include/openssl/rc5.h

   1 /*
   2  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #ifndef HEADER_RC5_H
  11 # define HEADER_RC5_H
  12
  13 # include <openssl/opensslconf.h>
  14
  15 # ifndef OPENSSL_NO_RC5
  16 # ifdef  __cplusplus
  17 extern "C" {
  18 # endif
  19
  20 # define RC5_ENCRYPT     1
  21 # define RC5_DECRYPT     0
  22
  23 # define RC5_32_INT unsigned int
  24
  25 # define RC5_32_BLOCK            8
  26 # define RC5_32_KEY_LENGTH       16/* This is a default, max is 255 */
  27
  28 /*
  29  * This are the only values supported.  Tweak the code if you want more The
  30  * most supported modes will be RC5-32/12/16 RC5-32/16/8
  31  */
  32 # define RC5_8_ROUNDS    8
  33 # define RC5_12_ROUNDS   12
  34 # define RC5_16_ROUNDS   16
  35
  36 typedef struct rc5_key_st {
  37     /* Number of rounds */
  38     int rounds;
  39     RC5_32_INT data[2 * (RC5_16_ROUNDS + 1)];
  40 } RC5_32_KEY;
  41
  42 void RC5_32_set_key(RC5_32_KEY *key, int len, const unsigned char *data,
  43                     int rounds);
  44 void RC5_32_ecb_encrypt(const unsigned char *in, unsigned char *out,
  45                         RC5_32_KEY *key, int enc);
  46 void RC5_32_encrypt(unsigned long *data, RC5_32_KEY *key);
  47 void RC5_32_decrypt(unsigned long *data, RC5_32_KEY *key);
  48 void RC5_32_cbc_encrypt(const unsigned char *in, unsigned char *out,
  49                         long length, RC5_32_KEY *ks, unsigned char *iv,
  50                         int enc);
  51 void RC5_32_cfb64_encrypt(const unsigned char *in, unsigned char *out,
  52                           long length, RC5_32_KEY *schedule,
  53                           unsigned char *ivec, int *num, int enc);
  54 void RC5_32_ofb64_encrypt(const unsigned char *in, unsigned char *out,
  55                           long length, RC5_32_KEY *schedule,
  56                           unsigned char *ivec, int *num);
  57
  58 # ifdef  __cplusplus
  59 }
  60 # endif
  61 # endif
  62
  63 #endif