SSL_get1_supported_ciphers, SSL_get_client_ciphers, SSL_get_ciphers, SSL_CTX_get_ciphers,

       Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (the "License").  You may not use this file except in compliance
       with the License.  You can obtain a copy in the file LICENSE in the source distribution or at
       <https://www.openssl.org/source/license.html>.

3.5.0                                              2025-06-04                              SSL_GET_CIPHERS(3SSL)

SSL_get_ciphers() returns the stack of available SSL_CIPHERs for ssl, sorted by preference. If ssl is
       NULL or no ciphers are available, NULL is returned.

       SSL_CTX_get_ciphers() returns the stack of available SSL_CIPHERs for ctx.

       SSL_get1_supported_ciphers() returns the stack of enabled SSL_CIPHERs for ssl as would be sent in a
       ClientHello (that is, sorted by preference).  The list depends on settings like the cipher list, the
       supported protocol versions, the security level, and the enabled signature algorithms.  SRP and PSK
       ciphers are only enabled if the appropriate callbacks or settings have been applied.  The list of ciphers
       that would be sent in a ClientHello can differ from the list of ciphers that would be acceptable when
       acting as a server.  For example, additional ciphers may be usable by a server if there is a gap in the
       list of supported protocols, and some ciphers may not be usable by a server if there is not a suitable
       certificate configured.  If ssl is NULL or no ciphers are available, NULL is returned.

       SSL_get_client_ciphers() returns the stack of available SSL_CIPHERs matching the list received from the
       client on ssl. If ssl is NULL, no ciphers are available, or ssl is not operating in server mode, NULL is
       returned.

       SSL_bytes_to_cipher_list() treats the supplied len octets in bytes as a wire-protocol cipher suite
       specification (in the three-octet-per-cipher SSLv2 wire format if isv2format is nonzero; otherwise the
       two-octet SSLv3/TLS wire format), and parses the cipher suites supported by the library into the returned
       stacks of SSL_CIPHER objects sk and Signalling Cipher-Suite Values scsvs.  Unsupported cipher suites are
       ignored.  Returns 1 on success and 0 on failure.

       SSL_get_cipher_list() returns a pointer to the name of the SSL_CIPHER listed for ssl with priority. If
       ssl is NULL, no ciphers are available, or there are less ciphers than priority available, NULL is
       returned.

       SSL_get_shared_ciphers() creates a colon separated and NUL terminated list of SSL_CIPHER names that are
       available in both the client and the server. buf is the buffer that should be populated with the list of
       names and size is the size of that buffer. A pointer to buf is returned on success or NULL on error. If
       the supplied buffer is not large enough to contain the complete list of names then a truncated list of
       names will be returned. Note that just because a ciphersuite is available (i.e. it is configured in the
       cipher list) and shared by both the client and the server it does not mean that it is enabled (see the
       description of SSL_get1_supported_ciphers() above). This function will return available shared
       ciphersuites whether or not they are enabled. This is a server side function only and must only be called
       after the completion of the initial handshake.

       SSL_get1_supported_ciphers, SSL_get_client_ciphers, SSL_get_ciphers, SSL_CTX_get_ciphers,
       SSL_bytes_to_cipher_list, SSL_get_cipher_list, SSL_get_shared_ciphers - get list of available SSL_CIPHERs

       The details of the ciphers obtained by SSL_get_ciphers(), SSL_CTX_get_ciphers()SSL_get1_supported_ciphers() and SSL_get_client_ciphers() can be obtained using the
       SSL_CIPHER_get_name(3) family of functions.

       Call SSL_get_cipher_list() with priority starting from 0 to obtain the sorted list of available ciphers,
       until NULL is returned.

       Note: SSL_get_ciphers(), SSL_CTX_get_ciphers() and SSL_get_client_ciphers() return a pointer to an
       internal cipher stack, which will be freed later on when the SSL or SSL_SESSION object is freed.
       Therefore, the calling code MUSTNOT free the return value itself.

       The stack returned by SSL_get1_supported_ciphers() should be freed using sk_SSL_CIPHER_free().

       The stacks returned by SSL_bytes_to_cipher_list() should be freed using sk_SSL_CIPHER_free().

       See DESCRIPTION

ssl(7), SSL_CTX_set_cipher_list(3), SSL_CIPHER_get_name(3)

        #include <openssl/ssl.h>

        STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *ssl);
        STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx);
        STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s);
        STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *ssl);
        int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
                                     int isv2format, STACK_OF(SSL_CIPHER) **sk,
                                     STACK_OF(SSL_CIPHER) **scsvs);
        const char *SSL_get_cipher_list(const SSL *ssl, int priority);
        char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size);