2
0
mirror of https://github.com/openssl/openssl.git synced 2024-12-21 06:09:35 +08:00
openssl/doc/man3/BN_mod_inverse.pod

42 lines
1.0 KiB
Plaintext
Raw Normal View History

2000-01-24 06:06:24 +08:00
=pod
=head1 NAME
2000-02-24 19:55:57 +08:00
BN_mod_inverse - compute inverse modulo n
2000-01-24 06:06:24 +08:00
=head1 SYNOPSIS
#include <openssl/bn.h>
2000-02-24 19:55:57 +08:00
BIGNUM *BN_mod_inverse(BIGNUM *r, BIGNUM *a, const BIGNUM *n,
BN_CTX *ctx);
2000-01-24 06:06:24 +08:00
=head1 DESCRIPTION
BN_mod_inverse() computes the inverse of B<a> modulo B<n>
places the result in B<r> (C<(a*r)%n==1>). If B<r> is NULL,
a new B<BIGNUM> is created.
B<ctx> is a previously allocated B<BN_CTX> used for temporary
variables. B<r> may be the same B<BIGNUM> as B<a> or B<n>.
=head1 RETURN VALUES
BN_mod_inverse() returns the B<BIGNUM> containing the inverse, and
NULL on error. The error codes can be obtained by L<ERR_get_error(3)>.
2000-01-24 06:06:24 +08:00
=head1 SEE ALSO
L<ERR_get_error(3)>, L<BN_add(3)>
2000-01-24 06:06:24 +08:00
=head1 COPYRIGHT
Copyright 2000-2017 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