Cryptography and Coding

This book constitutes the refereed proceedings of the 9th IMA International Conference on Cryptography and Coding, held in Cirencester, UK in December 2003.The 25 revised full papers presented together with 4 invited contributions were carefully reviewed and selected from 49 submissions. The papers are organized in topical sections on coding and applications, applications of coding in cryptography, cryptography, cryptanalysis, network security and protocols.