EVP_rc5_32_12_16_cbc, EVP_rc5_32_12_16_cfb, EVP_rc5_32_12_16_cfb64, EVP_rc5_32_12_16_ecb,

       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>.

3.5.0                                              2025-06-04                         EVP_RC5_32_12_16_CBC(3SSL)

       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.

       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

       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)

        #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);