Information security theory and practices : smart devices convergence and next generation networks ; second IFIP WG 11.2 international workshop WISTP 2008 Seville Spain May 13 16 2008 ; proceedings Smart Devices Untraceability of RFID Protocols A Graphical PIN Authentication Mechanism with Applications to Smart Cards and Low Cost Devices Software Cannot Protect Software: An Argument for Dedicated Hardware in Security and a Categorization of the Trustworthiness of Information Network Security Probabilistic Identification for Hard to Classify Protocol A Self certified and Sybil Free Framework for Secure Digital Identity Domain Buildup Availability for DHT Based Overlay Networks with Unidirectional Routing Convergence Network Smart Card Performing U(SIM) Functionalities in AAA Protocol Architectures Using TPMs to Secure Vehicular Ad Hoc Networks (VANETs) Cryptography Algebra for Capability Based Attack Correlation On the BRIP Algorithms Security for RSA. This volume constitutes the refereed proceedings of the Second IFIP WG 11.2 International Workshop on Information Security Theory and Practices: Smart Devices Convergence and Next Generation Networks WISTP 2008 held in Seville Spain in May 2008. The 10 revised full papers presented were carefully reviewed and selected from numerous submissions for inclusion in the book; they examine the rapid development of information technologies and the transition to next generation networks. The papers focus on the security of these complex and resource constrained systems and are organized in topical sections on smart devices network security convergence and cryptography.