--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/corelib/tools/qcryptographichash.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,200 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qcryptographichash.h>
+
+#ifdef Q_OS_SYMBIAN
+#define _MD5_H_ // Needed to disable system header
+#endif
+
+#include "../../3rdparty/md5/md5.h"
+#include "../../3rdparty/md5/md5.cpp"
+#include "../../3rdparty/md4/md4.h"
+#include "../../3rdparty/md4/md4.cpp"
+#include "../../3rdparty/sha1/sha1.cpp"
+
+
+QT_BEGIN_NAMESPACE
+
+class QCryptographicHashPrivate
+{
+public:
+    QCryptographicHash::Algorithm method;
+    union {
+        MD5Context md5Context;
+        md4_context md4Context;
+        Sha1State sha1Context;
+    };
+    QByteArray result;
+};
+
+/*!
+  \class QCryptographicHash
+
+  \brief The QCryptographicHash class provides a way to generate cryptographic hashes.
+
+  \since 4.3
+
+  \ingroup tools
+  \reentrant
+
+  QCryptographicHash can be used to generate cryptographic hashes of binary or text data.
+
+  Currently MD4, MD5, and SHA-1 are supported.
+*/
+
+/*!
+  \enum QCryptographicHash::Algorithm
+
+  \value Md4 Generate an MD4 hash sum
+  \value Md5 Generate an MD5 hash sum
+  \value Sha1 Generate an SHA1 hash sum
+*/
+
+/*!
+  Constructs an object that can be used to create a cryptographic hash from data using \a method.
+*/
+QCryptographicHash::QCryptographicHash(Algorithm method)
+    : d(new QCryptographicHashPrivate)
+{
+    d->method = method;
+    reset();
+}
+
+/*!
+  Destroys the object.
+*/
+QCryptographicHash::~QCryptographicHash()
+{
+    delete d;
+}
+
+/*!
+  Resets the object.
+*/
+void QCryptographicHash::reset()
+{
+    switch (d->method) {
+    case Md4:
+        md4_init(&d->md4Context);
+        break;
+    case Md5:
+        MD5Init(&d->md5Context);
+        break;
+    case Sha1:
+        sha1InitState(&d->sha1Context);
+        break;
+    }
+    d->result.clear();
+}
+
+/*!
+    Adds the first \a length chars of \a data to the cryptographic
+    hash.
+*/
+void QCryptographicHash::addData(const char *data, int length)
+{
+    switch (d->method) {
+    case Md4:
+        md4_update(&d->md4Context, (const unsigned char *)data, length);
+        break;
+    case Md5:
+        MD5Update(&d->md5Context, (const unsigned char *)data, length);
+        break;
+    case Sha1:
+        sha1Update(&d->sha1Context, (const unsigned char *)data, length);
+        break;
+    }    
+    d->result.clear();
+}
+
+/*!
+  /overload
+*/
+void QCryptographicHash::addData(const QByteArray &data)
+{
+    addData(data.constData(), data.length());
+}
+
+/*!
+  Returns the final hash value.
+
+  \sa QByteArray::toHex()
+*/
+QByteArray QCryptographicHash::result() const
+{
+    if (!d->result.isEmpty()) 
+        return d->result;
+
+    switch (d->method) {
+    case Md4: {
+        md4_context copy = d->md4Context;
+        d->result.resize(MD4_RESULTLEN);
+        md4_final(&copy, (unsigned char *)d->result.data());
+        break;
+    }
+    case Md5: {
+        MD5Context copy = d->md5Context;
+        d->result.resize(16);
+        MD5Final(&copy, (unsigned char *)d->result.data());
+        break;
+    }
+    case Sha1: {
+        Sha1State copy = d->sha1Context;
+        d->result.resize(20);
+        sha1FinalizeState(&copy);
+        sha1ToHash(&copy, (unsigned char *)d->result.data());
+    }
+    }
+    return d->result;
+}
+
+/*!
+  Returns the hash of \a data using \a method.
+*/
+QByteArray QCryptographicHash::hash(const QByteArray &data, Algorithm method)
+{
+    QCryptographicHash hash(method);
+    hash.addData(data);
+    return hash.result();
+}
+
+QT_END_NAMESPACE