Add crypto classes and tests. Link to libgcrypt.

src/crypto/Random.cpp

@@ -0,0 +1,39 @@
+/*
+ *  Copyright (C) 2010 Felix Geyer <debfx@fobos.de>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 2 or (at your option)
+ *  version 3 of the License.
+ *
+ *  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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "Random.h"
+
+#include <gcrypt.h>
+
+void Random::randomize(QByteArray& ba)
+{
+    gcry_randomize(ba.data(), ba.size(), GCRY_STRONG_RANDOM);
+}
+
+QByteArray Random::randomArray(int len)
+{
+    QByteArray ba;
+    ba.resize(len);
+
+    randomize(ba);
+
+    return ba;
+}
+
+Random::Random()
+{
+}