| =pod |
| |
| =head1 NAME |
| |
| X509_check_issued - checks if certificate is issued by another |
| certificate |
| |
| =head1 SYNOPSIS |
| |
| #include <openssl/x509v3.h> |
| |
| int X509_check_issued(X509 *issuer, X509 *subject); |
| |
| |
| =head1 DESCRIPTION |
| |
| This function checks if certificate I<subject> was issued using CA |
| certificate I<issuer>. This function takes into account not only |
| matching of issuer field of I<subject> with subject field of I<issuer>, |
| but also compares B<authorityKeyIdentifier> extension of I<subject> with |
| B<subjectKeyIdentifier> of I<issuer> if B<authorityKeyIdentifier> |
| present in the I<subject> certificate and checks B<keyUsage> field of |
| I<issuer>. |
| |
| =head1 RETURN VALUE |
| |
| Function return B<X509_V_OK> if certificate I<subject> is issued by |
| I<issuer> or some B<X509_V_ERR*> constant to indicate an error. |
| |
| =head1 SEE ALSO |
| |
| L<X509_verify_cert(3)>, |
| L<X509_check_ca(3)>, |
| L<verify(1)> |
| |
| =head1 COPYRIGHT |
| |
| Copyright 2015-2016 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 |
