Progress in Cryptology - INDOCRYPT 2002 Third International Conference on Cryptology in India Hyderabad, India, December 16-18, 2002

The third successful completion of the INDOCRYPT conference series marks the acceptance of the series by the international research community as a forum for presenting high-quality research.It also marks the coming of age of cryptology research in India. The authors for the submitted papers were spread across 21 countries and 4 continents, which goes a long way to demonstrate the international interest and visibility of INDOCRYPT.In the previous two conferences, the submissions from India originated from only two institutes; this increased to six for the 2002 conference.Thus INDOCRYPT is well set on the path to achieving two main ob jectives – to provide an international platform for presenting high-quality research and to stimulate cryptology research in India. The opportunity to serve as a program co-chair for the third INDOCRYPT carries a special satisfaction for the second editor.Way back in 1998, the sci- ti?c analysis group of DRDO organized a National Seminar on Cryptology and abbreviated it as NSCR.On attending the seminar, the second editor suggested that the conference name be changed to INDOCRYPT.It is nice to see that this suggestion was taken up, giving us the annual INDOCRYPT conference - ries.Of course, the form, character, and execution of the conference series was the combined e?ort of the entire Indian cryptographic community under the dynamic leadership of Bimal Roy.

Invited Talks.- Security of a Wide Trail Design.- Fast Algorithms for Determining the Linear Complexity of Period Sequences.- Symmetric Ciphers.- A New Class of Stream Ciphers Combining LFSR and FCSR Architectures.- Slide Attack on Spectr-H64.- On Differential Properties of Pseudo-Hadamard Transform and Related Mappings (Extended Abstract).- New Public-Key Schemes.- A Variant of NTRU with Non-invertible Polynomials.- Tree Replacement and Public Key Cryptosystem.- Foundations.- Never Trust Victor: An Alternative Resettable Zero-Knowledge Proof System.- Asynchronous Unconditionally Secure Computation: An Efficiency Improvement.- Public-Key Infrastructures.- QPKI: A QoS-Based Architecture for Public-Key Infrastructure (PKI).- Towards Logically and Physically Secure Public-Key Infrastructures.- Fingerprinting and Watermarking.- Cryptanalysis of Optimal Differential Energy Watermarking (DEW) and a Modi.ed Robust Scheme.- A 2-Secure Code with Efficient Tracing Algorithm.- Reed Solomon Codes for Digital Fingerprinting.- Public-Key Protocols.- A Note on the Malleability of the El Gamal Cryptosystem.- Authentication of Concast Communication.- Self-certified Signatures.- Identity Based Authenticated Group Key Agreement Protocol.- Boolean Functions.- Construction of Cryptographically Important Boolean Functions.- Evolving Boolean Functions Satisfying Multiple Criteria.- Further Results Related to Generalized Nonlinearity.- Efficient and Secure Implementations.- Modular Multiplication in GF(pk) Using Lagrange Representation.- Speeding up the Scalar Multiplication in the Jacobians of Hyperelliptic Curves Using Frobenius Map.- Improved Elliptic Curve Multiplication Methods Resistant against Side Channel Attacks.- Applications.- The Design and Implementation of Improved Secure CookiesBased on Certificate.- A Certified E-mail System with Receiver’s Selective Usage of Delivery Authority.- Spending Offline Divisible Coins with Combining Capability.- Efficient Object-Based Stream Authentication.- Anonymity.- The Security of a Mix-Center Based on a Semantically Secure Cryptosystem.- New Identity Escrow Scheme for Anonymity Authentication.- Secret Sharing and Oblivious Transfer.- On Unconditionally Secure Distributed Oblivious Transfer.- Non-perfect Secret Sharing over General Access Structures.- On Distributed Key Distribution Centers and Unconditionally Secure Proactive Verifiable Secret Sharing Schemes Based on General Access Structure.