Add crypto classes and tests. Link to libgcrypt.

src/crypto/Crypto.cpp

@@ -0,0 +1,80 @@
+/*
+ *  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 "Crypto.h"
+
+#include <QtCore/QMutex>
+
+#include <gcrypt.h>
+
+bool Crypto::m_initiated(false);
+
+int gcry_qt_mutex_init(void** p_sys)
+{
+    *p_sys = new QMutex();
+    return 0;
+}
+
+int gcry_qt_mutex_destroy(void** p_sys)
+{
+    delete reinterpret_cast<QMutex*>(*p_sys);
+    return 0;
+}
+
+int gcry_qt_mutex_lock(void** p_sys)
+{
+    reinterpret_cast<QMutex*>(*p_sys)->lock();
+    return 0;
+}
+
+int gcry_qt_mutex_unlock(void** p_sys)
+{
+    reinterpret_cast<QMutex*>(*p_sys)->unlock();
+    return 0;
+}
+
+static const struct gcry_thread_cbs gcry_threads_qt =
+{
+    GCRY_THREAD_OPTION_USER,
+    NULL,
+    gcry_qt_mutex_init,
+    gcry_qt_mutex_destroy,
+    gcry_qt_mutex_lock,
+    gcry_qt_mutex_unlock
+};
+
+Crypto::Crypto()
+{
+}
+
+void Crypto::init()
+{
+    if (m_initiated) {
+        return;
+    }
+
+    gcry_control(GCRYCTL_SET_THREAD_CBS, &gcry_threads_qt);
+    gcry_check_version(0);
+    gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0);
+
+    m_initiated = true;
+}
+
+bool Crypto::selfTest()
+{
+    return (gcry_control(GCRYCTL_SELFTEST) == 0);
+}