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.\" ========================================================================
.\"
.IX Title "SSL_GET_PEER_TMP_KEY 3"
.TH SSL_GET_PEER_TMP_KEY 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.
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.nh
.SH "NAME"
SSL_get_peer_tmp_key, SSL_get_server_tmp_key, SSL_get_tmp_key \- get information about temporary keys used during a handshake
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& long SSL_get_peer_tmp_key(SSL *ssl, EVP_PKEY **key);
\& long SSL_get_server_tmp_key(SSL *ssl, EVP_PKEY **key);
\& long SSL_get_tmp_key(SSL *ssl, EVP_PKEY **key);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBSSL_get_peer_tmp_key()\fR returns the temporary key provided by the peer and
used during key exchange. For example, if \s-1ECDHE\s0 is in use, then this represents
the peer's public \s-1ECDHE\s0 key. On success a pointer to the key is stored in
\&\fB*key\fR. It is the caller's responsibility to free this key after use using
\&\fBEVP_PKEY_free\fR\|(3).
.PP
\&\fBSSL_get_server_tmp_key()\fR is a backwards compatibility alias for
\&\fBSSL_get_peer_tmp_key()\fR.
Under that name it worked just on the client side of the connection, its
behaviour on the server end is release-dependent.
.PP
\&\fBSSL_get_tmp_key()\fR returns the equivalent information for the local
end of the connection.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
All these functions return 1 on success and 0 otherwise.
.SH "NOTES"
.IX Header "NOTES"
This function is implemented as a macro.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBssl\fR\|(7), \fBEVP_PKEY_free\fR\|(3)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2017\-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>.