git.maemo.org Git - keepassx/blob - src/crypto/sha256.h

   1 /***************************************************************************
   2  *   Copyright (C) 2001-2003 by Christophe Devine                          *
   3  *   Copyright (C) 2005-2006 by Tarek Saidi                                *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; version 2 of the License.               *
   8
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 #ifndef _SHA256_H
  22 #define _SHA256_H
  23
  24 #include <QGlobalStatic>
  25
  26 typedef struct
  27 {
  28     quint32 total[2];
  29     quint32 state[8];
  30     quint8 buffer[64];
  31 }sha256_context;
  32
  33 extern void sha256_starts( sha256_context *ctx );
  34 extern void sha256_update( sha256_context *ctx, const quint8 *input, quint32 length );
  35 extern void sha256_finish( sha256_context *ctx, quint8 digest[32] );
  36
  37 class SHA256{
  38         public:
  39                 SHA256(){sha256_starts(&ctx);}
  40                 ~SHA256(){overwriteCtx(&ctx);};
  41                 void update(void* input,quint32 length){sha256_update(&ctx,(quint8*)input,length);}
  42                 void finish(void* digest){sha256_finish(&ctx,(quint8*)digest);}
  43                 static void hashBuffer(const void* input, void* digest,quint32 length);
  44         private:
  45                 static void overwriteCtx(sha256_context* ctx);
  46                 sha256_context ctx;
  47 };
  48
  49
  50 #endif /* sha256.h */