:-'Generic Commit'

dropshell-tool/openssl-1.1.1w/doc/man3/X509_check_ca.pod

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+=pod
+
+=head1 NAME
+
+X509_check_ca - check if given certificate is CA certificate
+
+=head1 SYNOPSIS
+
+ #include <openssl/x509v3.h>
+
+ int X509_check_ca(X509 *cert);
+
+=head1 DESCRIPTION
+
+This function checks if given certificate is CA certificate (can be used
+to sign other certificates).
+
+=head1 RETURN VALUES
+
+Function return 0, if it is not CA certificate, 1 if it is proper X509v3
+CA certificate with B<basicConstraints> extension CA:TRUE,
+3, if it is self-signed X509 v1 certificate, 4, if it is certificate with
+B<keyUsage> extension with bit B<keyCertSign> set, but without
+B<basicConstraints>, and 5 if it has outdated Netscape Certificate Type
+extension telling that it is CA certificate.
+
+Actually, any nonzero value means that this certificate could have been
+used to sign other certificates.
+
+=head1 SEE ALSO
+
+L<X509_verify_cert(3)>,
+L<X509_check_issued(3)>,
+L<X509_check_purpose(3)>
+
+=head1 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
+L<https://www.openssl.org/source/license.html>.
+
+=cut