src/SHA.h

   1 //
   2 // This file is part of the aMule Project.
   3 //
   4 // Copyright (c) 2004-2008 Angel Vidal ( kry@amule.org )
   5 // Copyright (c) 2003-2008 aMule Team ( admin@amule.org / http://www.amule.org )
   6 //
   7 // Any parts of this program derived from the xMule, lMule or eMule project,
   8 // or contributed by third-party developers are copyrighted by their
   9 // respective authors.
  10 //
  11 // This program is free software; you can redistribute it and/or modify
  12 // it under the terms of the GNU General Public License as published by
  13 // the Free Software Foundation; either version 2 of the License, or
  14 // (at your option) any later version.
  15 //
  16 // This program is distributed in the hope that it will be useful,
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 // GNU General Public License for more details.
  20 //
  21 // You should have received a copy of the GNU General Public License
  22 // along with this program; if not, write to the Free Software
  23 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
  24 //
  25 // Kry - Modified version of the original SHA.cpp to work on linux and
  26 // use wxWidgets. Original license follows.
  27 //
  28
  29 /*
  30  ---------------------------------------------------------------------------
  31  Copyright (c) 2002-2008 Dr Brian Gladman ( brg@gladman.me.uk )
  32  All rights reserved.
  33
  34  LICENSE TERMS
  35
  36  The free distribution and use of this software in both source and binary
  37  form is allowed (with or without changes) provided that:
  38
  39    1. distributions of this source code include the above copyright
  40       notice, this list of conditions and the following disclaimer;
  41
  42    2. distributions in binary form include the above copyright
  43       notice, this list of conditions and the following disclaimer
  44       in the documentation and/or other associated materials;
  45
  46    3. the copyright holder's name is not used to endorse products
  47       built using this software without specific written permission.
  48
  49  ALTERNATIVELY, provided that this notice is retained in full, this product
  50  may be distributed under the terms of the GNU General Public License (GPL),
  51  in which case the provisions of the GPL apply INSTEAD OF those given above.
  52
  53  DISCLAIMER
  54
  55  This software is provided 'as is' with no explicit or implied warranties
  56  in respect of its properties, including, but not limited to, correctness
  57  and/or fitness for purpose.
  58  ---------------------------------------------------------------------------
  59  Issue Date: 30/11/2002
  60
  61  This is a byte oriented version of SHA1 that operates on arrays of bytes
  62  stored in memory. It runs at 22 cycles per byte on a Pentium P4 processor
  63 */
  64
  65 #ifndef __SHA_H__
  66 #define __SHA_H__
  67
  68 #include "SHAHashSet.h"
  69
  70 class CSHA : public CAICHHashAlgo
  71 {
  72 // Construction
  73 public:
  74         CSHA();
  75         virtual ~CSHA() {};
  76 // Operations
  77 public:
  78         virtual void    Reset();
  79         virtual void    Add(const void* pData, uint32 nLength);
  80         virtual void    Finish(CAICHHash& Hash);
  81         virtual void    GetHash(CAICHHash& Hash);
  82 protected:
  83         void                    Compile();
  84 private:
  85         uint32  m_nCount[2];
  86         uint32  m_nHash[5];
  87         uint32  m_nBuffer[16];
  88 };
  89
  90 #define SHA1_BLOCK_SIZE         64
  91 #define SHA1_DIGEST_SIZE        20
  92
  93 #endif // __SHA_H__
  94 // File_checked_for_headers