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=pod
=head1 NAME
X509_cmp_time - X509 time functions
=head1 SYNOPSIS
X509_cmp_time(const ASN1_TIME *asn1_time, time_t *cmp_time);
=head1 DESCRIPTION
X509_cmp_time() compares the ASN1_TIME in B<asn1_time> with the time in
<cmp_time>.
B<asn1_time> must satisfy the ASN1_TIME format mandated by RFC 5280, i.e.,
its format must be either YYMMDDHHMMSSZ or YYYYMMDDHHMMSSZ.
If B<cmp_time> is NULL the current time is used.
=head1 BUGS
Unlike many standard comparison functions, X509_cmp_time returns 0 on error.
=head1 RETURN VALUES
X509_cmp_time() returns -1 if B<asn1_time> is earlier than, or equal to,
B<cmp_time>, and 1 otherwise. It returns 0 on error.
=head1 COPYRIGHT
Copyright 2017-2018 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
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