X509_CHECK_CA
Section: OpenSSL (3SSL)
Updated: 2024-03-03
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NAME
X509_check_ca - check if given certificate is CA certificate
SYNOPSIS
#include <openssl/x509v3.h>
int X509_check_ca(X509 *cert);
DESCRIPTION
This function checks if given certificate is CA certificate (can be used
to sign other certificates). The certificate must be a complete certificate
otherwise an error is returned.
RETURN VALUES
Function return 0, if it is not CA certificate, 1 if it is proper X509v3
CA certificate with basicConstraints extension CA:TRUE,
3, if it is self-signed X509 v1 certificate, 4, if it is certificate with
keyUsage extension with bit keyCertSign set, but without
basicConstraints, and 5 if it has outdated Netscape Certificate Type
extension telling that it is CA certificate.
This function will also return 0 on error.
Actually, any nonzero value means that this certificate could have been
used to sign other certificates.
SEE ALSO
X509_verify_cert(3),
X509_check_issued(3),
X509_check_purpose(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>.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUES
-
- SEE ALSO
-
- COPYRIGHT
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Time: 11:43:19 GMT, April 27, 2024