1. S. G. Akl, “On the Security of Compressed Encodings”, Advances in Cryptology-CRYPTO’83, Proceedings, pp. 209–230, Plenum Press, New York, 1984.
2. Lect Notes Comput Sci;L. Brown,1990
3. Data Encryption Standard, FIPS PUB 46, National Tech. Info. Service, Springfield, VA, 1977.
4. Lect Notes Comput Sci;I. B. Damgaard,1990
5. R. W. Davies and W. L. Price, “Digital Signature — an Update”, Proc. International Conference on Computer Communications, Sydney, Oct 1984, Elsevier, North-Holland, pp. 843–847, 1985.