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openssl/doc/man3/SSL_get_peer_signature_nid.pod
Pauli c4de074e63 Documentation updates
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Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3082)
2017-03-30 14:16:41 +02:00

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=pod
=head1 NAME
SSL_get_peer_signature_nid, SSL_get_peer_signature_type_nid - get TLS
message signing types
=head1 SYNOPSIS
#include <openssl/ssl.h>
int SSL_get_peer_signature_nid(SSL *ssl, int *psig_nid);
int SSL_get_peer_signature_type_nid(const SSL *ssl, int *psigtype_nid);
=head1 DESCRIPTION
SSL_get_peer_signature_nid() sets B<*psig_nid> to the NID of the digest used
by the peer to sign TLS messages. It is implemented as a macro.
SSL_get_peer_signature_type_nid() sets B<*psigtype_nid> to the signature
type used by the peer to sign TLS messages. Currently the signature type
is the NID of the public key type used for signing except for PSS signing
where it is B<EVP_PKEY_RSA_PSS>.
=head1 RETURN VALUES
These functions return 1 for success and 0 for failure. There are several
possible reasons for failure: the cipher suite has no signature (e.g. it
uses RSA key exchange or is anonymous), the TLS version is below 1.2 or
the functions were called before the peer signed a message.
=head1 SEE ALSO
L<ssl(7)>, L<SSL_get_peer_certificate(3)>,
=head1 COPYRIGHT
Copyright 2017 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
L<https://www.openssl.org/source/license.html>.
=cut