Journal Designs, Codes and Cryptography Issue 2/2003 Table of Contents ( 7 Articles ) 01-03-2003 | Issue 2/2003 An Efficient Protocol for Authenticated Key Agreement Laurie Law, Alfred Menezes, Minghua Qu, Jerry Solinas, Scott Vanstone 01-03-2003 | Issue 2/2003 Linear Complexity of the Discrete Logarithm Sergei Konyagin, Tanja Lange, Igor Shparlinski 01-03-2003 | Issue 2/2003 Quasi-Symmetric Designs with Good Blocks and Intersection Number One V. C. Mavron, T. P. McDonough, M. S. Shrikhande 01-03-2003 | Issue 2/2003 Extremal Self-Dual [50, 25, 10] Codes with Automorphisms of Order 3 and Quasi-Symmetric 2-(49, 9,6) Designs Stefka Bouyuklieva, Masaaki Harada 01-03-2003 | Issue 2/2003 Extremal Self-Dual Codes over 2 × 2 Koichi Betsumiya, T. Aaron Gulliver, Masaaki Harada 01-03-2003 | Issue 2/2003 On the Security of Digital Signature Schemes Based on Error-Correcting Codes Sheng-bo Xu, Jeroen Doumen, Henk van Tilborg 01-03-2003 | Issue 2/2003 Improvement of the Delsarte Bound for τ-Designs When It Is Not the Best Bound Possible Svetla Nikova, Ventzislav Nikov