Updated: 2021/Apr/14


EVP_rc5_32_12_16_cbc(3)             OpenSSL            EVP_rc5_32_12_16_cbc(3)



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

LIBRARY
       libcrypto, -lcrypto

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>.



1.1.1i                            2020-01-23           EVP_rc5_32_12_16_cbc(3)