Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1996-08-08
1998-11-17
Barron, Jr., Gilberto
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 30, H04L 930
Patent
active
058387927
ABSTRACT:
An article of manufacture for effecting secure communications during a communications session between users in a secured communication cryptosystem in which users are each associated with a public crypto-key and a private crypto-key, includes computer readable storage medium having computer programming stored thereon. The stored computer programming is configured to be readable from the computer readable storage medium by a computer and thereby cause the computer to operate so as to generate a private crypto-key using a private exponent and a modulus N, which is the product of a plurality of numbers within a set of large prime numbers. The generated private crypto-key is divided into a private user key portion having a first bit length and a central authority key portion having a second bit length. The first bit length is smaller than the second bit length, and is no larger than fifteen percent of the bit length of the modulus N but no less than 56 bits. The private user key portion is directed only to a single user of the cryptosystem and the central authority's portion is directed to a central storage device.
REFERENCES:
patent: 4200770 (1980-04-01), Hellman et al.
patent: 4218582 (1980-08-01), Hellman et al.
patent: 4405829 (1983-09-01), Rivest et al.
patent: 4424414 (1984-01-01), Hellman et al.
patent: 4736423 (1988-04-01), Matyas
patent: 4860353 (1989-08-01), Brown
patent: 4888800 (1989-12-01), Marshall et al.
patent: 4926478 (1990-05-01), Gruenberg
patent: 4965827 (1990-10-01), McDonald
patent: 4995082 (1991-02-01), Schnorr
patent: 5016274 (1991-05-01), Micali et al.
patent: 5029208 (1991-07-01), Tanaka
patent: 5052040 (1991-09-01), Preston et al.
patent: 5073935 (1991-12-01), Pastor
patent: 5150411 (1992-09-01), Maurer
patent: 5208853 (1993-05-01), Armbruster et al.
patent: 5241594 (1993-08-01), Kung
patent: 5241597 (1993-08-01), Bright
patent: 5241598 (1993-08-01), Raith
patent: 5251258 (1993-10-01), Tanaka
patent: 5253294 (1993-10-01), Maurer
patent: 5276737 (1994-01-01), Micali
patent: 5297206 (1994-03-01), Orton
patent: 5299263 (1994-03-01), Beller et al.
patent: 5375169 (1994-12-01), Seheidt et al.
Digital Multisignature, C. Boyd, Proceedings of the Inst. of Math, and its Appl. on Cryptography and Coding, 15-17 Dec. 1986.
"A Method of Obtaining Digital Signatures and Public Key Cryptosystems", CACM, vol. 21, pp. 120-126, Feb. 1978, Rivest, Shamir and Adleman.
Bruce Schneier, "Applied Cryptography", Wiley & Sons, 1994, Sections 3.4 and 16.3 and p. 576. Multiple Key Public Key.
M.J. Wiener, "Cryptoanalysis of Short RSA Secret Exponents", IEEE Transaction on Information Theory, vol. 36, No. 3, pp. 553-558.
Barron Jr. Gilberto
Bell Atlantic Network Services Inc.
LandOfFree
Computer system for centralized session key distribution, privac does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Computer system for centralized session key distribution, privac, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer system for centralized session key distribution, privac will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-893050