This book constitutes the refereed proceedings of the 24th AnnualInternational Cryptology Conference, CRYPTO 2004, held in SantaBarbara, California, USA in August 2004. The 33 revised full paperspresented together with one invited paper were carefully reviewed andselected from 211 submissions. The papers are organized in topicalsections in linear cryptanalysis, group signatures, foundations,efficient representations, public key cryptanalysis, zero-knowledge,hash collision, secure computation, stream cipher cryptanalysis,public key encryption, bounded storage model, key management, andcomputationally unbounded adversaries.