=pod =head1 NAME SSL_SESSION_get0_cipher, SSL_SESSION_set_cipher - set and retrieve the SSL cipher associated with a session =head1 SYNOPSIS #include <openssl/ssl.h> const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *s); int SSL_SESSION_set_cipher(SSL_SESSION *s, const SSL_CIPHER *cipher); =head1 DESCRIPTION SSL_SESSION_get0_cipher() retrieves the cipher that was used by the connection when the session was created, or NULL if it cannot be determined. The value returned is a pointer to an object maintained within B<s> and should not be released. SSL_SESSION_set_cipher() can be used to set the ciphersuite associated with the SSL_SESSION B<s> to B<cipher>. For example, this could be used to set up a session based PSK (see L<SSL_CTX_set_psk_use_session_callback(3)>). =head1 RETURN VALUES SSL_SESSION_get0_cipher() returns the SSL_CIPHER associated with the SSL_SESSION or NULL if it cannot be determined. SSL_SESSION_set_cipher() returns 1 on success or 0 on failure. =head1 SEE ALSO L<ssl(7)>, L<d2i_SSL_SESSION(3)>, L<SSL_SESSION_get_time(3)>, L<SSL_SESSION_get0_hostname(3)>, L<SSL_SESSION_free(3)>, L<SSL_CTX_set_psk_use_session_callback(3)> =head1 HISTORY SSL_SESSION_get0_cipher() was first added to OpenSSL 1.1.0. SSL_SESSION_set_cipher() was first added to OpenSSL 1.1.1. =head1 COPYRIGHT Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (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 L<https://www.openssl.org/source/license.html>. =cut