Identification -- Improved Zero-Knowledge Identification with Lattices -- Identification Schemes of Proofs of Ability Secure against Concurrent Man-in-the-Middle Attacks -- Auto Proofs -- A Calculus for Game-Based Security Proofs -- Automating Computational Proofs for Public-Key-Based Key Exchange -- Signature I -- A Framework for Constructing Convertible Undeniable Signatures -- Efficient Confirmer Signatures from the "Signature of a Commitment" Paradigm -- Hash Function -- Collision Resistant Double-Length Hashing -- Interpreting Hash Function Security Proofs -- Protocol -- Formal and Precise Analysis of Soundness of Several Shuffling Schemes -- Distinguishing Distributions Using Chernoff Information -- Signature II -- A Suite of Non-pairing ID-Based Threshold Ring Signature Schemes with Different Levels of Anonymity (Extended Abstract) -- An Anonymous Designated Verifier Signature Scheme with Revocation: How to Protect a Company's Reputation -- Invited Talk -- Cryptographic Protocols from Lattices -- Encryption -- A Timed-Release Proxy Re-encryption Scheme and Its Application to Fairly-Opened Multicast Communication -- Efficient Broadcast Encryption with Personalized Messages -- Toward an Easy-to-Understand Structure for Achieving Chosen Ciphertext Security from the Decisional Diffie-Hellman Assumption -- Signcryption -- Identity Based Public Verifiable Signcryption Scheme -- Fully Secure Threshold Unsigncryption.

This book constitutes the proceedings of the 4th provable security conference held in Malacca, Malaysia in October 2010. The 17 papers presented were carefully reviewed and selected from 47 submissions. The papers are divided in topical sections on identification, auto proofs, signature, hash function, protocol, encryption, and signcryption.