diff --git a/tests/opt-testcases/tls13-kex-modes.sh b/tests/opt-testcases/tls13-kex-modes.sh
new file mode 100755
index 0000000..bbd6544
--- /dev/null
+++ b/tests/opt-testcases/tls13-kex-modes.sh
@@ -0,0 +1,322 @@
+#!/bin/sh
+
+# tls13-kex-modes.sh
+#
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: with matched key and identity, with psk_ke and psk_dhe_ke. G->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$G_NEXT_CLI -d 10 --priority NORMAL:-VERS-ALL:-KX-ALL:+ECDHE-PSK:+DHE-PSK:+PSK:+VERS-TLS1.3 \
+                         --pskusername Client_identity --pskkey=6162636465666768696a6b6c6d6e6f70 \
+                         localhost" \
+            0 \
+            -s "found psk key exchange modes extension" \
+            -s "found pre_shared_key extension" \
+            -s "Found PSK_EPHEMERAL KEX MODE" \
+            -s "Found PSK KEX MODE" \
+            -s "Pre shared key found" \
+            -S "No matched PSK or ticket" \
+            -s "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: with matched key and identity, with psk_ke and psk_dhe_ke. O->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$O_NEXT_CLI -tls1_3 -msg -allow_no_dhe_kex \
+                         -psk_identity Client_identity -psk 6162636465666768696a6b6c6d6e6f70" \
+            0 \
+            -s "found psk key exchange modes extension" \
+            -s "found pre_shared_key extension" \
+            -s "Found PSK_EPHEMERAL KEX MODE" \
+            -s "Found PSK KEX MODE" \
+            -s "Pre shared key found" \
+            -S "No matched PSK or ticket" \
+            -s "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: with matched key and identity, with psk_ke. G->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$G_NEXT_CLI -d 10 --priority NORMAL:-VERS-ALL:-KX-ALL:-ECDHE-PSK:-DHE-PSK:+PSK:+VERS-TLS1.3 \
+                         --pskusername Client_identity --pskkey=6162636465666768696a6b6c6d6e6f70 \
+                         localhost" \
+            0 \
+            -s "found psk key exchange modes extension" \
+            -s "found pre_shared_key extension" \
+            -S "Found PSK_EPHEMERAL KEX MODE" \
+            -s "Found PSK KEX MODE" \
+            -s "Pre shared key found" \
+            -S "No matched PSK or ticket" \
+            -s "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: with matched key and identity, with psk_dhe_ke. G->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$G_NEXT_CLI -d 10 --priority NORMAL:-VERS-ALL:-KX-ALL:+ECDHE-PSK:+DHE-PSK:-PSK:+VERS-TLS1.3 \
+                         --pskusername Client_identity --pskkey=6162636465666768696a6b6c6d6e6f70 \
+                         localhost" \
+            1 \
+            -s "found psk key exchange modes extension" \
+            -s "found pre_shared_key extension" \
+            -s "Found PSK_EPHEMERAL KEX MODE" \
+            -S "Found PSK KEX MODE" \
+            -s "Pre shared key found" \
+            -S "No matched PSK or ticket" \
+            -S "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: with matched key and identity, with psk_dhe_ke. O->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$O_NEXT_CLI -tls1_3 -msg \
+                         -psk_identity Client_identity -psk 6162636465666768696a6b6c6d6e6f70" \
+            1 \
+            -s "found psk key exchange modes extension" \
+            -s "found pre_shared_key extension" \
+            -s "Found PSK_EPHEMERAL KEX MODE" \
+            -S "Found PSK KEX MODE" \
+            -s "Pre shared key found" \
+            -S "No matched PSK or ticket" \
+            -S "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: with mismatched identity, with psk_ke and psk_dhe_ke. G->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$G_NEXT_CLI -d 10 --priority NORMAL:-VERS-ALL:-KX-ALL:+ECDHE-PSK:+DHE-PSK:+PSK:+VERS-TLS1.3 \
+                         --pskusername wrong_identity --pskkey=6162636465666768696a6b6c6d6e6f70 \
+                         localhost" \
+            1 \
+            -s "found psk key exchange modes extension" \
+            -s "found pre_shared_key extension" \
+            -s "Found PSK_EPHEMERAL KEX MODE" \
+            -s "Found PSK KEX MODE" \
+            -S "Pre shared key found" \
+            -s "No matched PSK or ticket" \
+            -S "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: with mismatched identity, with psk_ke and psk_dhe_ke. O->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$O_NEXT_CLI -tls1_3 -msg -allow_no_dhe_kex \
+                         -psk_identity wrong_identity -psk 6162636465666768696a6b6c6d6e6f70" \
+            1 \
+            -s "found psk key exchange modes extension" \
+            -s "found pre_shared_key extension" \
+            -s "Found PSK_EPHEMERAL KEX MODE" \
+            -s "Found PSK KEX MODE" \
+            -S "Pre shared key found" \
+            -s "No matched PSK or ticket" \
+            -S "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: with mismatched identity, with psk_ke. G->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$G_NEXT_CLI -d 10 --priority NORMAL:-VERS-ALL:-KX-ALL:-ECDHE-PSK:-DHE-PSK:+PSK:+VERS-TLS1.3 \
+                         --pskusername wrong_identity --pskkey=6162636465666768696a6b6c6d6e6f70 \
+                         localhost" \
+            1 \
+            -s "found psk key exchange modes extension" \
+            -s "found pre_shared_key extension" \
+            -S "Found PSK_EPHEMERAL KEX MODE" \
+            -s "Found PSK KEX MODE" \
+            -S "Pre shared key found" \
+            -s "No matched PSK or ticket" \
+            -S "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: with mismatched identity, with psk_dhe_ke. G->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$G_NEXT_CLI -d 10 --priority NORMAL:-VERS-ALL:-KX-ALL:+ECDHE-PSK:+DHE-PSK:-PSK:+VERS-TLS1.3 \
+                         --pskusername wrong_identity --pskkey=6162636465666768696a6b6c6d6e6f70 \
+                         localhost" \
+            1 \
+            -s "found psk key exchange modes extension" \
+            -s "found pre_shared_key extension" \
+            -s "Found PSK_EPHEMERAL KEX MODE" \
+            -S "Found PSK KEX MODE" \
+            -S "Pre shared key found" \
+            -s "No matched PSK or ticket" \
+            -S "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: with mismatched identity, with psk_dhe_ke. O->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$O_NEXT_CLI -tls1_3 -msg \
+                         -psk_identity wrong_identity -psk 6162636465666768696a6b6c6d6e6f70" \
+            1 \
+            -s "found psk key exchange modes extension" \
+            -s "found pre_shared_key extension" \
+            -s "Found PSK_EPHEMERAL KEX MODE" \
+            -S "Found PSK KEX MODE" \
+            -S "Pre shared key found" \
+            -s "No matched PSK or ticket" \
+            -S "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: without pre_shared_key,with psk_ke and psk_dhe_ke. G->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$G_NEXT_CLI -d 10 --priority NORMAL:-VERS-ALL:-KX-ALL:+VERS-TLS1.3 \
+                         localhost" \
+            1 \
+            -s "found psk key exchange modes extension" \
+            -S "found pre_shared_key extension" \
+            -s "Found PSK_EPHEMERAL KEX MODE" \
+            -s "Found PSK KEX MODE" \
+            -S "Pre shared key found" \
+            -S "No matched PSK or ticket" \
+            -S "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: without pre_shared_key,with psk_ke and psk_dhe_ke. O->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$O_NEXT_CLI -tls1_3 -msg -allow_no_dhe_kex " \
+            1 \
+            -s "found psk key exchange modes extension" \
+            -S "found pre_shared_key extension" \
+            -s "Found PSK_EPHEMERAL KEX MODE" \
+            -s "Found PSK KEX MODE" \
+            -S "Pre shared key found" \
+            -S "No matched PSK or ticket" \
+            -S "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+# SOME_PSK_ENABLED
+requires_any_configs_enabled MBEDTLS_KEY_EXCHANGE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED \
+                             MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
+run_test    "TLS 1.3: PSK: psk: without pre_shared_key,with psk_dhe_ke. O->m" \
+            "$P_SRV force_version=tls13 tls13_kex_modes=psk debug_level=5 psk_identity=Client_identity psk=6162636465666768696a6b6c6d6e6f70" \
+            "$O_NEXT_CLI -tls1_3 -msg " \
+            1 \
+            -s "found psk key exchange modes extension" \
+            -S "found pre_shared_key extension" \
+            -s "Found PSK_EPHEMERAL KEX MODE" \
+            -S "Found PSK KEX MODE" \
+            -S "Pre shared key found" \
+            -S "No matched PSK or ticket" \
+            -S "key exchange mode: psk$" \
+            -S "key exchange mode: psk_ephemeral" \
+            -S "key exchange mode: ephemeral"