include/openssl/blowfish.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_BLOWFISH_H
  11 # define HEADER_BLOWFISH_H
  12
  13 # include <openssl/opensslconf.h>
  14
  15 # ifndef OPENSSL_NO_BF
  16 # include <openssl/e_os2.h>
  17 # ifdef  __cplusplus
  18 extern "C" {
  19 # endif
  20
  21 # define BF_ENCRYPT      1
  22 # define BF_DECRYPT      0
  23
  24 /*-
  25  * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  26  * ! BF_LONG has to be at least 32 bits wide.                     !
  27  * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  28  */
  29 # define BF_LONG unsigned int
  30
  31 # define BF_ROUNDS       16
  32 # define BF_BLOCK        8
  33
  34 typedef struct bf_key_st {
  35     BF_LONG P[BF_ROUNDS + 2];
  36     BF_LONG S[4 * 256];
  37 } BF_KEY;
  38
  39 void BF_set_key(BF_KEY *key, int len, const unsigned char *data);
  40
  41 void BF_encrypt(BF_LONG *data, const BF_KEY *key);
  42 void BF_decrypt(BF_LONG *data, const BF_KEY *key);
  43
  44 void BF_ecb_encrypt(const unsigned char *in, unsigned char *out,
  45                     const BF_KEY *key, int enc);
  46 void BF_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
  47                     const BF_KEY *schedule, unsigned char *ivec, int enc);
  48 void BF_cfb64_encrypt(const unsigned char *in, unsigned char *out,
  49                       long length, const BF_KEY *schedule,
  50                       unsigned char *ivec, int *num, int enc);
  51 void BF_ofb64_encrypt(const unsigned char *in, unsigned char *out,
  52                       long length, const BF_KEY *schedule,
  53                       unsigned char *ivec, int *num);
  54 const char *BF_options(void);
  55
  56 # ifdef  __cplusplus
  57 }
  58 # endif
  59 # endif
  60
  61 #endif