Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1992/04/25 Vol. E75-ANo. 4 ;
pp. 498-503 Type of Manuscript: Special Section PAPER (Special Issue on Discrete Mathematics and Its Application) Category: Keyword: cryptosystem, group, closure test, meet-in-the-middle technique, DES cipher, RSA scheme, birth-day paradox,