include/reactos/libs/gnutls/nettle/blowfish.h

   1 /* blowfish.h
   2  *
   3  * Blowfish block cipher.
   4  */
   5
   6 /* nettle, low-level cryptographics library
   7  *
   8  * Copyright (C) 1998, 2001 FSF, Ray Dassen, Niels Möller
   9  *
  10  * The nettle library is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU Lesser General Public License as published by
  12  * the Free Software Foundation; either version 2.1 of the License, or (at your
  13  * option) any later version.
  14  *
  15  * The nettle library is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  17  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  18  * License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public License
  21  * along with the nettle library; see the file COPYING.LIB.  If not, write to
  22  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  23  * MA 02111-1301, USA.
  24  */
  25
  26 #ifndef NETTLE_BLOWFISH_H_INCLUDED
  27 #define NETTLE_BLOWFISH_H_INCLUDED
  28
  29 #include "nettle-types.h"
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 /* Name mangling */
  36 #define blowfish_set_key nettle_blowfish_set_key
  37 #define blowfish_encrypt nettle_blowfish_encrypt
  38 #define blowfish_decrypt nettle_blowfish_decrypt
  39
  40 #define BLOWFISH_BLOCK_SIZE 8
  41
  42 /* Variable key size between 64 and 448 bits. */
  43 #define BLOWFISH_MIN_KEY_SIZE 8
  44 #define BLOWFISH_MAX_KEY_SIZE 56
  45
  46 /* Default to 128 bits */
  47 #define BLOWFISH_KEY_SIZE 16
  48
  49 #define _BLOWFISH_ROUNDS 16
  50
  51         struct blowfish_ctx {
  52                 uint32_t s[4][256];
  53                 uint32_t p[_BLOWFISH_ROUNDS + 2];
  54         };
  55
  56 /* On success, returns 1 and sets ctx->status to BLOWFISH_OK (zero).
  57  * On error, returns 0 and sets ctx->status to BLOWFISH_WEAK_KEY. */
  58         int
  59          blowfish_set_key(struct blowfish_ctx *ctx,
  60                           unsigned length, const uint8_t * key);
  61
  62         void
  63          blowfish_encrypt(const struct blowfish_ctx *ctx,
  64                           unsigned length, uint8_t * dst,
  65                           const uint8_t * src);
  66         void
  67          blowfish_decrypt(const struct blowfish_ctx *ctx,
  68                           unsigned length, uint8_t * dst,
  69                           const uint8_t * src);
  70
  71 #ifdef __cplusplus
  72 }
  73 #endif
  74 #endif                          /* NETTLE_BLOWFISH_H_INCLUDED */