1EVP_RC5_32_12_16_CBC(3ossl)         OpenSSL        EVP_RC5_32_12_16_CBC(3ossl)
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NAME

6       EVP_rc5_32_12_16_cbc, EVP_rc5_32_12_16_cfb, EVP_rc5_32_12_16_cfb64,
7       EVP_rc5_32_12_16_ecb, EVP_rc5_32_12_16_ofb - EVP RC5 cipher
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SYNOPSIS

10        #include <openssl/evp.h>
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12        const EVP_CIPHER *EVP_rc5_32_12_16_cbc(void);
13        const EVP_CIPHER *EVP_rc5_32_12_16_cfb(void);
14        const EVP_CIPHER *EVP_rc5_32_12_16_cfb64(void);
15        const EVP_CIPHER *EVP_rc5_32_12_16_ecb(void);
16        const EVP_CIPHER *EVP_rc5_32_12_16_ofb(void);
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DESCRIPTION

19       The RC5 encryption algorithm for EVP.
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21       EVP_rc5_32_12_16_cbc(), EVP_rc5_32_12_16_cfb(),
22       EVP_rc5_32_12_16_cfb64(), EVP_rc5_32_12_16_ecb(),
23       EVP_rc5_32_12_16_ofb()
24           RC5 encryption algorithm in CBC, CFB, ECB and OFB modes
25           respectively. This is a variable key length cipher with an
26           additional "number of rounds" parameter. By default the key length
27           is set to 128 bits and 12 rounds. Alternative key lengths can be
28           set using EVP_CIPHER_CTX_set_key_length(3). The maximum key length
29           is 2040 bits.
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31           The following rc5 specific ctrls are supported (see
32           EVP_CIPHER_CTX_ctrl(3)).
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34           EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_RC5_ROUNDS, rounds, NULL)
35               Sets the number of rounds to rounds. This must be one of
36               RC5_8_ROUNDS, RC5_12_ROUNDS or RC5_16_ROUNDS.
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38           EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GET_RC5_ROUNDS, 0, &rounds)
39               Stores the number of rounds currently configured in *rounds
40               where *rounds is an int.
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NOTES

43       Developers should be aware of the negative performance implications of
44       calling these functions multiple times and should consider using
45       EVP_CIPHER_fetch(3) instead.  See "Performance" in crypto(7) for
46       further information.
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RETURN VALUES

49       These functions return an EVP_CIPHER structure that contains the
50       implementation of the symmetric cipher. See EVP_CIPHER_meth_new(3) for
51       details of the EVP_CIPHER structure.
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SEE ALSO

54       evp(7), EVP_EncryptInit(3), EVP_CIPHER_meth_new(3)
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57       Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
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59       Licensed under the Apache License 2.0 (the "License").  You may not use
60       this file except in compliance with the License.  You can obtain a copy
61       in the file LICENSE in the source distribution or at
62       <https://www.openssl.org/source/license.html>.
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663.0.9                             2023-07-27       EVP_RC5_32_12_16_CBC(3ossl)
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