@book{1991-menezes ,title={{Advances in cryptology: CRYPTO '90}} ,booktitle={{Advances in cryptology: CRYPTO '90}} ,editor={Alfred J. Menezes and Scott A. Vanstone} ,ISBN={3--540--54508--5} ,MR={94b:94002} ,publisher={Springer-Verlag} ,address={Berlin} ,series={Lecture Notes in Computer Science} ,volume={537} ,year={1991} }