diff --git a/ChangeLog.d/pk-norsa-warning.txt b/ChangeLog.d/pk-norsa-warning.txt
new file mode 100644
index 0000000..d00aa8a
--- /dev/null
+++ b/ChangeLog.d/pk-norsa-warning.txt
@@ -0,0 +1,2 @@
+Bugfix
+   * Fix a compilation warning in pk.c when PSA is enabled and RSA is disabled.
diff --git a/docs/driver-only-builds.md b/docs/driver-only-builds.md
index 4095d8e..5d950b0 100644
--- a/docs/driver-only-builds.md
+++ b/docs/driver-only-builds.md
@@ -277,6 +277,11 @@
 `[PSA_WANT|MBEDTLS_PSA_ACCEL]_ALG_FFDH` allow builds accelerating FFDH and
 removing builtin support (i.e. `MBEDTLS_DHM_C`).
 
+Note that the PSA API only supports FFDH with RFC 7919 groups, whereas the
+Mbed TLS legacy API supports custom groups. As a consequence, the TLS layer
+of Mbed TLS only supports DHE cipher suites if built-in FFDH
+(`MBEDTLS_DHM_C`) is present, even when `MBEDTLS_USE_PSA_CRYPTO` is enabled.
+
 RSA
 ---
 
diff --git a/library/pk.c b/library/pk.c
index e33a243..3fe51ea 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -868,7 +868,6 @@
     psa_status_t status;
     psa_key_attributes_t key_attr = PSA_KEY_ATTRIBUTES_INIT;
     psa_key_type_t key_type;
-    psa_algorithm_t alg_type;
     size_t key_bits;
     /* Use a buffer size large enough to contain either a key pair or public key. */
     unsigned char exp_key[PSA_EXPORT_KEY_PAIR_OR_PUBLIC_MAX_SIZE];
@@ -899,7 +898,6 @@
         key_type = PSA_KEY_TYPE_PUBLIC_KEY_OF_KEY_PAIR(key_type);
     }
     key_bits = psa_get_key_bits(&key_attr);
-    alg_type = psa_get_key_algorithm(&key_attr);
 
 #if defined(MBEDTLS_RSA_C)
     if ((key_type == PSA_KEY_TYPE_RSA_KEY_PAIR) ||
@@ -919,6 +917,7 @@
             goto exit;
         }
 
+        psa_algorithm_t alg_type = psa_get_key_algorithm(&key_attr);
         mbedtls_md_type_t md_type = MBEDTLS_MD_NONE;
         if (PSA_ALG_GET_HASH(alg_type) != PSA_ALG_ANY_HASH) {
             md_type = mbedtls_md_type_from_psa_alg(alg_type);
diff --git a/tests/scripts/analyze_outcomes.py b/tests/scripts/analyze_outcomes.py
index 5b4deb6..5193a3b 100755
--- a/tests/scripts/analyze_outcomes.py
+++ b/tests/scripts/analyze_outcomes.py
@@ -468,6 +468,12 @@
                 'bignum.generated', 'bignum.misc',
             ],
             'ignored_tests': {
+                'ssl-opt': [
+                    # DHE support in TLS 1.2 requires built-in MBEDTLS_DHM_C
+                    # (because it needs custom groups, which PSA does not
+                    # provide), even with MBEDTLS_USE_PSA_CRYPTO.
+                    re.compile(r'PSK callback:.*\bdhe-psk\b.*'),
+                ],
                 'test_suite_platform': [
                     # Incompatible with sanitizers (e.g. ASan). If the driver
                     # component uses a sanitizer but the reference component
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 3549a7b..f4c7f6d 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -70,6 +70,32 @@
 
 # alternative versions of OpenSSL and GnuTLS (no default path)
 
+# If $OPENSSL is at least 1.1.1, use it as OPENSSL_NEXT as well.
+if [ -z "${OPENSSL_NEXT:-}" ]; then
+    case $($OPENSSL version) in
+        OpenSSL\ 1.1.[1-9]*) OPENSSL_NEXT=$OPENSSL;;
+        OpenSSL\ [3-9]*) OPENSSL_NEXT=$OPENSSL;;
+    esac
+fi
+
+# If $GNUTLS_CLI is at least 3.7, use it as GNUTLS_NEXT_CLI as well.
+if [ -z "${GNUTLS_NEXT_CLI:-}" ]; then
+    case $($GNUTLS_CLI --version) in
+        gnutls-cli\ 3.[1-9][0-9]*) GNUTLS_NEXT_CLI=$GNUTLS_CLI;;
+        gnutls-cli\ 3.[7-9].*) GNUTLS_NEXT_CLI=$GNUTLS_CLI;;
+        gnutls-cli\ [4-9]*) GNUTLS_NEXT_CLI=$GNUTLS_CLI;;
+    esac
+fi
+
+# If $GNUTLS_SERV is at least 3.7, use it as GNUTLS_NEXT_SERV as well.
+if [ -z "${GNUTLS_NEXT_SERV:-}" ]; then
+    case $($GNUTLS_SERV --version) in
+        gnutls-cli\ 3.[1-9][0-9]*) GNUTLS_NEXT_SERV=$GNUTLS_SERV;;
+        gnutls-cli\ 3.[7-9].*) GNUTLS_NEXT_SERV=$GNUTLS_SERV;;
+        gnutls-cli\ [4-9]*) GNUTLS_NEXT_SERV=$GNUTLS_SERV;;
+    esac
+fi
+
 if [ -n "${OPENSSL_NEXT:-}" ]; then
     O_NEXT_SRV="$OPENSSL_NEXT s_server -www -cert data_files/server5.crt -key data_files/server5.key"
     O_NEXT_SRV_EARLY_DATA="$OPENSSL_NEXT s_server -early_data -cert data_files/server5.crt -key data_files/server5.key"
@@ -443,9 +469,9 @@
     esac
 
     case "$CMD_LINE" in
-        *server5*|\
-        *server7*|\
-        *dir-maxpath*)
+        */server5*|\
+        */server7*|\
+        */dir-maxpath*)
             if [ "$TLS_VERSION" = "TLS13" ]; then
                 # In case of TLS13 the support for ECDSA is enough
                 requires_pk_alg "ECDSA"
@@ -477,9 +503,15 @@
     esac
 
     case "$CMD_LINE" in
-        *server2*|\
-        *server7*)
-            # server2 and server7 certificates use RSA encryption
+        */server1*|\
+        */server2*|\
+        */server7*)
+            # Certificates with an RSA key. The algorithm requirement is
+            # some subset of {PKCS#1v1.5 encryption, PKCS#1v1.5 signature,
+            # PSS signature}. We can't easily tell which subset works, and
+            # we aren't currently running ssl-opt.sh in configurations
+            # where partial RSA support is a problem, so generically, we
+            # just require RSA and it works out for our tests so far.
             requires_config_enabled "MBEDTLS_RSA_C"
     esac
 
@@ -494,9 +526,10 @@
 
 adapt_cmd_for_psk () {
     case "$2" in
-        *openssl*) s='-psk abc123 -nocert';;
-        *gnutls-*) s='--pskkey=abc123';;
-        *) s='psk=abc123';;
+        *openssl*s_server*) s='-psk 73776f726466697368 -nocert';;
+        *openssl*) s='-psk 73776f726466697368';;
+        *gnutls-*) s='--pskusername=Client_identity --pskkey=73776f726466697368';;
+        *) s='psk=73776f726466697368';;
     esac
     eval $1='"$2 $s"'
     unset s
@@ -2449,9 +2482,9 @@
 requires_hash_alg SHA_256
 run_test    "Opaque key for server authentication: RSA-PSK" \
             "$P_SRV debug_level=1 key_opaque=1 key_opaque_algs=rsa-decrypt,none \
-             psk=abc123 psk_identity=foo" \
+             psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI force_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA256 \
-             psk=abc123 psk_identity=foo" \
+             psk=73776f726466697368 psk_identity=foo" \
             0 \
             -c "Verifying peer X.509 certificate... ok" \
             -c "Ciphersuite is TLS-RSA-PSK-" \
@@ -2698,12 +2731,14 @@
             -C "error"
 
 # Tests for SHA-1 support
+requires_hash_alg SHA_1
 run_test    "SHA-1 forbidden by default in server certificate" \
             "$P_SRV key_file=data_files/server2.key crt_file=data_files/server2.crt" \
             "$P_CLI debug_level=2 force_version=tls12 allow_sha1=0" \
             1 \
             -c "The certificate is signed with an unacceptable hash"
 
+requires_hash_alg SHA_1
 run_test    "SHA-1 explicitly allowed in server certificate" \
             "$P_SRV key_file=data_files/server2.key crt_file=data_files/server2.crt" \
             "$P_CLI force_version=tls12 allow_sha1=1" \
@@ -2714,17 +2749,23 @@
             "$P_CLI force_version=tls12 allow_sha1=0" \
             0
 
+requires_hash_alg SHA_1
+requires_config_enabled MBEDTLS_RSA_C
 run_test    "SHA-1 forbidden by default in client certificate" \
             "$P_SRV force_version=tls12 auth_mode=required allow_sha1=0" \
             "$P_CLI key_file=data_files/cli-rsa.key crt_file=data_files/cli-rsa-sha1.crt" \
             1 \
             -s "The certificate is signed with an unacceptable hash"
 
+requires_hash_alg SHA_1
+requires_config_enabled MBEDTLS_RSA_C
 run_test    "SHA-1 explicitly allowed in client certificate" \
             "$P_SRV force_version=tls12 auth_mode=required allow_sha1=1" \
             "$P_CLI key_file=data_files/cli-rsa.key crt_file=data_files/cli-rsa-sha1.crt" \
             0
 
+requires_config_enabled MBEDTLS_RSA_C
+requires_hash_alg SHA_256
 run_test    "SHA-256 allowed by default in client certificate" \
             "$P_SRV force_version=tls12 auth_mode=required allow_sha1=0" \
             "$P_CLI key_file=data_files/cli-rsa.key crt_file=data_files/cli-rsa-sha256.crt" \
@@ -3820,7 +3861,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 requires_config_enabled MBEDTLS_SSL_SESSION_TICKETS
 run_test    "Session resume using tickets: openssl client" \
-            "$P_SRV debug_level=3 tickets=1" \
+            "$P_SRV force_version=tls12 debug_level=3 tickets=1" \
             "( $O_CLI -sess_out $SESSION; \
                $O_CLI -sess_in $SESSION; \
                rm -f $SESSION )" \
@@ -5626,6 +5667,7 @@
 # Test for the "secure renegotiation" extension only (no actual renegotiation)
 
 requires_gnutls
+requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "Renego ext: gnutls server strict, client default" \
             "$G_NEXT_SRV --priority=NORMAL:-VERS-ALL:+VERS-TLS1.2:%SAFE_RENEGOTIATION" \
@@ -5636,6 +5678,7 @@
             -c "HTTP/1.0 200 [Oo][Kk]"
 
 requires_gnutls
+requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "Renego ext: gnutls server unsafe, client default" \
             "$G_NEXT_SRV --priority=NORMAL:-VERS-ALL:+VERS-TLS1.2:%DISABLE_SAFE_RENEGOTIATION" \
@@ -5646,6 +5689,7 @@
             -c "HTTP/1.0 200 [Oo][Kk]"
 
 requires_gnutls
+requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "Renego ext: gnutls server unsafe, client break legacy" \
             "$G_NEXT_SRV --priority=NORMAL:-VERS-ALL:+VERS-TLS1.2:%DISABLE_SAFE_RENEGOTIATION" \
@@ -5656,28 +5700,31 @@
             -C "HTTP/1.0 200 [Oo][Kk]"
 
 requires_gnutls
+requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "Renego ext: gnutls client strict, server default" \
             "$P_SRV debug_level=3" \
-            "$G_CLI --priority=NORMAL:%SAFE_RENEGOTIATION localhost" \
+            "$G_CLI --priority=NORMAL:-VERS-ALL:+VERS-TLS1.2:%SAFE_RENEGOTIATION localhost" \
             0 \
             -s "received TLS_EMPTY_RENEGOTIATION_INFO\|found renegotiation extension" \
             -s "server hello, secure renegotiation extension"
 
 requires_gnutls
+requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "Renego ext: gnutls client unsafe, server default" \
             "$P_SRV debug_level=3" \
-            "$G_CLI --priority=NORMAL:%DISABLE_SAFE_RENEGOTIATION localhost" \
+            "$G_CLI --priority=NORMAL:-VERS-ALL:+VERS-TLS1.2:%DISABLE_SAFE_RENEGOTIATION localhost" \
             0 \
             -S "received TLS_EMPTY_RENEGOTIATION_INFO\|found renegotiation extension" \
             -S "server hello, secure renegotiation extension"
 
 requires_gnutls
+requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "Renego ext: gnutls client unsafe, server break legacy" \
             "$P_SRV debug_level=3 allow_legacy=-1" \
-            "$G_CLI --priority=NORMAL:%DISABLE_SAFE_RENEGOTIATION localhost" \
+            "$G_CLI --priority=NORMAL:-VERS-ALL:+VERS-TLS1.2:%DISABLE_SAFE_RENEGOTIATION localhost" \
             1 \
             -S "received TLS_EMPTY_RENEGOTIATION_INFO\|found renegotiation extension" \
             -S "server hello, secure renegotiation extension"
@@ -7789,7 +7836,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "keyUsage cli-auth: RSA, DigitalSignature: OK" \
             "$P_SRV debug_level=1 auth_mode=optional" \
-            "$O_CLI -key data_files/server2.key \
+            "$O_CLI -tls1_2 -key data_files/server2.key \
              -cert data_files/server2.ku-ds.crt" \
             0 \
             -s "Verifying peer X.509 certificate... ok" \
@@ -7799,7 +7846,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "keyUsage cli-auth: RSA, KeyEncipherment: fail (soft)" \
             "$P_SRV debug_level=1 auth_mode=optional" \
-            "$O_CLI -key data_files/server2.key \
+            "$O_CLI -tls1_2 -key data_files/server2.key \
              -cert data_files/server2.ku-ke.crt" \
             0 \
             -s "bad certificate (usage extensions)" \
@@ -7807,8 +7854,8 @@
 
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "keyUsage cli-auth: RSA, KeyEncipherment: fail (hard)" \
-            "$P_SRV debug_level=1 auth_mode=required" \
-            "$O_CLI -key data_files/server2.key \
+            "$P_SRV debug_level=1 force_version=tls12 auth_mode=required" \
+            "$O_CLI -tls1_2 -key data_files/server2.key \
              -cert data_files/server2.ku-ke.crt" \
             1 \
             -s "bad certificate (usage extensions)" \
@@ -7817,7 +7864,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "keyUsage cli-auth: ECDSA, DigitalSignature: OK" \
             "$P_SRV debug_level=1 auth_mode=optional" \
-            "$O_CLI -key data_files/server5.key \
+            "$O_CLI -tls1_2 -key data_files/server5.key \
              -cert data_files/server5.ku-ds.crt" \
             0 \
             -s "Verifying peer X.509 certificate... ok" \
@@ -7827,7 +7874,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "keyUsage cli-auth: ECDSA, KeyAgreement: fail (soft)" \
             "$P_SRV debug_level=1 auth_mode=optional" \
-            "$O_CLI -key data_files/server5.key \
+            "$O_CLI -tls1_2 -key data_files/server5.key \
              -cert data_files/server5.ku-ka.crt" \
             0 \
             -s "bad certificate (usage extensions)" \
@@ -8004,7 +8051,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "extKeyUsage cli-auth: clientAuth -> OK" \
             "$P_SRV debug_level=1 auth_mode=optional" \
-            "$O_CLI -key data_files/server5.key \
+            "$O_CLI -tls1_2 -key data_files/server5.key \
              -cert data_files/server5.eku-cli.crt" \
             0 \
             -S "bad certificate (usage extensions)" \
@@ -8013,7 +8060,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "extKeyUsage cli-auth: serverAuth,clientAuth -> OK" \
             "$P_SRV debug_level=1 auth_mode=optional" \
-            "$O_CLI -key data_files/server5.key \
+            "$O_CLI -tls1_2 -key data_files/server5.key \
              -cert data_files/server5.eku-srv_cli.crt" \
             0 \
             -S "bad certificate (usage extensions)" \
@@ -8022,7 +8069,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "extKeyUsage cli-auth: codeSign,anyEKU -> OK" \
             "$P_SRV debug_level=1 auth_mode=optional" \
-            "$O_CLI -key data_files/server5.key \
+            "$O_CLI -tls1_2 -key data_files/server5.key \
              -cert data_files/server5.eku-cs_any.crt" \
             0 \
             -S "bad certificate (usage extensions)" \
@@ -8031,7 +8078,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "extKeyUsage cli-auth: codeSign -> fail (soft)" \
             "$P_SRV debug_level=1 auth_mode=optional" \
-            "$O_CLI -key data_files/server5.key \
+            "$O_CLI -tls1_2 -key data_files/server5.key \
              -cert data_files/server5.eku-cs.crt" \
             0 \
             -s "bad certificate (usage extensions)" \
@@ -8040,7 +8087,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 run_test    "extKeyUsage cli-auth: codeSign -> fail (hard)" \
             "$P_SRV debug_level=1 auth_mode=required" \
-            "$O_CLI -key data_files/server5.key \
+            "$O_CLI -tls1_2 -key data_files/server5.key \
              -cert data_files/server5.eku-cs.crt" \
             1 \
             -s "bad certificate (usage extensions)" \
@@ -8183,9 +8230,9 @@
 # Tests for PSK callback
 
 run_test    "PSK callback: psk, no callback" \
-            "$P_SRV psk=abc123 psk_identity=foo" \
+            "$P_SRV psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             0 \
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
@@ -8193,9 +8240,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque psk on client, no callback" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8205,9 +8252,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque psk on client, no callback, SHA-384" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8217,9 +8264,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque psk on client, no callback, EMS" \
-            "$P_SRV extended_ms=1 debug_level=3 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=1 debug_level=3 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8229,9 +8276,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque psk on client, no callback, SHA-384, EMS" \
-            "$P_SRV extended_ms=1 debug_level=3 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=1 debug_level=3 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8241,9 +8288,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque rsa-psk on client, no callback" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA256 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8253,9 +8300,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque rsa-psk on client, no callback, SHA-384" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8265,9 +8312,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque rsa-psk on client, no callback, EMS" \
-            "$P_SRV extended_ms=1 debug_level=3 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=1 debug_level=3 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8277,9 +8324,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque rsa-psk on client, no callback, SHA-384, EMS" \
-            "$P_SRV extended_ms=1 debug_level=3 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=1 debug_level=3 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8289,9 +8336,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque ecdhe-psk on client, no callback" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA256 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8301,9 +8348,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque ecdhe-psk on client, no callback, SHA-384" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8313,9 +8360,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque ecdhe-psk on client, no callback, EMS" \
-            "$P_SRV extended_ms=1 debug_level=3 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=1 debug_level=3 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8325,9 +8372,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque ecdhe-psk on client, no callback, SHA-384, EMS" \
-            "$P_SRV extended_ms=1 debug_level=3 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=1 debug_level=3 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8337,9 +8384,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque dhe-psk on client, no callback" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA256 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8349,9 +8396,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque dhe-psk on client, no callback, SHA-384" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8361,9 +8408,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque dhe-psk on client, no callback, EMS" \
-            "$P_SRV extended_ms=1 debug_level=3 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=1 debug_level=3 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8373,9 +8420,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque dhe-psk on client, no callback, SHA-384, EMS" \
-            "$P_SRV extended_ms=1 debug_level=3 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=1 debug_level=3 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8385,9 +8432,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, static opaque on server, no callback" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8397,9 +8444,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, static opaque on server, no callback, SHA-384" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8409,10 +8456,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, static opaque on server, no callback, EMS" \
-            "$P_SRV debug_level=3 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 \
+            "$P_SRV debug_level=3 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 \
             force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA extended_ms=1" \
             "$P_CLI debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123 extended_ms=1" \
+            psk_identity=foo psk=73776f726466697368 extended_ms=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8422,10 +8469,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, static opaque on server, no callback, EMS, SHA384" \
-            "$P_SRV debug_level=3 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 \
+            "$P_SRV debug_level=3 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 \
             force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 extended_ms=1" \
             "$P_CLI debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 extended_ms=1" \
+            psk_identity=foo psk=73776f726466697368 extended_ms=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8435,9 +8482,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw rsa-psk on client, static opaque on server, no callback" \
-            "$P_SRV extended_ms=0 debug_level=5 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 debug_level=5 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=5 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8447,9 +8494,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw rsa-psk on client, static opaque on server, no callback, SHA-384" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-256-CBC-SHA384" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-256-CBC-SHA384" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8459,10 +8506,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw rsa-psk on client, static opaque on server, no callback, EMS" \
-            "$P_SRV debug_level=3 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 \
+            "$P_SRV debug_level=3 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 \
             force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA extended_ms=1" \
             "$P_CLI debug_level=3 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123 extended_ms=1" \
+            psk_identity=foo psk=73776f726466697368 extended_ms=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8472,10 +8519,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw rsa-psk on client, static opaque on server, no callback, EMS, SHA384" \
-            "$P_SRV debug_level=3 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 \
+            "$P_SRV debug_level=3 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 \
             force_ciphersuite=TLS-RSA-PSK-WITH-AES-256-CBC-SHA384 extended_ms=1" \
             "$P_CLI debug_level=3 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 extended_ms=1" \
+            psk_identity=foo psk=73776f726466697368 extended_ms=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8485,9 +8532,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw ecdhe-psk on client, static opaque on server, no callback" \
-            "$P_SRV extended_ms=0 debug_level=5 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 debug_level=5 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=5 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8497,9 +8544,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw ecdhe-psk on client, static opaque on server, no callback, SHA-384" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA384" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA384" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8509,10 +8556,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw ecdhe-psk on client, static opaque on server, no callback, EMS" \
-            "$P_SRV debug_level=3 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 \
+            "$P_SRV debug_level=3 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 \
             force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA extended_ms=1" \
             "$P_CLI debug_level=3 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123 extended_ms=1" \
+            psk_identity=foo psk=73776f726466697368 extended_ms=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8522,10 +8569,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw ecdhe-psk on client, static opaque on server, no callback, EMS, SHA384" \
-            "$P_SRV debug_level=3 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 \
+            "$P_SRV debug_level=3 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 \
             force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA384 extended_ms=1" \
             "$P_CLI debug_level=3 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 extended_ms=1" \
+            psk_identity=foo psk=73776f726466697368 extended_ms=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8535,9 +8582,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw dhe-psk on client, static opaque on server, no callback" \
-            "$P_SRV extended_ms=0 debug_level=5 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 debug_level=5 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=5 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8547,9 +8594,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw dhe-psk on client, static opaque on server, no callback, SHA-384" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-256-CBC-SHA384" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-256-CBC-SHA384" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             0 \
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
@@ -8559,10 +8606,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw dhe-psk on client, static opaque on server, no callback, EMS" \
-            "$P_SRV debug_level=3 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 \
+            "$P_SRV debug_level=3 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 \
             force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA extended_ms=1" \
             "$P_CLI debug_level=3 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123 extended_ms=1" \
+            psk_identity=foo psk=73776f726466697368 extended_ms=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8572,10 +8619,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw dhe-psk on client, static opaque on server, no callback, EMS, SHA384" \
-            "$P_SRV debug_level=3 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 \
+            "$P_SRV debug_level=3 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 \
             force_ciphersuite=TLS-DHE-PSK-WITH-AES-256-CBC-SHA384 extended_ms=1" \
             "$P_CLI debug_level=3 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 extended_ms=1" \
+            psk_identity=foo psk=73776f726466697368 extended_ms=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -8785,7 +8832,7 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, mismatching static raw PSK on server, opaque PSK from callback" \
-            "$P_SRV extended_ms=0 psk_identity=foo psk=abc123 debug_level=3 psk_list=abc,dead,def,beef psk_list_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 psk_identity=foo psk=73776f726466697368 debug_level=3 psk_list=abc,dead,def,beef psk_list_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
@@ -8797,7 +8844,7 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, mismatching static opaque PSK on server, opaque PSK from callback" \
-            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=foo psk=abc123 debug_level=3 psk_list=abc,dead,def,beef psk_list_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=foo psk=73776f726466697368 debug_level=3 psk_list=abc,dead,def,beef psk_list_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
@@ -8809,7 +8856,7 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, mismatching static opaque PSK on server, raw PSK from callback" \
-            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=foo psk=abc123 debug_level=3 psk_list=abc,dead,def,beef min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=foo psk=73776f726466697368 debug_level=3 psk_list=abc,dead,def,beef min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
@@ -8821,7 +8868,7 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, id-matching but wrong raw PSK on server, opaque PSK from callback" \
-            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=def psk=abc123 debug_level=3 psk_list=abc,dead,def,beef min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=def psk=73776f726466697368 debug_level=3 psk_list=abc,dead,def,beef min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
@@ -8833,7 +8880,7 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, matching opaque PSK on server, wrong opaque PSK from callback" \
-            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=def psk=beef debug_level=3 psk_list=abc,dead,def,abc123 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=def psk=beef debug_level=3 psk_list=abc,dead,def,73776f726466697368 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             1 \
@@ -8842,16 +8889,16 @@
 run_test    "PSK callback: no psk, no callback" \
             "$P_SRV" \
             "$P_CLI force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             1 \
             -s "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
 
 run_test    "PSK callback: callback overrides other settings" \
-            "$P_SRV psk=abc123 psk_identity=foo psk_list=abc,dead,def,beef" \
+            "$P_SRV psk=73776f726466697368 psk_identity=foo psk_list=abc,dead,def,beef" \
             "$P_CLI force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             1 \
             -S "SSL - The handshake negotiation failed" \
             -s "SSL - Unknown identity received" \
@@ -9069,11 +9116,25 @@
 
 # Test for ClientHello without extensions
 
+# Without extensions, ECC is impossible (no curve negotiation).
+requires_config_enabled MBEDTLS_RSA_C
 requires_gnutls
-run_test    "ClientHello without extensions" \
+run_test    "ClientHello without extensions: RSA" \
             "$P_SRV force_version=tls12 debug_level=3" \
             "$G_CLI --priority=NORMAL:%NO_EXTENSIONS:%DISABLE_SAFE_RENEGOTIATION localhost" \
             0 \
+            -s "Ciphersuite is .*-RSA-WITH-.*" \
+            -S "Ciphersuite is .*-EC.*" \
+            -s "dumping 'client hello extensions' (0 bytes)"
+
+requires_config_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
+requires_gnutls
+run_test    "ClientHello without extensions: PSK" \
+            "$P_SRV force_version=tls12 debug_level=3 psk=73776f726466697368" \
+            "$G_CLI --priority=NORMAL:+PSK:-RSA:-DHE-RSA:%NO_EXTENSIONS:%DISABLE_SAFE_RENEGOTIATION --pskusername=Client_identity --pskkey=73776f726466697368 localhost" \
+            0 \
+            -s "Ciphersuite is .*-PSK-.*" \
+            -S "Ciphersuite is .*-EC.*" \
             -s "dumping 'client hello extensions' (0 bytes)"
 
 # Tests for mbedtls_ssl_get_bytes_avail()
@@ -9683,9 +9744,9 @@
 
 requires_config_enabled MBEDTLS_SSL_ASYNC_PRIVATE
 run_test    "SSL async private: decrypt RSA-PSK, delay=0" \
-            "$P_SRV psk=abc123 \
+            "$P_SRV psk=73776f726466697368 \
              async_operations=d async_private_delay1=0 async_private_delay2=0" \
-            "$P_CLI psk=abc123 \
+            "$P_CLI psk=73776f726466697368 \
              force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA256" \
             0 \
             -s "Async decrypt callback: using key slot " \
@@ -9693,9 +9754,9 @@
 
 requires_config_enabled MBEDTLS_SSL_ASYNC_PRIVATE
 run_test    "SSL async private: decrypt RSA-PSK, delay=1" \
-            "$P_SRV psk=abc123 \
+            "$P_SRV psk=73776f726466697368 \
              async_operations=d async_private_delay1=1 async_private_delay2=1" \
-            "$P_CLI psk=abc123 \
+            "$P_CLI psk=73776f726466697368 \
              force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA256" \
             0 \
             -s "Async decrypt callback: using key slot " \
@@ -10145,8 +10206,8 @@
             -s "! Certificate verification was skipped"
 
 run_test    "DTLS wrong PSK: badmac alert" \
-            "$P_SRV dtls=1 psk=abc123 force_ciphersuite=TLS-PSK-WITH-AES-128-GCM-SHA256" \
-            "$P_CLI dtls=1 psk=abc124" \
+            "$P_SRV dtls=1 psk=73776f726466697368 force_ciphersuite=TLS-PSK-WITH-AES-128-GCM-SHA256" \
+            "$P_CLI dtls=1 psk=73776f726466697374" \
             1 \
             -s "SSL - Verification of the message MAC failed" \
             -c "SSL - A fatal alert message was received from our peer"
@@ -11914,8 +11975,8 @@
 requires_config_value_at_most "MBEDTLS_SSL_DTLS_MAX_BUFFERING" 230
 run_test    "DTLS reordering: Buffer encrypted Finished message, drop for fragmented NewSessionTicket" \
             -p "$P_PXY delay_srv=NewSessionTicket delay_srv=NewSessionTicket delay_ccs=1" \
-            "$P_SRV mtu=140 response_size=90 dgram_packing=0 psk=abc123 psk_identity=foo cookies=0 dtls=1 debug_level=2" \
-            "$P_CLI dgram_packing=0 dtls=1 debug_level=2 force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8 psk=abc123 psk_identity=foo" \
+            "$P_SRV mtu=140 response_size=90 dgram_packing=0 psk=73776f726466697368 psk_identity=foo cookies=0 dtls=1 debug_level=2" \
+            "$P_CLI dgram_packing=0 dtls=1 debug_level=2 force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8 psk=73776f726466697368 psk_identity=foo" \
             0 \
             -s "Buffer record from epoch 1" \
             -s "Found buffered record from current epoch - load" \
@@ -11929,8 +11990,8 @@
 run_test    "DTLS proxy: 3d (drop, delay, duplicate), \"short\" PSK handshake" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+             psk=73776f726466697368" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
             -s "Extra-header:" \
@@ -12005,8 +12066,8 @@
 run_test    "DTLS proxy: 3d, min handshake, resumption" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123 debug_level=3" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+             psk=73776f726466697368 debug_level=3" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              debug_level=3 reconnect=1 skip_close_notify=1 read_timeout=1000 max_resend=10 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -12020,8 +12081,8 @@
 run_test    "DTLS proxy: 3d, min handshake, resumption, nbio" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123 debug_level=3 nbio=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+             psk=73776f726466697368 debug_level=3 nbio=2" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              debug_level=3 reconnect=1 skip_close_notify=1 read_timeout=1000 max_resend=10 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8 nbio=2" \
             0 \
@@ -12035,8 +12096,8 @@
 run_test    "DTLS proxy: 3d, min handshake, client-initiated renego" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123 renegotiation=1 debug_level=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+             psk=73776f726466697368 renegotiation=1 debug_level=2" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              renegotiate=1 debug_level=2 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -12050,8 +12111,8 @@
 run_test    "DTLS proxy: 3d, min handshake, client-initiated renego, nbio" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123 renegotiation=1 debug_level=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+             psk=73776f726466697368 renegotiation=1 debug_level=2" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              renegotiate=1 debug_level=2 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -12065,9 +12126,9 @@
 run_test    "DTLS proxy: 3d, min handshake, server-initiated renego" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123 renegotiate=1 renegotiation=1 exchanges=4 \
+             psk=73776f726466697368 renegotiate=1 renegotiation=1 exchanges=4 \
              debug_level=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              renegotiation=1 exchanges=4 debug_level=2 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -12081,9 +12142,9 @@
 run_test    "DTLS proxy: 3d, min handshake, server-initiated renego, nbio" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123 renegotiate=1 renegotiation=1 exchanges=4 \
+             psk=73776f726466697368 renegotiate=1 renegotiation=1 exchanges=4 \
              debug_level=2 nbio=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              renegotiation=1 exchanges=4 debug_level=2 nbio=2 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -14062,8 +14123,8 @@
 requires_config_enabled MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ENABLED
 requires_config_enabled MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED
 run_test    "TLS 1.3: no HRR in case of PSK key exchange mode" \
-            "$P_SRV nbio=2 psk=010203 psk_identity=0a0b0c tls13_kex_modes=psk groups=none" \
-            "$P_CLI nbio=2 debug_level=3 psk=010203 psk_identity=0a0b0c tls13_kex_modes=all" \
+            "$P_SRV nbio=2 psk=73776f726466697368 psk_identity=0a0b0c tls13_kex_modes=psk groups=none" \
+            "$P_CLI nbio=2 debug_level=3 psk=73776f726466697368 psk_identity=0a0b0c tls13_kex_modes=all" \
             0 \
             -C "received HelloRetryRequest message" \
             -c "Selected key exchange mode: psk$" \