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+//
+// VMime library (http://www.vmime.org)
+// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
+//
+// 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 3 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.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// Linking this library statically or dynamically with other modules is making
+// a combined work based on this library. Thus, the terms and conditions of
+// the GNU General Public License cover the whole combination.
+//
+
+#ifndef VMIME_UTILITY_RANDOM_HPP_INCLUDED
+#define VMIME_UTILITY_RANDOM_HPP_INCLUDED
+
+
+#include "vmime/types.hpp"
+
+
+namespace vmime {
+namespace utility {
+
+
+/** Pseudo-random number generator.
+ */
+class random {
+
+public:
+
+ /** Return a new random number.
+ *
+ * @return random number
+ */
+ static unsigned int getNext();
+
+ /** Return the current time as a number (may be used to
+ * build "random" strings).
+ *
+ * @return time as a number
+ */
+ static unsigned int getTime();
+
+ /** Return the current process number (may be user to
+ * build "random" strings).
+ *
+ * @return process number
+ */
+ static unsigned int getProcess();
+
+ /** Return a random character string with the specified length.
+ *
+ * @param length length of the string to generate
+ * @param randomChars list of characters to use
+ * @return random string
+ */
+ static const string getString(
+ const size_t length,
+ const string& randomChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+ );
+};
+
+
+} // utility
+} // vmime
+
+
+#endif // VMIME_UTILITY_RANDOM_HPP_INCLUDED