openssl/doc/man3/EVP_PKEY_meth_get_count.pod
Dr. Stephen Henson 48ed9c23b0 Add public key method enumeration function.
Add functions to enumerate public key methods. Add test to ensure table
is in the correct order.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4015)
2017-07-29 23:04:09 +01:00

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=pod
=head1 NAME
EVP_PKEY_meth_get_count, EVP_PKEY_meth_get0, EVP_PKEY_meth_get0_info - enumeratepublic key methods
=head1 SYNOPSIS
#include <openssl/evp.h>
size_t EVP_PKEY_meth_get_count(void);
const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx);
void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
const EVP_PKEY_METHOD *meth);
=head1 DESCRIPTION
EVP_PKEY_meth_count() returns a count of the number of public key methods
available: it includes standard methods and any methods added by the
application.
EVP_PKEY_meth_get0() returns the public key method B<idx>. The value of B<idx>
must be between zero and EVP_PKEY_meth_get_count() - 1.
EVP_PKEY_meth_get0_info() returns the public key ID (a NID) and any flags
associated with the public key method B<*meth>.
=head1 RETURN VALUES
EVP_PKEY_meth_count() returns the number of available public key methods.
EVP_PKEY_meth_get0() return a public key method or B<NULL> if B<idx> is
out of range.
EVP_PKEY_meth_get0_info() does not return a value.
=head1 SEE ALSO
L<EVP_PKEY_new(3)>
=head1 COPYRIGHT
Copyright 2002-2016 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