This book constitutes the refereed proceedings of the 9th International Conference on Information and Communications Security, ICICS 2007, held in Zhengzhou, China, in December 2007. The papers presented were carefully reviewed and selected. The papers are organized in topical sections on authentication and key exchange, digital signatures, applications, watermarking, fast implementations, applied cryptography, cryptanalysis, formal analysis, system security, and network security.

This book constitutes the refereed proceedings of the 9th International Conference on Information and Communications Security, ICICS 2007, held in Zhengzhou, China, in December 2007. The papers presented were carefully reviewed and selected. The papers are organized in topical sections on authentication and key exchange, digital signatures, applications, watermarking, fast implementations, applied cryptography, cryptanalysis, formal analysis, system security, and network security.