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
These functions provide the RC4 stream cipher in the evp(3) framework. It is a variable key length cipher.
EVP_rc4()
uses a default key length of 128 bits.
EVP_rc4_40()
uses a key length of 40 bits instead. This function is deprecated. Use
EVP_rc4() and
EVP_CIPHER_CTX_set_key_length(3) instead.
EVP_rc4_hmac_md5()
provides authenticated encryption with the RC4 stream cipher with MD5 as
HMAC. This function is not intended for usage outside of TLS and requires
calling of some undocumented control functions. It does not conform to the
EVP AEAD interface.
RETURN VALUES
These functions return an EVP_CIPHER structure that provides the implementation of the symmetric cipher.
SEE ALSO
HISTORY
EVP_rc4() first appeared in SSLeay 0.5.1
and EVP_rc4_40() in OpenSSL 0.9.1. These functions
have been available since OpenBSD 2.4.
EVP_rc4_hmac_md5() first appeared in
OpenSSL 1.0.1 and has been available since OpenBSD
5.3.