runtime/kwalletd/backend/sha1.h

   1 /* This file is part of the KDE project
   2    Copyright (C) 2001 George Staikos <staikos@kde.org>
   3    Based heavily on SHA1 code from GPG 1.0.3 (C) 1998 FSF
   4
   5    This library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public
   7    License as published by the Free Software Foundation; either
   8    version 2 of the License, or (at your option) any later version.
   9
  10    This library 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 GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public License
  16    along with this library; see the file COPYING.LIB.  If not, write to
  17    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18    Boston, MA 02110-1301, USA.
  19 */
  20
  21
  22 #ifndef __sha1__ko__h
  23 #define __sha1__ko__h
  24
  25 #include <kwallet_export.h>
  26
  27 /* @internal
  28  */
  29 class KWALLETBACKEND_EXPORT SHA1 {
  30         public:
  31                 SHA1();
  32                 ~SHA1();
  33
  34                 /*
  35                  *  The number of bits in the hash generated.
  36                  */
  37                 int size() const;
  38
  39                 /*
  40                  *  True if all settings are good and we are ready to hash.
  41                  */
  42                 bool readyToGo() const;
  43
  44                 /*
  45                  *  Process a block of data for the hash function.
  46                  */
  47                 int process(const void *block, int len);
  48
  49                 /*
  50                  *  Return the digest as a 20 byte array reference.
  51                  *  Calling this makes readyToGo() == false.
  52                  */
  53                 const unsigned char *hash();
  54
  55                 /*
  56                  *  Reset the digest so a new one can be calculated.
  57                  */
  58                 int reset();
  59
  60         protected:
  61                 int _hashlen;
  62                 bool _init;
  63
  64                 long _h0, _h1, _h2, _h3, _h4;
  65                 long _nblocks;
  66                 int _count;
  67                 unsigned char _buf[64];
  68                 void transform(void *data);
  69 };
  70
  71
  72 #endif