xref: /openssl/doc/man3/EVP_desx_cbc.pod (revision b6eb95fa)
1=pod
2
3=head1 NAME
4
5EVP_desx_cbc
6- EVP DES-X cipher
7
8=head1 SYNOPSIS
9
10 #include <openssl/evp.h>
11
12 const EVP_CIPHER *EVP_desx_cbc(void);
13
14=head1 DESCRIPTION
15
16The DES-X encryption algorithm for EVP.
17
18All modes below use a key length of 128 bits and acts on blocks of 128-bits.
19
20=over 4
21
22=item EVP_desx_cbc()
23
24The DES-X algorithm in CBC mode.
25
26This algorithm is not provided by the OpenSSL default provider.
27To use it is necessary to load either the OpenSSL legacy provider or another
28implementation.
29
30=back
31
32Developers should be aware of the negative performance implications of
33calling this function multiple times and should consider using
34L<EVP_CIPHER_fetch(3)> with L<EVP_CIPHER-DES(7)> instead.
35See L<crypto(7)/Performance> for further information.
36
37=head1 RETURN VALUES
38
39These functions return an B<EVP_CIPHER> structure that contains the
40implementation of the symmetric cipher. See L<EVP_CIPHER_meth_new(3)> for
41details of the B<EVP_CIPHER> structure.
42
43=head1 SEE ALSO
44
45L<evp(7)>,
46L<EVP_EncryptInit(3)>,
47L<EVP_CIPHER_meth_new(3)>
48
49=head1 COPYRIGHT
50
51Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
52
53Licensed under the Apache License 2.0 (the "License").  You may not use
54this file except in compliance with the License.  You can obtain a copy
55in the file LICENSE in the source distribution or at
56L<https://www.openssl.org/source/license.html>.
57
58=cut
59
60