mirror of
https://github.com/openssl/openssl.git
synced 2024-12-15 06:01:37 +08:00
37 lines
899 B
Plaintext
37 lines
899 B
Plaintext
|
=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 VALUE
|
||
|
|
|
||
|
|
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 selfsigned 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, and 5 if it has outdated Netscape Certificate Type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 non-zero 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)>
|
||
|
|
|
||
|
|
=cut
|