Rana Barua Tanja Lange Progress in Cryptology - INDOCRYPT 2006, 7th International Conference on Cryptology in India, Kolkata, India, December 11-13, 2006, Proceedings INDOCRYPT Lecture Notes in Computer Science 4329 Springer 2006 3-540-49767-6 db/conf/indocrypt/indocrypt2006.html