Kaisa Nyberg Advances in Cryptology - EUROCRYPT '98, International Conference on the Theory and Application of Cryptographic Techniques, Espoo, Finland, May 31 - June 4, 1998, Proceeding EUROCRYPT Lecture Notes in Computer Science 1403 Springer 1998 3-540-64518-7 db/conf/eurocrypt/eurocrypt98.html