Information Security Theory and Practices. Smart Devices, Convergence and Next Generation Networks [electronic resource] : Second IFIP WG 11.2 International Workshop, WISTP 2008, Seville, Spain, May 13-16, 2008. Proceedings / edited by Jose A. Onieva, Damien Sauveron, Serge Chaumette, Dieter Gollmann, Konstantinos Markantonakis.