1=pod 2 3=head1 NAME 4 5SSL_SESSION_get0_cipher, 6SSL_SESSION_set_cipher 7- set and retrieve the SSL cipher associated with a session 8 9=head1 SYNOPSIS 10 11 #include <openssl/ssl.h> 12 13 const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *s); 14 int SSL_SESSION_set_cipher(SSL_SESSION *s, const SSL_CIPHER *cipher); 15 16=head1 DESCRIPTION 17 18SSL_SESSION_get0_cipher() retrieves the cipher that was used by the 19connection when the session was created, or NULL if it cannot be determined. 20 21The value returned is a pointer to an object maintained within B<s> and 22should not be released. 23 24SSL_SESSION_set_cipher() can be used to set the ciphersuite associated with the 25SSL_SESSION B<s> to B<cipher>. For example, this could be used to set up a 26session based PSK (see L<SSL_CTX_set_psk_use_session_callback(3)>). 27 28=head1 RETURN VALUES 29 30SSL_SESSION_get0_cipher() returns the SSL_CIPHER associated with the SSL_SESSION 31or NULL if it cannot be determined. 32 33SSL_SESSION_set_cipher() returns 1 on success or 0 on failure. 34 35=head1 SEE ALSO 36 37L<ssl(7)>, 38L<d2i_SSL_SESSION(3)>, 39L<SSL_SESSION_get_time(3)>, 40L<SSL_SESSION_get0_hostname(3)>, 41L<SSL_SESSION_free(3)>, 42L<SSL_CTX_set_psk_use_session_callback(3)> 43 44=head1 HISTORY 45 46The SSL_SESSION_get0_cipher() function was added in OpenSSL 1.1.0. 47The SSL_SESSION_set_cipher() function was added in OpenSSL 1.1.1. 48 49=head1 COPYRIGHT 50 51Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved. 52 53Licensed under the Apache License 2.0 (the "License"). You may not use 54this file except in compliance with the License. You can obtain a copy 55in the file LICENSE in the source distribution or at 56L<https://www.openssl.org/source/license.html>. 57 58=cut 59