Communications and Multimedia Security. Advanced Techniques for Network and Data Protection 7th IFIP TC-6 TC-11 International Conference, CMS 2003, Torino, Italy, October 2-3, 2003, Proceedings - Lioy, Antonio; Lioy, Antonio; Mazzocchi, Daniele; Mazzocchi, Daniele (Springer Berlin Heidelberg : Imprint: Springer, 2003)