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8fa4d95e RT |
1 | =pod |
2 | ||
3 | =head1 NAME | |
4 | ||
5 | EVP_rc4, | |
6 | EVP_rc4_40, | |
7 | EVP_rc4_hmac_md5 | |
8 | - EVP RC4 stream cipher | |
9 | ||
10 | =head1 SYNOPSIS | |
11 | ||
12 | #include <openssl/evp.h> | |
13 | ||
14 | const EVP_CIPHER *EVP_rc4(void) | |
15 | const EVP_CIPHER *EVP_rc4_40(void) | |
16 | const EVP_CIPHER *EVP_rc4_hmac_md5(void) | |
17 | ||
18 | =head1 DESCRIPTION | |
19 | ||
20 | The RC4 stream cipher for EVP. | |
21 | ||
22 | =over 4 | |
23 | ||
24 | =item EVP_rc4() | |
25 | ||
26 | RC4 stream cipher. This is a variable key length cipher with a default key | |
27 | length of 128 bits. | |
28 | ||
29 | =item EVP_rc4_40() | |
30 | ||
31 | RC4 stream cipher with 40 bit key length. | |
32 | ||
33 | WARNING: this function is obsolete. Its usage should be replaced with the | |
34 | EVP_rc4() and the EVP_CIPHER_CTX_set_key_length() functions. | |
35 | ||
36 | =item EVP_rc4_hmac_md5() | |
37 | ||
38 | Authenticated encryption with the RC4 stream cipher with MD5 as HMAC. | |
39 | ||
40 | WARNING: this is not intended for usage outside of TLS and requires calling of | |
41 | some undocumented ctrl functions. These ciphers do not conform to the EVP AEAD | |
42 | interface. | |
43 | ||
44 | =back | |
45 | ||
46 | =head1 RETURN VALUES | |
47 | ||
48 | These functions return an B<EVP_CIPHER> structure that contains the | |
49 | implementation of the symmetric cipher. See L<EVP_CIPHER_meth_new(3)> for | |
50 | details of the B<EVP_CIPHER> structure. | |
51 | ||
52 | =head1 SEE ALSO | |
53 | ||
54 | L<evp(7)>, | |
55 | L<EVP_EncryptInit(3)>, | |
56 | L<EVP_CIPHER_meth_new(3)> | |
57 | ||
58 | =head1 COPYRIGHT | |
59 | ||
60 | Copyright 2017 The OpenSSL Project Authors. All Rights Reserved. | |
61 | ||
62 | Licensed under the OpenSSL license (the "License"). You may not use | |
63 | this file except in compliance with the License. You can obtain a copy | |
64 | in the file LICENSE in the source distribution or at | |
65 | L<https://www.openssl.org/source/license.html>. | |
66 | ||
67 | =cut | |
68 |