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 2017-2020 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>.

3.0.2                                              2025-02-05                         EVP_RC5_32_12_16_CBC(3SSL)