EVP_RC5_32_12_16_CBC(3ossl) OpenSSL EVP_RC5_32_12_16_CBC(3ossl)
NAME
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
SYNOPSIS
#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);
DESCRIPTION
The RC5 encryption algorithm for EVP.
EVP_rc5_32_12_16_cbc(3), 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.
NOTES
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.
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 2017-2023 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>.
3.1.4 2023-10-24 EVP_RC5_32_12_16_CBC(3ossl)
openssl 3.1.4 - Generated Mon Oct 30 16:02:26 CDT 2023