release/src/router/mysql/extra/yassl/taocrypt/include/rabbit.hpp

   1 /*
   2    Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; version 2 of the License.
   7
   8    This program is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11    GNU General Public License for more details.
  12
  13    You should have received a copy of the GNU General Public License
  14    along with this program; see the file COPYING. If not, write to the
  15    Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  16    MA  02110-1301  USA.
  17 */
  18
  19 /* rabbit.hpp defines Rabbit
  20 */
  21
  22
  23 #ifndef TAO_CRYPT_RABBIT_HPP
  24 #define TAO_CRYPT_RABBIT_HPP
  25
  26 #include "misc.hpp"
  27
  28 namespace TaoCrypt {
  29
  30
  31 // Rabbit encryption and decryption
  32 class Rabbit {
  33 public:
  34
  35     typedef Rabbit Encryption;
  36     typedef Rabbit Decryption;
  37
  38     enum RabbitCtx { Master = 0, Work = 1 };
  39
  40     Rabbit() {}
  41
  42     void Process(byte*, const byte*, word32);
  43     void SetKey(const byte*, const byte*);
  44 private:
  45     struct Ctx {
  46         word32 x[8];
  47         word32 c[8];
  48         word32 carry;
  49     };
  50
  51     Ctx masterCtx_;
  52     Ctx workCtx_;
  53
  54     void NextState(RabbitCtx);
  55     void SetIV(const byte*);
  56
  57     Rabbit(const Rabbit&);                  // hide copy
  58     const Rabbit operator=(const Rabbit&);  // and assign
  59 };
  60
  61 } // namespace
  62
  63
  64 #endif // TAO_CRYPT_RABBIT_HPP
  65