Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1996-08-23
1999-02-09
Gregory, Bernarr E.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 9, 380 23, 380 25, 380 30, 380 46, 380 49, 705 35, 705 39, H04L 900
Patent
active
058704760
ABSTRACT:
The process comprises a "pledging" step in which a debtor party transmits to a creditor party a data item which is the image of a pledged data item, and a "commencement" step in which the debtor party transmits the plain pledged data item to the creditor party who can verify pledge consistency. In the pledging step, the debtor party produces a seed applied to a pseudo-random generator to produce a pseudo-random word, combines this pseudo-random word in a one-to-one and reversible manner with the pledged data item to produce a checkword, and transmits the checkword to the creditor party. In the commencement step, the debtor party transmits to the creditor party the seed together with the plain pledged data item. The creditor party then applies the seed to a pseudo-random generator similar to that of the debtor party to produce another pseudo-random word, combines in the same one-to-one and reversible manner as for the debtor party, this other pseudo-random word with the checkword, to produce a check data item, and checks the consistency of the check data item with the plain pledged data item received from the debtor party.
REFERENCES:
patent: 4774664 (1988-09-01), Campbell et al.
IBM Technical Disclosure Bulletin, vol. 23, No. 78, Dec. 1980 New York, USA pp. 3325-3327 XP002004302 Anonymous: Packetprint for Electronic Signature or Message Authentication,.
Globecom Tokyo '87, IEEE/IECE Global Telecommunications Conf. 1987. Conf. Record (Cat. #87CH2520-5), Tokyo, Japan, 15-18 Nov. 1987, 1987 New York, NY USA, pp. 1439-1443 vol. 3, Tokura, N et al. "A broadband subscriber network usign optical bar star couplers".
Advances in Cryptology- Crypto '93, 13TH Annual Int'l Cryptology Conf. Proceedings, 1993 Santa Barbara, CA Aug. 22-26, 1993, ISBN 3-540-57766-1, 1984, Berlin, Germany, Springer-Verlag, Germany pp. 40-48 Taylor, R. "An integrity check value algorithm for stream ciphers".
Gregory Bernarr E.
Thomson Multimedia S.A.
Tripoli Joseph S.
Wein Frederick A.
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