Invited Talk I -- Trends and Challenges for Securer Cryptography in Practice -- Stream Ciphers Analysis -- Distinguishing Attacks on T-Functions -- Introducing a New Variant of Fast Algebraic Attacks and Minimizing Their Successive Data Complexity -- Cryptography Based on Combinatorics -- Equivalent Keys in HFE, C*, and Variations -- A New Structural Attack for GPT and Variants -- A Family of Fast Syndrome Based Cryptographic Hash Functions -- Cryptographic Protocols -- Optimization of Electronic First-Bid Sealed-Bid Auction Based on Homomorphic Secret Sharing -- Identity Based Delegation Network -- On Session Key Construction in Provably-Secure Key Establishment Protocols -- On the Security of Probabilistic Multisignature Schemes and Their Optimality -- Invited Talk II -- Efficient Secure Group Signatures with Dynamic Joins and Keeping Anonymity Against Group Managers -- Implementation Issues -- An Analysis of Double Base Number Systems and a Sublinear Scalar Multiplication Algorithm -- Power Analysis by Exploiting Chosen Message and Internal Collisions – Vulnerability of Checking Mechanism for RSA-Decryption -- Optimization of the MOVA Undeniable Signature Scheme -- Unconventional Cryptography -- Questionable Encryption and Its Applications -- Twin RSA -- Invited Talk III -- Security of Two-Party Identity-Based Key Agreement -- Block Cipher Cryptanalysis -- Related-Key Differential Attacks on Cobra-S128, Cobra-F64a, and Cobra-F64b -- Advanced Slide Attacks Revisited: Realigning Slide on DES -- New Multiset Attacks on Rijndael with Large Blocks -- Homomorphic Encryption -- Paillier’s Cryptosystem Modulo p 2 q and Its Applications to Trapdoor Commitment Schemes -- Homomorphic Cryptosystems Based on Subgroup Membership Problems.

This book constitutes the refereed proceedings of the First International Conference on Cryptology hosted in Malaysia, held in Kuala Lumpur, Malaysia in September 2005, in conjunction with the e-Secure Malaysia 2005 convention. The 19 revised full papers presented together with 3 invited papers were carefully reviewed and selected from a total of 90 submissions. The papers are organized in topical sections on stream ciphers analysis, cryptography based on combinatorics, cryptographic protocols, implementation issues, unconventional cryptography, block cipher cryptanalysis, and homomorphic encryption.