Javier Hernando, Eduardo Fernández-Medina, Manu Malek: SECRYPT 2007, Proceedings of the International Conference on Security and Cryptography, Barcelona, Spain, July 28-13, 2007, SECRYPT is part of ICETE - The International Joint Conference on e-Business and Telecommunications. INSTICC Press 2007, ISBN 978-989-8111-12-8