=pod
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=head1 NAME
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SSL_get_peer_tmp_key, SSL_get_server_tmp_key, SSL_get_tmp_key - get information
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about temporary keys used during a handshake
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=head1 SYNOPSIS
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#include <openssl/ssl.h>
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long SSL_get_peer_tmp_key(SSL *ssl, EVP_PKEY **key);
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long SSL_get_server_tmp_key(SSL *ssl, EVP_PKEY **key);
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long SSL_get_tmp_key(SSL *ssl, EVP_PKEY **key);
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=head1 DESCRIPTION
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SSL_get_peer_tmp_key() returns the temporary key provided by the peer and
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used during key exchange. For example, if ECDHE is in use, then this represents
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the peer's public ECDHE key. On success a pointer to the key is stored in
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B<*key>. It is the caller's responsibility to free this key after use using
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L<EVP_PKEY_free(3)>.
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SSL_get_server_tmp_key() is a backwards compatibility alias for
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SSL_get_peer_tmp_key().
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Under that name it worked just on the client side of the connection, its
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behaviour on the server end is release-dependent.
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SSL_get_tmp_key() returns the equivalent information for the local
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end of the connection.
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=head1 RETURN VALUES
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All these functions return 1 on success and 0 otherwise.
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=head1 NOTES
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This function is implemented as a macro.
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=head1 SEE ALSO
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L<ssl(7)>, L<EVP_PKEY_free(3)>
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=head1 COPYRIGHT
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Copyright 2017-2018 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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