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diff --git a/kbiff/kbiffcodec.h b/kbiff/kbiffcodec.h
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+++ b/kbiff/kbiffcodec.h
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+/*
+   This is taken from kdmcodec.h from kdelibs/kdecore in KDE 2.2
+   -------------------------------------------------------------
+
+   Copyright (C) 2000-2001 Dawit Alemayehu <adawit@kde.org>
+   Copyright (C) 2001 Rik Hemsley (rikkus) <rik@kde.org>
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License (LGPL) as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+   This KMD5 class is based on a C++ implementation of
+   "RSA Data Security, Inc. MD5 Message-Digest Algorithm" by
+   Mordechai T. Abzug,	Copyright (c) 1995.  This implementation
+   passes the test-suite as defined by RFC 1321.
+
+   RFC 1321 "MD5 Message-Digest Algorithm" Copyright (C) 1991-1992.
+   RSA Data Security, Inc. Created 1991. All rights reserved.
+
+   The encoding and decoding utilities in KCodecs with the exception of
+   quoted-printable were ported from the HTTPClient java package by Ronald
+   Tschalär Copyright (C) 1996-1999. The quoted-printable codec as described
+   in RFC 2045, section 6.7. is by Rik Hemsley (C) 2001.
+*/
+
+#ifndef _KBIFFCODEC_H
+#define _KBIFFCODEC_H
+
+#include <qstring.h>
+
+class KBiffCodecs
+{
+public:
+
+  /**
+   * Encodes the given string using the base64 algorithm.
+   *
+   * @param str       the string to be encoded.
+   * @return          the decoded string.
+   */
+  static QString base64Encode( const QString& str );
+
+  /**
+   * Decodes the given data that was encoded using the
+   * base64 algorithm.
+   *
+   * @param in   the base64-encoded data to be decoded.
+   * @return     the decoded data.
+   */
+  static QString base64Decode( const QString& in );
+
+private:
+  KBiffCodecs();
+};
+
+#endif