X509_CHECK_ISSUED
Section: OpenSSL (3)
Updated: 2021-03-26
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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() 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 check the certificate signature.
RETURN VALUES
Function return
X509_V_OK if certificate
subject is issued by
issuer or some
X509_V_ERR* constant to indicate an error.
SEE ALSO
X509_verify_cert(3),
X509_check_ca(3),
verify(1)
COPYRIGHT
Copyright 2015-2020 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
<https://www.openssl.org/source/license.html>.