5 X509_check_issued - checks if certificate is issued by another
10 #include <openssl/x509v3.h>
12 int X509_check_issued(X509 *issuer, X509 *subject);
17 This function checks if certificate I<subject> was issued using CA
18 certificate I<issuer>. This function takes into account not only
19 matching of issuer field of I<subject> with subject field of I<issuer>,
20 but also compares B<authorityKeyIdentifier> extension of I<subject> with
21 B<subjectKeyIdentifier> of I<issuer> if B<authorityKeyIdentifier>
22 present in the I<subject> certificate and checks B<keyUsage> field of
27 Function return B<X509_V_OK> if certificate I<subject> is issued by
28 I<issuer> or some B<X509_V_ERR*> constant to indicate an error.
32 L<X509_verify_cert(3)>,
38 Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
40 Licensed under the OpenSSL license (the "License"). You may not use
41 this file except in compliance with the License. You can obtain a copy
42 in the file LICENSE in the source distribution or at
43 L<https://www.openssl.org/source/license.html>.