openssl/doc/man3/EVP_PKEY_digestsign_supports_digest.pod
Tomas Mraz e9fe0f7e9d Replace EVP_PKEY_supports_digest_nid
The EVP_PKEY_supports_digest_nid() is renamed to
EVP_PKEY_digestsign_supports_digest() and implemented
via EVP_DigestSignInit_ex().

Fixes #14343

Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15198)
2021-05-13 13:19:39 +02:00

45 lines
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=pod
=head1 NAME
EVP_PKEY_digestsign_supports_digest - indicate support for signature digest
=head1 SYNOPSIS
#include <openssl/evp.h>
int EVP_PKEY_digestsign_supports_digest(EVP_PKEY *pkey, OSSL_LIB_CTX *libctx,
const char *name, const char *propq);
=head1 DESCRIPTION
The EVP_PKEY_digestsign_supports_digest() function queries whether the message
digest I<name> is supported for public key signature operations associated with
key I<pkey>. The query is done within an optional library context I<libctx> and
with an optional property query I<propq>.
=head1 RETURN VALUES
The EVP_PKEY_digestsign_supports_digest() function returns 1 if the message
digest algorithm identified by I<name> can be used for public key signature
operations associated with key I<pkey> and 0 if it cannot be used. It returns
a negative value for failure.
=head1 SEE ALSO
L<EVP_DigestSignInit_ex(3)>,
=head1 HISTORY
The EVP_PKEY_digestsign_supports_digest() function was added in OpenSSL 3.0.
=head1 COPYRIGHT
Copyright 2021 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (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