PKI Management -- Use of a Validation Authority to Provide Risk Management for the PKI Relying Party -- Modeling and Evaluation of Certification Path Discovery in the Emerging Global PKI -- Distributing Security-Mediated PKI Revisited -- Authentication I -- An Improved Lu-Cao’s Remote User Authentication Scheme Using Smart Card -- Forward Secure Password-Enabled PKI with Instant Revocation -- Separable Identity-Based Deniable Authentication: Cryptographic Primitive for Fighting Phishing -- Cryptography -- Breaking Yum and Lee Generic Constructions of Certificate-Less and Certificate-Based Encryption Schemes -- On the Security of Multilevel Cryptosystems over Class Semigroups of Imaginary Quadratic Non-maximal Orders -- Short Linkable Ring Signatures Revisited -- Applications -- An Infrastructure Supporting Secure Internet Routing -- Fighting E-Mail Abuses: The EMPE Approach -- DomainKeys Identified Mail Demonstrates Good Reasons to Re-invent the Wheel -- Towards Secure Electronic Workflows -- An Access Control System for Multimedia Content Distribution -- Efficient Conjunctive Keyword Search on Encrypted Data Storage System -- Authentication II -- Enhanced Forward-Secure User Authentication Scheme with Smart Cards -- Pseudonymous PKI for Ubiquitous Computing -- An Efficient POP Protocol Based on the Signcryption Scheme for the WAP PKI -- On the Resilience of Key Agreement Protocols to Key Compromise Impersonation -- Short Contributions -- A PKI System for Detecting the Exposure of a User’s Secret Key -- A Guide to the Nightmares of the Certification Service Provider -- A High-Level 3G Wireless PKI Solution for Secure Healthcare Communications -- Identity-Based Strong Multi-Designated Verifiers Signatures.

This book constitutes the refereed proceedings of the Third European Public Key Infrastructure Workshop: Theory and Practice, EuroPKI 2006, held in Torino, Italy, in June 2006. The 18 revised full papers and 4 short papers presented were carefully reviewed and selected from about 50 submissions. The papers are organized in topical sections on PKI management, authentication, cryptography, applications, and short contributions.