Researchers and practitioners of cryptography and information security are constantly challenged to respond to new attacks and threats to information systems. Authentication Codes and Combinatorial Designs presents new findings and original work on perfect authentication codes characterized in terms of combinatorial designs, namely strong partially

Introduction. Authentication Schemes. Authentication Schemes with Three Participants. Authentication Schemes with Arbitration. A-Codes Based on Rational Normal Curves. t-Deisgns. Orthogonal Arrays of Index Unity. A-Codes from Finite Geometries. Authentication/Secrecy Schemes. Appendix A: A Survey of Constructions for A-Codes. References. Notations. Index.