Coding Theory Cryptography and Related Areas : Proceedings of an International Conference on Coding Theory Cryptography and Related Areas held in Guanajuato Mexico in April 1998 This book contains 23 contributions presented at the International Conference on Coding Theory Cryptography and Related Areas (ICCC) held in Guanajuato Mexico in April 1998. It comprises a series of research papers on various aspects of coding theory (geometric algebraic decoding exponential sums etc.) and cryptography (discrete logarithm problem public key cryptosystems primitives etc.) as well as in other research areas such as codes over finite rings and some aspects of function fields and algebraic geometry over finite fields. The book contains new results on the subject never published in any other form. It will be useful to students researchers professionals and tutors interested in this area of research