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 This book constitutes the refereed proceedings of the 7th IFIP International Conference on Communications and Multimedia Security CMS 2003 held in Torino Italy in October 2003. The 21 revised full papers presented were carefully reviewed and selected fro presentation. The papers are organized in topical sections on cryptography network security mobile and wireless network security trust and privacy application security and multimedia security