$NetBSD: EVP_rc4.3,v 1.8 2024/09/08 13:08:25 christos Exp $
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Title "EVP_rc4 3"
way too many mistakes in technical documents.
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Title "EVP_rc4 3"
EVP_rc4 3 2024-09-03 3.0.15 OpenSSL
For nroff, turn off justification. Always turn off hyphenation; it makesway too many mistakes in technical documents.
NAME
EVP_rc4,
EVP_rc4_40,
EVP_rc4_hmac_md5
\- EVP RC4 stream cipher
SYNOPSIS
Header "SYNOPSIS" .Vb 1
#include <openssl/evp.h>
\&
const EVP_CIPHER *EVP_rc4(void);
const EVP_CIPHER *EVP_rc4_40(void);
const EVP_CIPHER *EVP_rc4_hmac_md5(void);
.Ve
DESCRIPTION
Header "DESCRIPTION" The RC4 stream cipher for EVP.
EVP_rc4() 4
Item "EVP_rc4()" RC4 stream cipher. This is a variable key length cipher with a default key
length of 128 bits.
EVP_rc4_40() 4
Item "EVP_rc4_40()" RC4 stream cipher with 40 bit key length.
.Sp
WARNING: this function is obsolete. Its usage should be replaced with the
\fBEVP_rc4() and the EVP_CIPHER_CTX_set_key_length() functions.
EVP_rc4_hmac_md5() 4
Item "EVP_rc4_hmac_md5()" Authenticated encryption with the RC4 stream cipher with MD5 as HMAC.
.Sp
WARNING: this is not intended for usage outside of TLS and requires calling of
some undocumented ctrl functions. These ciphers do not conform to the EVP AEAD
interface.
NOTES
Header "NOTES" Developers should be aware of the negative performance implications of
calling these functions multiple times and should consider using
\fBEVP_CIPHER_fetch\|(3) with EVP_CIPHER-RC4\|(7) instead.
See "Performance" in crypto\|(7) for further information.
"RETURN VALUES"
Header "RETURN VALUES" These functions return an EVP_CIPHER structure that contains the
implementation of the symmetric cipher. See EVP_CIPHER_meth_new\|(3) for
details of the EVP_CIPHER structure.
"SEE ALSO"
Header "SEE ALSO" \fBevp\|(7),
\fBEVP_EncryptInit\|(3),
\fBEVP_CIPHER_meth_new\|(3)
COPYRIGHT
Header "COPYRIGHT" Copyright 2017-2023 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 <https://www.openssl.org/source/license.html>.