1=pod 2 3=head1 NAME 4 5EVP_PKEY_asn1_find, 6EVP_PKEY_asn1_find_str, 7EVP_PKEY_asn1_get_count, 8EVP_PKEY_asn1_get0, 9EVP_PKEY_asn1_get0_info 10- enumerate public key ASN.1 methods 11 12=head1 SYNOPSIS 13 14 #include <openssl/evp.h> 15 16 int EVP_PKEY_asn1_get_count(void); 17 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx); 18 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type); 19 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe, 20 const char *str, int len); 21 int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *pkey_base_id, 22 int *ppkey_flags, const char **pinfo, 23 const char **ppem_str, 24 const EVP_PKEY_ASN1_METHOD *ameth); 25 26=head1 DESCRIPTION 27 28EVP_PKEY_asn1_count() returns a count of the number of public key 29ASN.1 methods available: it includes standard methods and any methods 30added by the application. 31 32EVP_PKEY_asn1_get0() returns the public key ASN.1 method B<idx>. 33The value of B<idx> must be between zero and EVP_PKEY_asn1_get_count() 34- 1. 35 36EVP_PKEY_asn1_find() looks up the B<EVP_PKEY_ASN1_METHOD> with NID 37B<type>. 38If B<pe> isn't B<NULL>, then it will look up an engine implementing a 39B<EVP_PKEY_ASN1_METHOD> for the NID B<type> and return that instead, 40and also set B<*pe> to point at the engine that implements it. 41 42EVP_PKEY_asn1_find_str() looks up the B<EVP_PKEY_ASN1_METHOD> with PEM 43type string B<str>. 44Just like EVP_PKEY_asn1_find(), if B<pe> isn't B<NULL>, then it will 45look up an engine implementing a B<EVP_PKEY_ASN1_METHOD> for the NID 46B<type> and return that instead, and also set B<*pe> to point at the 47engine that implements it. 48 49EVP_PKEY_asn1_get0_info() returns the public key ID, base public key 50ID (both NIDs), any flags, the method description and PEM type string 51associated with the public key ASN.1 method B<*ameth>. 52 53EVP_PKEY_asn1_count(), EVP_PKEY_asn1_get0(), EVP_PKEY_asn1_find() and 54EVP_PKEY_asn1_find_str() are not thread safe, but as long as all 55B<EVP_PKEY_ASN1_METHOD> objects are added before the application gets 56threaded, using them is safe. See L<EVP_PKEY_asn1_add0(3)>. 57 58=head1 RETURN VALUES 59 60EVP_PKEY_asn1_count() returns the number of available public key methods. 61 62EVP_PKEY_asn1_get0() return a public key method or B<NULL> if B<idx> is 63out of range. 64 65EVP_PKEY_asn1_get0_info() returns 0 on failure, 1 on success. 66 67=head1 SEE ALSO 68 69L<EVP_PKEY_asn1_new(3)>, L<EVP_PKEY_asn1_add0(3)> 70 71=head1 COPYRIGHT 72 73Copyright 2017 The OpenSSL Project Authors. All Rights Reserved. 74 75Licensed under the Apache License 2.0 (the "License"). You may not use 76this file except in compliance with the License. You can obtain a copy 77in the file LICENSE in the source distribution or at 78L<https://www.openssl.org/source/license.html>. 79 80=cut 81