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source: vbox/trunk/src/libs/openssl-1.1.1l/doc/man3/EVP_rc4.pod@ 91772

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openssl-1.1.1l: Applied and adjusted our OpenSSL changes to 1.1.1l. bugref:10126

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33WARNING: this function is obsolete.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