http://www.linuxquestions.org/bookmarks/ Recent bookmarks posted to LinuxQuestions.org Bookmarks 60 http://www.cl.cam.ac.uk/~rja14/book.html This ebook has topics on: Cryptography, Access control, telecom, Electronic and Information Warfare and other topics on security. Readable in pdf format. muha Thu, 16 Aug 2007 15:17:08 +0000 cryptography ebook encrypt encryption pdf security