Thomas Johansson Subhamoy Maitra Progress in Cryptology - INDOCRYPT 2003, 4th International Conference on Cryptology in India, New Delhi, India, December 8-10, 2003, Proceedings INDOCRYPT Lecture Notes in Computer Science 2904 Springer 2003 3-540-20609-4 db/conf/indocrypt/indocrypt2003.html