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Edit File : SSL_CTX_get_keylog_callback.3 \| Size : 5.91 KB
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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" SSL_CTX_set_keylog_callback, SSL_CTX_get_keylog_callback, SSL_CTX_keylog_cb_func \- logging TLS key material .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #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); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBSSL_CTX_set_keylog_callback()\fR sets the \s-1TLS\s0 key logging callback. This callback is called whenever \s-1TLS\s0 key material is generated or received, in order to allow applications to store this keying material for debugging purposes. .PP \&\fBSSL_CTX_get_keylog_callback()\fR retrieves the previously set \s-1TLS\s0 key logging callback. If no callback has been set, this will return \s-1NULL.\s0 When there is no key logging callback, or if SSL_CTX_set_keylog_callback is called with \s-1NULL\s0 as the value of cb, no logging of key material will be done. .PP The key logging callback is called with two items: the \fBssl\fR object associated with the connection, and \fBline\fR, a string containing the key material in the format used by \s-1NSS\s0 for its \fB\s-1SSLKEYLOGFILE\s0\fR debugging output. To recreate that file, the key logging callback should log \fBline\fR, followed by a newline. \&\fBline\fR will always be a NULL-terminated string. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBSSL_CTX_get_keylog_callback()\fR returns a pointer to \fBSSL_CTX_keylog_cb_func\fR or \&\s-1NULL\s0 if the callback is not set. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBssl\fR\\|(7) .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2016\-2018 The OpenSSL Project Authors. All Rights Reserved. .PP Licensed under the OpenSSL license (the \(L"License\(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>. Back

Edit File : SSL_CTX_get_keylog_callback.3 | Size : 5.91 KB

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.\" ========================================================================
.\"
.IX Title "SSL_CTX_SET_KEYLOG_CALLBACK 3"
.TH SSL_CTX_SET_KEYLOG_CALLBACK 3 "2023-09-11" "1.1.1w" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
SSL_CTX_set_keylog_callback, SSL_CTX_get_keylog_callback, SSL_CTX_keylog_cb_func \- logging TLS key material
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #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);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBSSL_CTX_set_keylog_callback()\fR sets the \s-1TLS\s0 key logging callback. This callback
is called whenever \s-1TLS\s0 key material is generated or received, in order to allow
applications to store this keying material for debugging purposes.
.PP
\&\fBSSL_CTX_get_keylog_callback()\fR retrieves the previously set \s-1TLS\s0 key logging
callback. If no callback has been set, this will return \s-1NULL.\s0 When there is no
key logging callback, or if SSL_CTX_set_keylog_callback is called with \s-1NULL\s0 as
the value of cb, no logging of key material will be done.
.PP
The key logging callback is called with two items: the \fBssl\fR object associated
with the connection, and \fBline\fR, a string containing the key material in the
format used by \s-1NSS\s0 for its \fB\s-1SSLKEYLOGFILE\s0\fR debugging output. To recreate that
file, the key logging callback should log \fBline\fR, followed by a newline.
\&\fBline\fR will always be a NULL-terminated string.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBSSL_CTX_get_keylog_callback()\fR returns a pointer to \fBSSL_CTX_keylog_cb_func\fR or
\&\s-1NULL\s0 if the callback is not set.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBssl\fR\|(7)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2016\-2018 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L"License\*(R").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.

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