EVP_RC5_32_12_16_CBC

Section: OpenSSL (3)
Updated: 2020-04-23
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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(), 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.
 

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 2017-2019 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>.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
SEE ALSO
COPYRIGHT
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