mirror of
https://github.com/openssl/openssl.git
synced 2024-12-15 06:01:37 +08:00
4bfe304ea8
Fixes: #9088 Functions documented in this commit: X509_cmp, X509_NAME_cmp, X509_issuer_and_serial_cmp, X509_issuer_name_cmp, X509_subject_name_cmp, X509_CRL_cmp, X509_CRL_match Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/9091)
81 lines
3.1 KiB
Plaintext
81 lines
3.1 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
X509_cmp, X509_NAME_cmp,
|
|
X509_issuer_and_serial_cmp, X509_issuer_name_cmp, X509_subject_name_cmp,
|
|
X509_CRL_cmp, X509_CRL_match
|
|
- compare X509 certificates and related values
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/x509.h>
|
|
|
|
int X509_cmp(const X509 *a, const X509 *b);
|
|
int X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b);
|
|
int X509_issuer_and_serial_cmp(const X509 *a, const X509 *b);
|
|
int X509_issuer_name_cmp(const X509 *a, const X509 *b);
|
|
int X509_subject_name_cmp(const X509 *a, const X509 *b);
|
|
int X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b);
|
|
int X509_CRL_match(const X509_CRL *a, const X509_CRL *b);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
This set of functions are used to compare X509 objects, including X509
|
|
certificates, X509 CRL objects and various values in an X509 certificate.
|
|
|
|
The X509_cmp() function compares two B<X509> objects indicated by parameters
|
|
B<a> and B<b>. The comparison is based on the B<memcmp> result of the hash
|
|
values of two B<X509> objects and the canonical (DER) encoding values.
|
|
|
|
The X509_NAME_cmp() function compares two B<X509_NAME> objects indicated by
|
|
parameters B<a> and B<b>. The comparison is based on the B<memcmp> result of
|
|
the canonical (DER) encoding values of the two objects. L<i2d_X509_NAME(3)>
|
|
has a more detailed description of the DER encoding of the B<X509_NAME> structure.
|
|
|
|
The X509_issuer_and_serial_cmp() function compares the serial number and issuer
|
|
values in the given B<X509> objects B<a> and B<b>.
|
|
|
|
The X509_issuer_name_cmp(), X509_subject_name_cmp() and X509_CRL_cmp() functions
|
|
are effectively wrappers of the X509_NAME_cmp() function. These functions compare
|
|
issuer names and subject names of the X<509> objects, or issuers of B<X509_CRL>
|
|
objects, respectively.
|
|
|
|
The X509_CRL_match() function compares two B<X509_CRL> objects. Unlike the
|
|
X509_CRL_cmp() function, this function compares the whole CRL content instead
|
|
of just the issuer name.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
Like common memory comparison functions, the B<X509> comparison functions return
|
|
an integer less than, equal to, or greater than zero if object B<a> is found to
|
|
be less than, to match, or be greater than object B<b>, respectively.
|
|
|
|
X509_NAME_cmp(), X509_issuer_and_serial_cmp(), X509_issuer_name_cmp(),
|
|
X509_subject_name_cmp() and X509_CRL_cmp() may return B<-2> to indicate an error.
|
|
|
|
=head1 NOTES
|
|
|
|
These functions in fact utilize the underlying B<memcmp> of the C library to do
|
|
the comparison job. Data to be compared varies from DER encoding data, hash
|
|
value or B<ASN1_STRING>. The sign of the comparison can be used to order the
|
|
objects but it does not have a special meaning in some cases.
|
|
|
|
X509_NAME_cmp() and wrappers utilize the value B<-2> to indicate errors in some
|
|
circumstances, which could cause confusion for the applications.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<i2d_X509_NAME(3)>, L<i2d_X509(3)>
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2019 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
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|