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sha1.h

/* This file is part of the KDE project
   Copyright (C) 2001 George Staikos <staikos@kde.org>
   Based heavily on SHA1 code from GPG 1.0.3 (C) 1998 FSF

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/


#ifndef __sha1__ko__h
#define __sha1__ko__h

//#include <kdelibs_export.h>

/* @internal
 */
class SHA1 {
      public:
            SHA1();
            virtual ~SHA1();

            /*
             *  The number of bits in the hash generated.
             */
            virtual int size() const;

            /*
             *  True if all settings are good and we are ready to hash.
             */
            virtual bool readyToGo() const;

            /*
             *  Process a block of data for the hash function.
             */
            virtual int process(const void *block, int len);

            /*
             *  Return the digest as a 20 byte array reference.
             *  Calling this makes readyToGo() == false.
             */
            virtual const unsigned char *hash();

            /*
             *  Reset the digest so a new one can be calculated.
             */
            virtual int reset();

      protected:
            int _hashlen;
            bool _init;

            long _h0, _h1, _h2, _h3, _h4;
            long _nblocks;
            int _count;
            unsigned char _buf[64];
            void transform(void *data);
};


#endif

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