Added Licence information

README

@@ -31,6 +31,9 @@ in order to have a sufficient time variation between different executions.
 
 We tested this function in Windows XP/2003, Sun Solaris and Debian/Ubuntu Linux,
 where it provided as many bits of entropy as requested by the user while keeping
-the running time relatively low.
+the running time relatively low. 
+
+This software was written based on research funded by the ERC project CODAMODA
+and is released under the New BSD License.
 
 

srand.php

@@ -1,6 +1,38 @@
 <?php
 
 /*
+ * Author:
+ * George Argyros <argyros.george@gmail.com>
+ *
+ * Copyright (c) 2012, George Argyros
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met: 
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer. 
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those
+ * of the authors and should not be interpreted as representing official policies, 
+ * either expressed or implied, of the FreeBSD Project.
+ *
+ *
+ *
  * The function is providing, at least at the systems tested :), 
  * $len bytes of entropy under any PHP installation or operating system.
  * The execution time should be at most 10-20 ms in any system.