Eurocrypt is a series of open workshops on the theory andapplication of cryptographic techniques. These meetings havetaken place in Europe every year since 1982 and aresponsored by the International Association for CryptologicResearch.Eurocrypt '93 was held in the village of Lofthus in Norwayin May 1993. The call for papers resulted in 117 submissionswith authors representing 27 different countries. The 36accepted papers were selected by the program committee aftera blind refereeing process. The papers are grouped intoparts on authentication, public key, block ciphers, secretsharing, stream ciphers, digital signatures, protocols, hashfunctions, payment systems, and cryptanalysis. The volumeincludes 6 further rump session papers.