EVP_rc5_32_12_16_cbc, EVP_rc5_32_12_16_cfb, EVP_rc5_32_12_16_cfb64,
EVP_rc5_32_12_16_ecb, EVP_rc5_32_12_16_ofb - EVP RC5 cipher
#include <openssl/evp.h>
const EVP_CIPHER *EVP_rc5_32_12_16_cbc(void);
const EVP_CIPHER *EVP_rc5_32_12_16_cfb(void);
const EVP_CIPHER *EVP_rc5_32_12_16_cfb64(void);
const EVP_CIPHER *EVP_rc5_32_12_16_ecb(void);
const EVP_CIPHER *EVP_rc5_32_12_16_ofb(void);
The RC5 encryption algorithm for EVP.
-
EVP_rc5_32_12_16_cbc(),
EVP_rc5_32_12_16_cfb(), EVP_rc5_32_12_16_cfb64(),
EVP_rc5_32_12_16_ecb(), EVP_rc5_32_12_16_ofb()
- RC5 encryption algorithm in CBC, CFB, ECB and OFB modes
respectively. This is a variable key length cipher with an additional
"number of rounds" parameter. By default the key length is set
to 128 bits and 12 rounds. Alternative key lengths can be set using
EVP_CIPHER_CTX_set_key_length(3). The maximum key length is 2040
bits.
The following rc5 specific ctrls are supported (see
EVP_CIPHER_CTX_ctrl(3)).
- EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_RC5_ROUNDS, rounds,
NULL)
- Sets the number of rounds to rounds. This must be
one of RC5_8_ROUNDS, RC5_12_ROUNDS or RC5_16_ROUNDS.
- EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GET_RC5_ROUNDS, 0,
&rounds)
- Stores the number of rounds currently configured in
*rounds where *rounds is an int.
Developers should be aware of the negative performance implications of calling
these functions multiple times and should consider using
EVP_CIPHER_fetch(3) with
EVP_CIPHER-RC5(7) instead. See
"Performance" in
crypto(7) for further information.
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.
evp(7),
EVP_EncryptInit(3),
EVP_CIPHER_meth_new(3)
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>.