EVP_RC4
Section: OpenSSL (3)
Updated: 2021-03-26
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NAME
EVP_rc4, EVP_rc4_40, EVP_rc4_hmac_md5 - EVP RC4 stream cipher
SYNOPSIS
#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)
DESCRIPTION
The
RC4 stream cipher for
EVP.
- EVP_rc4()
-
RC4 stream cipher. This is a variable key length cipher with a default key
length of 128 bits.
- EVP_rc4_40()
-
RC4 stream cipher with 40 bit key length.
WARNING: this function is obsolete. Its usage should be replaced with the
EVP_rc4() and the EVP_CIPHER_CTX_set_key_length() functions.
- EVP_rc4_hmac_md5()
-
Authenticated encryption with the RC4 stream cipher with MD5 as HMAC.
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.
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
evp(7),
EVP_EncryptInit(3),
EVP_CIPHER_meth_new(3)
COPYRIGHT
Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (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>.