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+/* 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.LIB. 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
+
+
+/* @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