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SSL_CTX_SET_KEYLOG_CALLBACK(3)	    OpenSSL	SSL_CTX_SET_KEYLOG_CALLBACK(3)

NAME
       SSL_CTX_set_keylog_callback, SSL_CTX_get_keylog_callback,
       SSL_CTX_keylog_cb_func -	logging	TLS key	material

SYNOPSIS
	#include <openssl/ssl.h>

	typedef	void (*SSL_CTX_keylog_cb_func)(const SSL *ssl, const char *line);

	void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb);
	SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx);

DESCRIPTION
       SSL_CTX_set_keylog_callback() sets the TLS key logging callback.	This
       callback	is called whenever TLS key material is generated or received,
       in order	to allow applications to store this keying material for
       debugging purposes.

       SSL_CTX_get_keylog_callback() retrieves the previously set TLS key
       logging callback. If no callback	has been set, this will	return NULL.
       When there is no	key logging callback, or if
       SSL_CTX_set_keylog_callback is called with NULL as the value of cb, no
       logging of key material will be done.

       The key logging callback	is called with two items: the ssl object
       associated with the connection, and line, a string containing the key
       material	in the format used by NSS for its SSLKEYLOGFILE	debugging
       output. To recreate that	file, the key logging callback should log
       line, followed by a newline.  line will always be a NULL-terminated
       string.

RETURN VALUES
       SSL_CTX_get_keylog_callback() returns a pointer to
       SSL_CTX_keylog_cb_func or NULL if the callback is not set.

SEE ALSO
       ssl(7)

COPYRIGHT
       Copyright 2016-2018 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
       <https://www.openssl.org/source/license.html>.

1.1.1a				  2018-11-20	SSL_CTX_SET_KEYLOG_CALLBACK(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | COPYRIGHT

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