Cryptology and Network Security

This book constitutes the refereed proceedings of the 6th International Conference on Cryptology and Network Security, CANS 2007, held in Singapore, in December 2007. The 17 revised full papers presented were carefully reviewed and selected. The papers are organized in topical sections on signatures, network security, secure keyword search and private information retrieval, public key encryption, intrusion detection, email security, denial of service attacks, and authentication.