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