X509_CHECK_ISSUED(3ossl) OpenSSL X509_CHECK_ISSUED(3ossl)
NAME
X509_check_issued - checks if certificate is apparently issued by
another certificate
SYNOPSIS
#include <openssl/x509v3.h>
int X509_check_issued(X509 *issuer, X509 *subject);
DESCRIPTION
X509_check_issued(3) checks if certificate subject was apparently issued
using (CA) certificate issuer. This function takes into account not
only matching of the issuer field of subject with the subject field of
issuer, but also compares all sub-fields of the authorityKeyIdentifier
extension of subject, as far as present, with the respective
subjectKeyIdentifier, serial number, and issuer fields of issuer, as
far as present. It also checks if the keyUsage field (if present) of
issuer allows certificate signing. It does not actually check the
certificate signature. An error is returned if the issuer or the
subject are incomplete certificates.
RETURN VALUES
X509_check_issued(3) returns X509_V_OK if all checks are successful or
some X509_V_ERR* constant to indicate an error.
SEE ALSO
X509_verify_cert(3), X509_verify(3), X509_check_ca(3),
openssl-verify(1), X509_self_signed(3)
COPYRIGHT
Copyright 2015-2021 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
<https://www.openssl.org/source/license.html>.
3.3.2 2024-09-04 X509_CHECK_ISSUED(3ossl)
openssl 3.3.2 - Generated Sun Sep 29 16:10:26 CDT 2024