diff --git a/library/ssl_ciphersuites_internal.h b/library/ssl_ciphersuites_internal.h
new file mode 100644
index 0000000..27ff721
--- /dev/null
+++ b/library/ssl_ciphersuites_internal.h
@@ -0,0 +1,154 @@
+/**
+ * \file ssl_ciphersuites_internal.h
+ *
+ * \brief Internal part of the public "ssl_ciphersuites.h".
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+#ifndef MBEDTLS_SSL_CIPHERSUITES_INTERNAL_H
+#define MBEDTLS_SSL_CIPHERSUITES_INTERNAL_H
+
+#include "mbedtls/pk.h"
+
+#if defined(MBEDTLS_PK_C)
+mbedtls_pk_type_t mbedtls_ssl_get_ciphersuite_sig_pk_alg(const mbedtls_ssl_ciphersuite_t *info);
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+psa_algorithm_t mbedtls_ssl_get_ciphersuite_sig_pk_psa_alg(const mbedtls_ssl_ciphersuite_t *info);
+psa_key_usage_t mbedtls_ssl_get_ciphersuite_sig_pk_psa_usage(const mbedtls_ssl_ciphersuite_t *info);
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
+mbedtls_pk_type_t mbedtls_ssl_get_ciphersuite_sig_alg(const mbedtls_ssl_ciphersuite_t *info);
+#endif /* MBEDTLS_PK_C */
+
+int mbedtls_ssl_ciphersuite_uses_ec(const mbedtls_ssl_ciphersuite_t *info);
+int mbedtls_ssl_ciphersuite_uses_psk(const mbedtls_ssl_ciphersuite_t *info);
+
+#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PFS_ENABLED)
+static inline int mbedtls_ssl_ciphersuite_has_pfs(const mbedtls_ssl_ciphersuite_t *info)
+{
+    switch (info->MBEDTLS_PRIVATE(key_exchange)) {
+        case MBEDTLS_KEY_EXCHANGE_DHE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_DHE_PSK:
+        case MBEDTLS_KEY_EXCHANGE_ECDHE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDHE_PSK:
+        case MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA:
+        case MBEDTLS_KEY_EXCHANGE_ECJPAKE:
+            return 1;
+
+        default:
+            return 0;
+    }
+}
+#endif /* MBEDTLS_KEY_EXCHANGE_SOME_PFS_ENABLED */
+
+#if defined(MBEDTLS_KEY_EXCHANGE_SOME_NON_PFS_ENABLED)
+static inline int mbedtls_ssl_ciphersuite_no_pfs(const mbedtls_ssl_ciphersuite_t *info)
+{
+    switch (info->MBEDTLS_PRIVATE(key_exchange)) {
+        case MBEDTLS_KEY_EXCHANGE_ECDH_RSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA:
+        case MBEDTLS_KEY_EXCHANGE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_PSK:
+        case MBEDTLS_KEY_EXCHANGE_RSA_PSK:
+            return 1;
+
+        default:
+            return 0;
+    }
+}
+#endif /* MBEDTLS_KEY_EXCHANGE_SOME_NON_PFS_ENABLED */
+
+#if defined(MBEDTLS_KEY_EXCHANGE_SOME_ECDH_ENABLED)
+static inline int mbedtls_ssl_ciphersuite_uses_ecdh(const mbedtls_ssl_ciphersuite_t *info)
+{
+    switch (info->MBEDTLS_PRIVATE(key_exchange)) {
+        case MBEDTLS_KEY_EXCHANGE_ECDH_RSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA:
+            return 1;
+
+        default:
+            return 0;
+    }
+}
+#endif /* MBEDTLS_KEY_EXCHANGE_SOME_ECDH_ENABLED */
+
+static inline int mbedtls_ssl_ciphersuite_cert_req_allowed(const mbedtls_ssl_ciphersuite_t *info)
+{
+    switch (info->MBEDTLS_PRIVATE(key_exchange)) {
+        case MBEDTLS_KEY_EXCHANGE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_DHE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDH_RSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDHE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA:
+            return 1;
+
+        default:
+            return 0;
+    }
+}
+
+static inline int mbedtls_ssl_ciphersuite_uses_srv_cert(const mbedtls_ssl_ciphersuite_t *info)
+{
+    switch (info->MBEDTLS_PRIVATE(key_exchange)) {
+        case MBEDTLS_KEY_EXCHANGE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_RSA_PSK:
+        case MBEDTLS_KEY_EXCHANGE_DHE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDH_RSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDHE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA:
+            return 1;
+
+        default:
+            return 0;
+    }
+}
+
+#if defined(MBEDTLS_KEY_EXCHANGE_SOME_DHE_ENABLED)
+static inline int mbedtls_ssl_ciphersuite_uses_dhe(const mbedtls_ssl_ciphersuite_t *info)
+{
+    switch (info->MBEDTLS_PRIVATE(key_exchange)) {
+        case MBEDTLS_KEY_EXCHANGE_DHE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_DHE_PSK:
+            return 1;
+
+        default:
+            return 0;
+    }
+}
+#endif /* MBEDTLS_KEY_EXCHANGE_SOME_DHE_ENABLED) */
+
+#if defined(MBEDTLS_KEY_EXCHANGE_SOME_ECDHE_ENABLED)
+static inline int mbedtls_ssl_ciphersuite_uses_ecdhe(const mbedtls_ssl_ciphersuite_t *info)
+{
+    switch (info->MBEDTLS_PRIVATE(key_exchange)) {
+        case MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDHE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDHE_PSK:
+            return 1;
+
+        default:
+            return 0;
+    }
+}
+#endif /* MBEDTLS_KEY_EXCHANGE_SOME_ECDHE_ENABLED) */
+
+#if defined(MBEDTLS_KEY_EXCHANGE_WITH_SERVER_SIGNATURE_ENABLED)
+static inline int mbedtls_ssl_ciphersuite_uses_server_signature(
+    const mbedtls_ssl_ciphersuite_t *info)
+{
+    switch (info->MBEDTLS_PRIVATE(key_exchange)) {
+        case MBEDTLS_KEY_EXCHANGE_DHE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDHE_RSA:
+        case MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA:
+            return 1;
+
+        default:
+            return 0;
+    }
+}
+#endif /* MBEDTLS_KEY_EXCHANGE_WITH_SERVER_SIGNATURE_ENABLED */
+
+#endif /* MBEDTLS_SSL_CIPHERSUITES_INTERNAL_H */
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 96afe76..7cbc6af 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -44,6 +44,7 @@
 #endif
 
 #include "mbedtls/pk.h"
+#include "ssl_ciphersuites_internal.h"
 #include "pk_internal.h"
 #include "common.h"