Cryptography – Key management – Having particular key generator
Patent
1996-02-22
1997-03-25
Buczinski, Stephen C.
Cryptography
Key management
Having particular key generator
3642273, 3649189, 380 24, 395207, H04L 900, H04K 100, G06F 1760
Patent
active
056152698
ABSTRACT:
There is described an electronic communications method between a first party and a second party, with assistance from at least a plurality of trustees, enabling an electronic transaction in which the first party having a selling reservation price (SRP) and the second party having a buying reservation price (BRP) may be committed to a transaction if a predetermined relationship between SRP and BRP is established, but not otherwise. The method begins by having each of the parties transmit shares of their respective reserve prices to the trustees. These shares are such that less than a given number of them does not provide enough useful information for reconstructing the reserve prices while a sufficiently high number of them allows such reconstruction. The trustees then take some action to determine whether the predetermined relationship exists without reconstructing SRP and BRP. If the predetermined relationship exists, then the trustees provide information that allows a determination of the sale price according to a given formula. Otherwise, the trustees determine that no deal is possible. As used herein, "sale" is merely respresentative as the transaction may be of any type including, without limitation, a sale, lease, license, financing transaction, or other known or hereinafter created financial commercial or legal instrument.
REFERENCES:
patent: 5224162 (1993-06-01), Okamoto et al.
patent: 5276737 (1994-01-01), Silvio
patent: 5315658 (1994-05-01), Silvio
patent: 5373558 (1994-12-01), Chaum
patent: 5511121 (1996-04-01), Yacobi
patent: 5521980 (1996-05-01), Brands
B. Schneier; Applied Cryptography, Second Edition; 22 May 1995; John Wiley & Sons, Inc.
Goldwasser, Shafi, Silvio Micali and Charles Rackoff, "The Knowledge Complexity of Interactive Proof Systems" Siam J. Comput. vol. 18, No. 1, pp. 186-208, Feb. 1989, Society for Industrial and Applied Mathematics.
Goldreich, Oded, Silvio Micali and Avi Wigderson, "Proofs that Yield Nothing But Their Validity or All Languages in NP Have Zero-Knowledge Proof Systems Journal of the Association for Computing Machinery", vol. 39, No. 1, Jul. 1991, pp. 691-729.
Goldreich, Oded, Silvio Micali and Avi Wigderson, "How to Play Any Mental Game or A Completeness Theorem for Protocols with Honest Majority" (Extended Abstract) 1987, pp. 218-229.
Yao, Andrew C., "Protocols for Secure Computations" (Extended Abstract) 1982, University of California, Berkeley, Ca., pp. 160-169.
Micali, Silvio and Philip Rogaway, "Secure Computation" (Abstract) Undated.
Ben-Or, Michael, Shafi Goldwasser and Avi Wigderson, "Completeness Theorems for Non-Cryptographic Fault-Tolerant Distributed Computation" (Extended Abstract) ACM, 1988, pp. 1-10.
Chaum, David, Claude Crepeau and Ivan Damgdrd, "Multiparty Unconditionally Secure Protocols" (Extended Abstract) ACM, 1988, pp. 11-19.
Dolev, Danny, Cynthia Dwork and Moni Naor, "Non-Malleable Cryptography" (Extended Abstract) ACM, 1991, pp. 542-552.
Buczinski Stephen C.
Judson David H.
LandOfFree
Ideal electronic negotiations does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ideal electronic negotiations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ideal electronic negotiations will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2210702