This book constitutes the proceedings of the 1994 Workshop on the Theory and Application of Cryptographic Techniques, EUROCRYPT '94, held in Perugia, Italy in May 1994. The 36 revised full papers presented in the book are selected from 137 submissions and address all current research and advanced applicational aspects of cryptography; in addition, there are 11 short papers originating from the best special presentations accepted for the traditional rump session. The papers are organized in sections on secret sharing, hash functions, signatures, cryptosystems, pseudorandom generators, authentication codes, key agreement and key distribution, protocols, cryptanalysis and block ciphers, and number theory and algorithms.