Where Have All the Protocols Gone? -- A Protocol’s Life After Attacks... -- A Protocol’s Life After Attacks... -- Towards Flexible Credential Negotiation Protocols -- Towards Flexible Credential Negotiation Protocols -- Man-in-the-Middle in Tunnelled Authentication Protocols -- Man-in-the-Middle in Tunnelled Authentication Protocols -- Towards a Framework for Autonomic Security Protocols -- Towards a Framework for Autonomic Security Protocols -- Client v. Server Side Protocols, Interfaces and Storage -- Client v. Server Side Protocols, Interfaces and Storage -- Guaranteeing Access in Spite of Distributed Service-Flooding Attacks -- Guaranteeing Access in Spite of Distributed Service-Flooding Attacks -- Protocol Codesign -- Protocol Codesign -- Enforcing Security Policies for Distributed Objects Applications -- Enforcing Security Policies for Distributed Objects Applications -- Regular SPKI -- Regular SPKI -- Federated Identity-Management Protocols -- Federated Identity-Management Protocols -- Enforcing the Unenforceable -- Is the Verification Problem for Cryptographic Protocols Solved? -- Secure Sessions from Weak Secrets -- Secure Sessions from Weak Secrets -- Panel Session: Is Protocol Modelling Finished? -- WAR: Wireless Anonymous Routing -- WAR: Wireless Anonymous Routing -- Limitations of IPsec Policy Mechanisms -- Limitations of IPsec Policy Mechanisms -- Deniable Authenticated Key Establishment for Internet Protocols -- Deniable Authenticated Key Establishment for Internet Protocols -- Protocols for Supporting a Public Key Infrastructure in Ad Hoc Networks -- Protocols for Supporting a Public Key Infrastructure in Ad Hoc Networks -- What We Can Learn from API Security -- Addressing New Challenges by Building Security Protocols Around Graphs -- From Security Protocols to Systems Security -- From Security Protocols to Systems Security -- Biometrics to Enhance Smartcard Security -- Biometrics to Enhance Smartcard Security -- Blind Publication: A Copyright Library without Publication or Trust -- Blind Publication: A Copyright Library Without Publication or Trust.

This book constitutes the thoroughly refereed post-proceedings of the 11th International Workshop on Security Protocols, held in Cambridge, UK, in April 2003. The 25 revised full papers presented together with edited transcriptions of some of the discussions following the presentations have passed through two rounds of reviewing, revision, and selection. Among the topics addressed are authentication, mobile ad-hoc network security, SPKI, verification of cryptographic protocols, denial of service, access control, protocol attacks, API security, biometrics for security, and others.