whose name starts with "component_".
     ALL_COMPONENTS=$(compgen -A function component_ | sed 's/component_//')
 
-    # Delay determinig SUPPORTED_COMPONENTS until the command line options have a chance to override
+    # Delay determining SUPPORTED_COMPONENTS until the command line options have a chance to override
     # the commands set by the environment
 }
 
+setup_quiet_wrappers()
+{
+    # Pick up "quiet" wrappers for make and cmake, which don't output very much
+    # unless there is an error. This reduces logging overhead in the CI.
+    #
+    # Note that the cmake wrapper breaks unless we use an absolute path here.
+    if [[ -e ${PWD}/tests/scripts/quiet ]]; then
+        export PATH=${PWD}/tests/scripts/quiet:$PATH
+    fi
+}
+
 # Test whether the component $1 is included in the command line patterns.
 is_component_included()
 {
@@ -1008,6 +1019,9 @@ EOF
 }
 
 component_test_zlib_cmake() {
+    # This is needed due to something parsing the output from make
+    export VERBOSE_LOGS=1
+
     msg "build: zlib enabled, cmake"
     scripts/config.py set MBEDTLS_ZLIB_SUPPORT
     cmake -D ENABLE_ZLIB_SUPPORT=On -D CMAKE_BUILD_TYPE:String=Release .
@@ -3744,6 +3758,7 @@ pre_check_environment
 pre_initialize_variables
 pre_parse_command_line "$@"
 
+setup_quiet_wrappers
 pre_check_git
 pre_restore_files
 pre_back_up
diff --git a/tests/scripts/check_files.py b/tests/scripts/check_files.py
index a2a9dfa8d0..837905eada 100755
--- a/tests/scripts/check_files.py
+++ b/tests/scripts/check_files.py
@@ -172,6 +172,8 @@ class ShebangIssueTracker(FileIssueTracker):
         b'sh': 'sh',
     }
 
+    path_exemptions = re.compile(r'tests/scripts/quiet/.*')
+
     def is_valid_shebang(self, first_line, filepath):
         m = re.match(self._shebang_re, first_line)
         if not m:
diff --git a/tests/scripts/depends.py b/tests/scripts/depends.py
index c6a438ee36..346f6ff710 100755
--- a/tests/scripts/depends.py
+++ b/tests/scripts/depends.py
@@ -192,7 +192,10 @@ and subsequent commands are tests that cannot run if the build failed).'''
         success = True
         for command in self.commands:
             log_command(command)
-            ret = subprocess.call(command)
+            env = os.environ.copy()
+            if 'MBEDTLS_TEST_CONFIGURATION' in env:
+                env['MBEDTLS_TEST_CONFIGURATION'] += '-' + self.name
+            ret = subprocess.call(command, env=env)
             if ret != 0:
                 if command[0] not in ['make', options.make_command]:
                     log_line('*** [{}] Error {}'.format(' '.join(command), ret))
diff --git a/tests/scripts/quiet/cmake b/tests/scripts/quiet/cmake
new file mode 100755
index 0000000000..930931d539
--- /dev/null
+++ b/tests/scripts/quiet/cmake
@@ -0,0 +1,19 @@
+#! /usr/bin/env bash
+#
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+#
+# This swallows the output of the wrapped tool, unless there is an error.
+# This helps reduce excess logging in the CI.
+
+# If you are debugging a build / CI issue, you can get complete unsilenced logs
+# by un-commenting the following line (or setting VERBOSE_LOGS in your environment):
+
+# export VERBOSE_LOGS=1
+
+# don't silence invocations containing these arguments
+export NO_SILENCE=" --version "
+
+export TOOL="cmake"
+
+exec "$(dirname "$0")/quiet.sh" "$@"
diff --git a/tests/scripts/quiet/make b/tests/scripts/quiet/make
new file mode 100755
index 0000000000..d022551df1
--- /dev/null
+++ b/tests/scripts/quiet/make
@@ -0,0 +1,19 @@
+#! /usr/bin/env bash
+#
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+#
+# This swallows the output of the wrapped tool, unless there is an error.
+# This helps reduce excess logging in the CI.
+
+# If you are debugging a build / CI issue, you can get complete unsilenced logs
+# by un-commenting the following line (or setting VERBOSE_LOGS in your environment):
+
+# export VERBOSE_LOGS=1
+
+# don't silence invocations containing these arguments
+export NO_SILENCE=" --version | test "
+
+export TOOL="make"
+
+exec "$(dirname "$0")/quiet.sh" "$@"
diff --git a/tests/scripts/quiet/quiet.sh b/tests/scripts/quiet/quiet.sh
new file mode 100755
index 0000000000..30ee569a22
--- /dev/null
+++ b/tests/scripts/quiet/quiet.sh
@@ -0,0 +1,75 @@
+# -*-mode: sh; sh-shell: bash -*-
+#
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+#
+# This swallows the output of the wrapped tool, unless there is an error.
+# This helps reduce excess logging in the CI.
+
+# If you are debugging a build / CI issue, you can get complete unsilenced logs
+# by un-commenting the following line (or setting VERBOSE_LOGS in your environment):
+#
+# VERBOSE_LOGS=1
+#
+# This script provides most of the functionality for the adjacent make and cmake
+# wrappers.
+#
+# It requires two variables to be set:
+#
+# TOOL       - the name of the tool that is being wrapped (with no path), e.g. "make"
+#
+# NO_SILENCE - a regex that describes the commandline arguments for which output will not
+#              be silenced, e.g. " --version | test ". In this example, "make lib test" will
+#              not be silent, but "make lib" will be.
+
+# Locate original tool
+TOOL_WITH_PATH=$(dirname "$0")/$TOOL
+ORIGINAL_TOOL=$(type -ap "${TOOL}" | grep -v -Fx "$TOOL_WITH_PATH" | head -n1)
+
+print_quoted_args() {
+    # similar to printf '%q' "$@"
+    # but produce more human-readable results for common/simple cases like "a b"
+    for a in "$@"; do
+        # Get bash to quote the string
+        printf -v q '%q' "$a"
+        simple_pattern="^([-[:alnum:]_+./:@]+=)?([^']*)$"
+        if [[ "$a" != "$q" && $a =~ $simple_pattern ]]; then
+            # a requires some quoting (a != q), but has no single quotes, so we can
+            # simplify the quoted form - e.g.:
+            #   a b        -> 'a b'
+            #   CFLAGS=a b -> CFLAGS='a b'
+            q="${BASH_REMATCH[1]}'${BASH_REMATCH[2]}'"
+        fi
+        printf " %s" "$q"
+    done
+}
+
+if [[ ! " $* " =~ " --version " ]]; then
+    # Display the command being invoked - if it succeeds, this is all that will
+    # be displayed. Don't do this for invocations with --version, because
+    # this output is often parsed by scripts, so we don't want to modify it.
+    printf %s "${TOOL}"    1>&2
+    print_quoted_args "$@" 1>&2
+    echo                   1>&2
+fi
+
+if [[ " $@ " =~ $NO_SILENCE || -n "${VERBOSE_LOGS}" ]]; then
+    # Run original command with no output supression
+    exec "${ORIGINAL_TOOL}" "$@"
+else
+    # Run original command and capture output & exit status
+    TMPFILE=$(mktemp "quiet-${TOOL}.XXXXXX")
+    "${ORIGINAL_TOOL}" "$@" > "${TMPFILE}" 2>&1
+    EXIT_STATUS=$?
+
+    if [[ $EXIT_STATUS -ne 0 ]]; then
+        # On error, display the full output
+        cat "${TMPFILE}"
+    fi
+
+    # Remove tmpfile
+    rm "${TMPFILE}"
+
+    # Propagate the exit status
+    exit $EXIT_STATUS
+fi
diff --git a/tests/suites/test_suite_ecp.data b/tests/suites/test_suite_ecp.data
index 6211fb7297..a244bc4602 100644
--- a/tests/suites/test_suite_ecp.data
+++ b/tests/suites/test_suite_ecp.data
@@ -550,6 +550,122 @@ ECP read key #16 (Curve25519 RFC, OK)
 depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
 mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE25519:"70076d0a7318a57d3c16c17251b26645df4c2f87ebc0992ab177fba51db92c6a":0:1
 
+ECP write key: secp256r1, nominal
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"f12a1320760270a83cbffd53f6031ef76a5d86c8a204f2c30ca9ebf51f0f0ea7":32:0
+
+ECP write key: secp256r1, output longer by 1
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"f12a1320760270a83cbffd53f6031ef76a5d86c8a204f2c30ca9ebf51f0f0ea7":33:0
+
+ECP write key: secp256r1, output longer by 32
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"f12a1320760270a83cbffd53f6031ef76a5d86c8a204f2c30ca9ebf51f0f0ea7":64:0
+
+ECP write key: secp256r1, output longer by 33
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"f12a1320760270a83cbffd53f6031ef76a5d86c8a204f2c30ca9ebf51f0f0ea7":65:0
+
+ECP write key: secp256r1, output short by 1
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"f12a1320760270a83cbffd53f6031ef76a5d86c8a204f2c30ca9ebf51f0f0ea7":31:MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL
+
+ECP write key: secp256r1, output_size=1
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"f12a1320760270a83cbffd53f6031ef76a5d86c8a204f2c30ca9ebf51f0f0ea7":1:MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL
+
+ECP write key: secp256r1, output_size=0
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"f12a1320760270a83cbffd53f6031ef76a5d86c8a204f2c30ca9ebf51f0f0ea7":0:MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL
+
+ECP write key: secp256r1, top byte = 0, output_size=32
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"00ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff":32:0
+
+ECP write key: secp256r1, top byte = 0, output_size=31 (fits)
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"00ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff":31:0
+
+ECP write key: secp256r1, top byte = 0, output_size=30 (too small)
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"00ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff":30:MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL
+
+ECP write key: secp256r1, mostly-0 key, output_size=32
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"0000000000000000000000000000000000000000000000000000000000000001":32:0
+
+ECP write key: secp256r1, mostly-0 key, output_size=31 (fits)
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"0000000000000000000000000000000000000000000000000000000000000001":31:0
+
+ECP write key: secp256r1, mostly-0 key, output_size=1 (fits)
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP256R1:"0000000000000000000000000000000000000000000000000000000000000001":1:0
+
+ECP write key: secp384r1, nominal
+depends_on:MBEDTLS_ECP_DP_SECP384R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP384R1:"d27335ea71664af244dd14e9fd1260715dfd8a7965571c48d709ee7a7962a156d706a90cbcb5df2986f05feadb9376f1":48:0
+
+ECP write key: secp384r1, output longer by 1
+depends_on:MBEDTLS_ECP_DP_SECP384R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP384R1:"d27335ea71664af244dd14e9fd1260715dfd8a7965571c48d709ee7a7962a156d706a90cbcb5df2986f05feadb9376f1":49:0
+
+ECP write key: secp384r1, output longer by 48
+depends_on:MBEDTLS_ECP_DP_SECP384R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP384R1:"d27335ea71664af244dd14e9fd1260715dfd8a7965571c48d709ee7a7962a156d706a90cbcb5df2986f05feadb9376f1":96:0
+
+ECP write key: secp384r1, output longer by 49
+depends_on:MBEDTLS_ECP_DP_SECP384R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP384R1:"d27335ea71664af244dd14e9fd1260715dfd8a7965571c48d709ee7a7962a156d706a90cbcb5df2986f05feadb9376f1":97:0
+
+ECP write key: secp384r1, output short by 1
+depends_on:MBEDTLS_ECP_DP_SECP384R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP384R1:"d27335ea71664af244dd14e9fd1260715dfd8a7965571c48d709ee7a7962a156d706a90cbcb5df2986f05feadb9376f1":47:MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL
+
+ECP write key: secp384r1, output_size=1
+depends_on:MBEDTLS_ECP_DP_SECP384R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP384R1:"d27335ea71664af244dd14e9fd1260715dfd8a7965571c48d709ee7a7962a156d706a90cbcb5df2986f05feadb9376f1":1:MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL
+
+ECP write key: secp384r1, output_size=0
+depends_on:MBEDTLS_ECP_DP_SECP384R1_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_SECP384R1:"d27335ea71664af244dd14e9fd1260715dfd8a7965571c48d709ee7a7962a156d706a90cbcb5df2986f05feadb9376f1":0:MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL
+
+ECP write key: Curve25519, nominal
+depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_CURVE25519:"a046e36bf0527c9d3b16154b82465edd62144c0ac1fc5a18506a2244ba449a44":32:0
+
+ECP write key: Curve25519, output longer by 1
+depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_CURVE25519:"a046e36bf0527c9d3b16154b82465edd62144c0ac1fc5a18506a2244ba449a44":33:0
+
+ECP write key: Curve25519, output longer by 32
+depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_CURVE25519:"a046e36bf0527c9d3b16154b82465edd62144c0ac1fc5a18506a2244ba449a44":64:0
+
+ECP write key: Curve25519, output longer by 33
+depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_CURVE25519:"a046e36bf0527c9d3b16154b82465edd62144c0ac1fc5a18506a2244ba449a44":65:0
+
+ECP write key: Curve25519, output short by 1
+depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_CURVE25519:"a046e36bf0527c9d3b16154b82465edd62144c0ac1fc5a18506a2244ba449a44":31:MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL
+
+ECP write key: Curve25519, output_size=1
+depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_CURVE25519:"a046e36bf0527c9d3b16154b82465edd62144c0ac1fc5a18506a2244ba449a44":1:MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL
+
+ECP write key: Curve25519, output_size=0
+depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_CURVE25519:"a046e36bf0527c9d3b16154b82465edd62144c0ac1fc5a18506a2244ba449a44":0:MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL
+
+ECP write key: Curve25519, mostly-0 key, output_size=32
+depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_CURVE25519:"0000000000000000000000000000000000000000000000000000000000000040":32:0
+
+ECP write key: Curve25519, mostly-0 key, output_size=31
+depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
+ecp_write_key:MBEDTLS_ECP_DP_CURVE25519:"0000000000000000000000000000000000000000000000000000000000000040":31:MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL
+
 ECP mod p192 small (more than 192 bits, less limbs than 2 * 192 bits)
 depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
 ecp_fast_mod:MBEDTLS_ECP_DP_SECP192R1:"0100000000000103010000000000010201000000000001010100000000000100"
diff --git a/tests/suites/test_suite_ecp.function b/tests/suites/test_suite_ecp.function
index 443bc0861b..da137200ba 100644
--- a/tests/suites/test_suite_ecp.function
+++ b/tests/suites/test_suite_ecp.function
@@ -1383,6 +1383,66 @@ exit:
 }
 /* END_CASE */
 
+/* BEGIN_CASE */
+void ecp_write_key(int grp_id, data_t *in_key,
+                   int exported_size, int expected_ret)
+{
+    mbedtls_ecp_keypair key;
+    mbedtls_ecp_keypair_init(&key);
+    unsigned char *exported = NULL;
+
+    TEST_EQUAL(mbedtls_ecp_read_key(grp_id, &key, in_key->x, in_key->len), 0);
+
+    TEST_CALLOC(exported, exported_size);
+    TEST_EQUAL(mbedtls_ecp_write_key(&key, exported, exported_size),
+               expected_ret);
+
+    if (expected_ret == 0) {
+        size_t length = (key.grp.nbits + 7) / 8;
+        const unsigned char *key_start = NULL;
+        const unsigned char *zeros_start = NULL;
+        switch (mbedtls_ecp_get_type(&key.grp)) {
+            case MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS:
+                if ((size_t) exported_size < length) {
+                    length = exported_size;
+                }
+                key_start = exported + exported_size - length;
+                zeros_start = exported;
+                break;
+            case MBEDTLS_ECP_TYPE_MONTGOMERY:
+                TEST_LE_U(length, exported_size);
+                key_start = exported;
+                zeros_start = exported + length;
+                break;
+            default:
+                TEST_FAIL("Unknown ECP curve type");
+                break;
+        }
+
+        if (length < in_key->len) {
+            /* Shorter output (only possible with Weierstrass keys) */
+            for (size_t i = 0; i < in_key->len - length; i++) {
+                mbedtls_test_set_step(i);
+                TEST_EQUAL(in_key->x[i], 0);
+            }
+            TEST_MEMORY_COMPARE(in_key->x + in_key->len - length, length,
+                                key_start, length);
+        } else {
+            TEST_MEMORY_COMPARE(in_key->x, in_key->len,
+                                key_start, length);
+            for (size_t i = 0; i < exported_size - length; i++) {
+                mbedtls_test_set_step(i);
+                TEST_EQUAL(zeros_start[i], 0);
+            }
+        }
+    }
+
+exit:
+    mbedtls_ecp_keypair_free(&key);
+    mbedtls_free(exported);
+}
+/* END_CASE */
+
 /* BEGIN_CASE depends_on:HAVE_FIX_NEGATIVE */
 void fix_negative(data_t *N_bin, int c, int bits)
 {
diff --git a/tests/suites/test_suite_pk.data b/tests/suites/test_suite_pk.data
index 52480741a8..ee545293e7 100644
--- a/tests/suites/test_suite_pk.data
+++ b/tests/suites/test_suite_pk.data
@@ -12,6 +12,19 @@ PK utils: RSA 512-bit
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
 pk_utils:MBEDTLS_PK_RSA:512:512:64:"RSA"
 
+# mbedtls_rsa_gen_key() only supports even sizes, so we don't test 513 etc.
+PK utils: RSA 514-bit
+depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
+pk_utils:MBEDTLS_PK_RSA:514:514:65:"RSA"
+
+PK utils: RSA 516-bit
+depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
+pk_utils:MBEDTLS_PK_RSA:516:516:65:"RSA"
+
+PK utils: RSA 518-bit
+depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
+pk_utils:MBEDTLS_PK_RSA:518:518:65:"RSA"
+
 PK utils: ECKEY SECP192R1
 depends_on:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP192R1_ENABLED
 pk_utils:MBEDTLS_PK_ECKEY:MBEDTLS_ECP_DP_SECP192R1:192:24:"EC"
diff --git a/tests/suites/test_suite_pk.function b/tests/suites/test_suite_pk.function
index c17037f079..9d3570e335 100644
--- a/tests/suites/test_suite_pk.function
+++ b/tests/suites/test_suite_pk.function
@@ -18,6 +18,13 @@
 #define RSA_KEY_SIZE 512
 #define RSA_KEY_LEN   64
 
+#if defined(MBEDTLS_RSA_C) ||                                           \
+    defined(MBEDTLS_PK_RSA_ALT_SUPPORT) ||                              \
+    defined(MBEDTLS_ECDSA_C) ||                                         \
+    defined(MBEDTLS_USE_PSA_CRYPTO)
+#define PK_CAN_SIGN_SOME
+#endif
+
 /** Generate a key of the desired type.
  *
  * \param pk        The PK object to fill. It must have been initialized
@@ -155,7 +162,7 @@ void pk_psa_utils()
     TEST_ASSERT(strcmp(mbedtls_pk_get_name(&pk), name) == 0);
 
     TEST_ASSERT(mbedtls_pk_get_bitlen(&pk) == bitlen);
-    TEST_ASSERT(mbedtls_pk_get_len(&pk) == bitlen / 8);
+    TEST_ASSERT(mbedtls_pk_get_len(&pk) == (bitlen + 7) / 8);
 
     TEST_ASSERT(mbedtls_pk_can_do(&pk, MBEDTLS_PK_ECKEY) == 1);
     TEST_ASSERT(mbedtls_pk_can_do(&pk, MBEDTLS_PK_ECDSA) == 1);
@@ -683,7 +690,7 @@ void pk_rsa_verify_test_vec(data_t *message_str, int digest, int mod,
     TEST_ASSERT(mbedtls_pk_setup(&pk, mbedtls_pk_info_from_type(MBEDTLS_PK_RSA)) == 0);
     rsa = mbedtls_pk_rsa(pk);
 
-    rsa->len = mod / 8;
+    rsa->len = (mod + 7) / 8;
     TEST_ASSERT(mbedtls_test_read_mpi(&rsa->N, input_N) == 0);
     TEST_ASSERT(mbedtls_test_read_mpi(&rsa->E, input_E) == 0);
 
@@ -731,7 +738,7 @@ void pk_rsa_verify_ext_test_vec(data_t *message_str, int digest,
     TEST_ASSERT(mbedtls_pk_setup(&pk, mbedtls_pk_info_from_type(MBEDTLS_PK_RSA)) == 0);
     rsa = mbedtls_pk_rsa(pk);
 
-    rsa->len = mod / 8;
+    rsa->len = (mod + 7) / 8;
     TEST_ASSERT(mbedtls_test_read_mpi(&rsa->N, input_N) == 0);
     TEST_ASSERT(mbedtls_test_read_mpi(&rsa->E, input_E) == 0);
 
@@ -894,7 +901,7 @@ exit:
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SHA256_C */
+/* BEGIN_CASE depends_on:MBEDTLS_SHA256_C:PK_CAN_SIGN_SOME */
 void pk_sign_verify(int type, int parameter, int sign_ret, int verify_ret)
 {
     mbedtls_pk_context pk;
@@ -1004,7 +1011,7 @@ void pk_rsa_encrypt_test_vec(data_t *message, int mod,
     TEST_ASSERT(mbedtls_pk_setup(&pk, mbedtls_pk_info_from_type(MBEDTLS_PK_RSA)) == 0);
     rsa = mbedtls_pk_rsa(pk);
 
-    rsa->len = mod / 8;
+    rsa->len = (mod + 7) / 8;
     TEST_ASSERT(mbedtls_test_read_mpi(&rsa->N, input_N) == 0);
     TEST_ASSERT(mbedtls_test_read_mpi(&rsa->E, input_E) == 0);
 
@@ -1053,9 +1060,12 @@ void pk_rsa_decrypt_test_vec(data_t *cipher, int mod,
     TEST_ASSERT(mbedtls_test_read_mpi(&P, input_P) == 0);
     TEST_ASSERT(mbedtls_test_read_mpi(&Q, input_Q) == 0);
     TEST_ASSERT(mbedtls_rsa_import(rsa, &N, &P, &Q, NULL, &E) == 0);
-    TEST_ASSERT(mbedtls_rsa_get_len(rsa) == (size_t) (mod / 8));
+    TEST_EQUAL(mbedtls_rsa_get_len(rsa), (mod + 7) / 8);
     TEST_ASSERT(mbedtls_rsa_complete(rsa) == 0);
 
+    TEST_EQUAL(mbedtls_pk_get_bitlen(&pk), mod);
+    TEST_EQUAL(mbedtls_pk_get_len(&pk), (mod + 7) / 8);
+
     /* decryption test */
     memset(output, 0, sizeof(output));
     olen = 0;
diff --git a/tests/suites/test_suite_pkparse.data b/tests/suites/test_suite_pkparse.data
index 9108a215b6..0837636122 100644
--- a/tests/suites/test_suite_pkparse.data
+++ b/tests/suites/test_suite_pkparse.data
@@ -938,6 +938,22 @@ Parse RSA Key #99.2 (PKCS#8 encrypted v2 PBKDF2 DES hmacWithSHA512 DER, 4096-bit
 depends_on:MBEDTLS_DES_C:MBEDTLS_SHA512_C:MBEDTLS_PKCS5_C
 pk_parse_keyfile_rsa:"data_files/rsa_pkcs8_pbes2_pbkdf2_4096_des_sha512.der":"":MBEDTLS_ERR_PK_KEY_INVALID_FORMAT
 
+Parse RSA Key #100.1 (512-bit)
+depends_on:MBEDTLS_PEM_C
+pk_parse_keyfile_rsa:"data_files/rsa512.key":"":0
+
+Parse RSA Key #100.1 (521-bit)
+depends_on:MBEDTLS_PEM_C
+pk_parse_keyfile_rsa:"data_files/rsa521.key":"":0
+
+Parse RSA Key #100.1 (522-bit)
+depends_on:MBEDTLS_PEM_C
+pk_parse_keyfile_rsa:"data_files/rsa522.key":"":0
+
+Parse RSA Key #100.1 (528-bit)
+depends_on:MBEDTLS_PEM_C
+pk_parse_keyfile_rsa:"data_files/rsa528.key":"":0
+
 Parse Public RSA Key #1 (PKCS#8 wrapped)
 depends_on:MBEDTLS_PEM_PARSE_C
 pk_parse_public_keyfile_rsa:"data_files/rsa_pkcs8_2048_public.pem":0
diff --git a/tests/suites/test_suite_pkparse.function b/tests/suites/test_suite_pkparse.function
index d6b698463f..08f27637d5 100644
--- a/tests/suites/test_suite_pkparse.function
+++ b/tests/suites/test_suite_pkparse.function
@@ -32,6 +32,10 @@ void pk_parse_keyfile_rsa(char *key_file, char *password, int result)
         TEST_ASSERT(mbedtls_pk_can_do(&ctx, MBEDTLS_PK_RSA));
         rsa = mbedtls_pk_rsa(ctx);
         TEST_ASSERT(mbedtls_rsa_check_privkey(rsa) == 0);
+
+        /* Test consistency between get_len and get_bitlen */
+        size_t bitlen = mbedtls_pk_get_bitlen(&ctx);
+        TEST_EQUAL(mbedtls_pk_get_len(&ctx), (bitlen + 7) / 8);
     }
 
 exit:
@@ -58,6 +62,10 @@ void pk_parse_public_keyfile_rsa(char *key_file, int result)
         TEST_ASSERT(mbedtls_pk_can_do(&ctx, MBEDTLS_PK_RSA));
         rsa = mbedtls_pk_rsa(ctx);
         TEST_ASSERT(mbedtls_rsa_check_pubkey(rsa) == 0);
+
+        /* Test consistency between get_len and get_bitlen */
+        size_t bitlen = mbedtls_pk_get_bitlen(&ctx);
+        TEST_EQUAL(mbedtls_pk_get_len(&ctx), (bitlen + 7) / 8);
     }
 
 exit:
diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
index c5211f94aa..1ce38095b6 100644
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -3602,6 +3602,25 @@ PSA key derivation: HKDF SHA-1, request too much capacity
 depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_1
 derive_set_capacity:PSA_ALG_HKDF(PSA_ALG_SHA_1):255 * PSA_HASH_LENGTH(PSA_ALG_SHA_1) + 1:PSA_ERROR_INVALID_ARGUMENT
 
+# TLS 1.2 PRF does not have a maximum capacity therefore
+# derive_set_capacity negative test case is not added
+
+PSA key derivation: TLS 1.2 PSK-to-MS SHA-256, request too much capacity
+depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PSK_TO_MS
+derive_set_capacity:PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_256):48U + 1U:PSA_ERROR_INVALID_ARGUMENT
+
+PSA key derivation: TLS 1.2 PSK-to-MS SHA-384, request too much capacity
+depends_on:PSA_WANT_ALG_SHA_384:PSA_WANT_ALG_TLS12_PSK_TO_MS
+derive_set_capacity:PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_384):48U + 1U:PSA_ERROR_INVALID_ARGUMENT
+
+PSA key derivation: TLS 1.2 PRF SHA-256, request maximum capacity
+depends_on:PSA_WANT_ALG_TLS12_PRF:PSA_WANT_ALG_SHA_256
+derive_set_capacity:PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256):SIZE_MAX:PSA_SUCCESS
+
+PSA key derivation: TLS 1.2 PRF SHA-384, request maximum capacity
+depends_on:PSA_WANT_ALG_TLS12_PRF:PSA_WANT_ALG_SHA_384
+derive_set_capacity:PSA_ALG_TLS12_PRF(PSA_ALG_SHA_384):SIZE_MAX:PSA_SUCCESS
+
 PSA key derivation: over capacity 42: output 42+1
 depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
 derive_output:PSA_ALG_HKDF(PSA_ALG_SHA_256):PSA_KEY_DERIVATION_INPUT_SALT:"000102030405060708090a0b0c":PSA_KEY_DERIVATION_INPUT_SECRET:"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":PSA_KEY_DERIVATION_INPUT_INFO:"f0f1f2f3f4f5f6f7f8f9":42:"3cb25f25faacd57a90434f64d0362f2a2d2d0a90cf1a5a4c5db02d56ecc4c5bf34007208d5b887185865":"ff"
@@ -3622,17 +3641,33 @@ PSA key derivation: HKDF SHA-256, read maximum capacity minus 1
 depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
 derive_full:PSA_ALG_HKDF(PSA_ALG_SHA_256):"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":"000102030405060708090a0b0c":"f0f1f2f3f4f5f6f7f8f9":255 * PSA_HASH_LENGTH(PSA_ALG_SHA_256) - 1
 
+PSA key derivation: HKDF SHA-512, read maximum capacity minus 1
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_512
+derive_full:PSA_ALG_HKDF(PSA_ALG_SHA_512):"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":"000102030405060708090a0b0c":"f0f1f2f3f4f5f6f7f8f9":255 * PSA_HASH_LENGTH(PSA_ALG_SHA_512) - 1
+
 PSA key derivation: HKDF SHA-256, read maximum capacity
 depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256
 derive_full:PSA_ALG_HKDF(PSA_ALG_SHA_256):"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":"000102030405060708090a0b0c":"f0f1f2f3f4f5f6f7f8f9":255 * PSA_HASH_LENGTH(PSA_ALG_SHA_256)
 
-PSA key derivation: TLS 1.2 PRF SHA-256, read maximum capacity minus 1
-depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF
-derive_full:PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256):"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":"000102030405060708090a0b0c":"f0f1f2f3f4f5f6f7f8f9":255 * PSA_HASH_LENGTH(PSA_ALG_SHA_256) - 1
+PSA key derivation: HKDF SHA-512, read maximum capacity
+depends_on:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_512
+derive_full:PSA_ALG_HKDF(PSA_ALG_SHA_512):"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":"000102030405060708090a0b0c":"f0f1f2f3f4f5f6f7f8f9":255 * PSA_HASH_LENGTH(PSA_ALG_SHA_512)
 
-PSA key derivation: TLS 1.2 PRF SHA-256, read maximum capacity
-depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PRF
-derive_full:PSA_ALG_TLS12_PRF(PSA_ALG_SHA_256):"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b":"000102030405060708090a0b0c":"f0f1f2f3f4f5f6f7f8f9":255 * PSA_HASH_LENGTH(PSA_ALG_SHA_256)
+PSA key derivation: TLS 1.2 PSK-to-MS SHA-256, read maximum capacity minus 1
+depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PSK_TO_MS
+derive_full:PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_256):"01020304":"5bc0b19b4a8b24b07afe7ec65c471e94a7d518fcef06c3574315255c52afe21b5bc0b19b872b9b26508458f03603744d575f463a11ae7f1b090c012606fd3e9f":"6d617374657220736563726574":47
+
+PSA key derivation: TLS 1.2 PSK-to-MS SHA-384, read maximum capacity minus 1
+depends_on:PSA_WANT_ALG_SHA_384:PSA_WANT_ALG_TLS12_PSK_TO_MS
+derive_full:PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_384):"01020304":"5bc0b19b4a8b24b07afe7ec65c471e94a7d518fcef06c3574315255c52afe21b5bc0b19b872b9b26508458f03603744d575f463a11ae7f1b090c012606fd3e9f":"6d617374657220736563726574":47
+
+PSA key derivation: TLS 1.2 PSK-to-MS SHA-256, read maximum capacity
+depends_on:PSA_WANT_ALG_SHA_256:PSA_WANT_ALG_TLS12_PSK_TO_MS
+derive_full:PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_256):"01020304":"5bc0b19b4a8b24b07afe7ec65c471e94a7d518fcef06c3574315255c52afe21b5bc0b19b872b9b26508458f03603744d575f463a11ae7f1b090c012606fd3e9f":"6d617374657220736563726574":48
+
+PSA key derivation: TLS 1.2 PSK-to-MS SHA-384, read maximum capacity
+depends_on:PSA_WANT_ALG_SHA_384:PSA_WANT_ALG_TLS12_PSK_TO_MS
+derive_full:PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_384):"01020304":"5bc0b19b4a8b24b07afe7ec65c471e94a7d518fcef06c3574315255c52afe21b5bc0b19b872b9b26508458f03603744d575f463a11ae7f1b090c012606fd3e9f":"6d617374657220736563726574":48
 
 PSA key derivation: HKDF SHA-256, exercise AES128-CTR
 depends_on:PSA_WANT_ALG_CTR:PSA_WANT_ALG_HKDF:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_AES
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index 26f7350f0e..02b30d2225 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -4470,7 +4470,7 @@ exit:
 /* END_CASE */
 
 /* BEGIN_CASE */
-void derive_set_capacity(int alg_arg, int capacity_arg,
+void derive_set_capacity(int alg_arg, int64_t capacity_arg,
                          int expected_status_arg)
 {
     psa_algorithm_t alg = alg_arg;
@@ -4792,7 +4792,7 @@ void derive_full(int alg_arg,
     psa_algorithm_t alg = alg_arg;
     size_t requested_capacity = requested_capacity_arg;
     psa_key_derivation_operation_t operation = PSA_KEY_DERIVATION_OPERATION_INIT;
-    unsigned char output_buffer[16];
+    unsigned char output_buffer[32];
     size_t expected_capacity = requested_capacity;
     size_t current_capacity;
     psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;