Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1996-12-09
1998-02-10
Gregory, Bernarr E.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 23, 380 30, 380 49, H04L 900, H04L 930
Patent
active
057177589
ABSTRACT:
An intermediary provides certificate information by receiving from a first other entity authenticated certificate information, processing at least a portion of the authenticated certificate information to obtain deduced information, if the deduced information is consistent with the authenticated certificate information, having a witness construct authenticated deduced information by authenticating at least one of: the deduced information, the deduced information together with date information, and the deduced information together with additional information, and by providing the authenticated deduced information. The date information may be at least one of: the current date and date information of the authenticated certificate information. The witness may do the processing. The witness may be the intermediary. The authenticated certificate information and/or the authenticated deduced information may include a digital signature, which may be relative to a verification key that is part of an issued certificate and/or may be computed by applying a one-way function to one or more secret values or by iterating a one-way function. The digital signature may keep the witness accountable for the fact that the authenticated deduced information is consistent with the authenticated certificate information.
REFERENCES:
patent: Re34954 (1995-05-01), Haber et al.
patent: 4943707 (1990-07-01), Boggan
patent: 5136646 (1992-08-01), Haber et al.
patent: 5136647 (1992-08-01), Haber et al.
patent: 5315657 (1994-05-01), Abadi et al.
patent: 5340969 (1994-08-01), Cox
patent: 5396624 (1995-03-01), Campbell, Jr.
patent: 5434919 (1995-07-01), Chaum
patent: 5450493 (1995-09-01), Maher
patent: 5497422 (1996-03-01), Tysen et al.
patent: 5537475 (1996-07-01), Micali
patent: 5606617 (1997-02-01), Brands
patent: 5615268 (1997-03-01), Bisbee et al.
Menezes A. J., Handbook of Applied Cryptography, 1996, pp. 566, 576-577, 588-589, 706, 716, 720, 728-729, 737 and 751.
CygnaCom Solutions, Inc., "Federal Public Key Infrastructure (PKI) Technical Specifications Part D--Interoperability Profiles," Published on the World Wide Web, Sep. 27, 1995, 91 pages.
Nazario, N., "Federal Public Key Infrastructure (PKI) Version 1 Technical Specifications: Part B--Technical Security Policy," Published on the World Wide Web, Mar. 13, 1996, 20 pages.
Polk, W., editor, "Federal Public Key Infrastructure (PKI) Technical Specifications (Version 1) Part A: Requirements," Published on the World Wide Web, Dec. 6, 1996, 18 pages.
Ford, Warwick, "A Public Key Infrastructure for U.S. Government Unclassified but Sensitive Operations," Published on the World Wide Web, Sep. 1, 1995, 93 pages.
Chokhani, Santosh, et al., "Certificate Policy and Certification Practice Statement Framework", Published on the World Wide Web, Nov. 3, 1996.
Burr, William E. et al., "A Proposed Federal PKI Using X.509 V3 Certificates," Published on the World Wide Web.
Burr, W.E., "Public Key Infrastructure (PKI) Technical Specifications (Version 1): Part C--Concept of Operations," Published on the World Wide Web, Feb. 12, 1996, 30 pages.
Ford, Warwick, "Public-Key Infrastructure Standards," Published on the World Wide Web, Oct. 1996, 15 printed pages.
Polk, William T., "Minimum Interoperability Specifications for PKI Components," Published on the World Wide Web, Nov., 1996.
Chokhani, Santosh, "Security Considerations in Using X. 509 Certificates," Published on the World Wide Web.
Dodson, Donna F., "NIST PKI Implementation Projects," Published on the World Wide Web.
Burr, William, "A Proposed Federal PKI Using X. 509 V3 Certificates: The NISSC Presentation," Published on the World Wide Web.
Farrell S., et al., "Internet Public Key Infrastructure Part III: Certificate Management Protocols," Published on the World Wide Web, Dec. 1996, 83 printed pages.
Nazario, Noel et al., "Management Model for the Federal Public Key Infrastructure," Published on the World Wide Web, Oct. 24, 1996.
Nazario, Noel A., "Security Policies for the Federal Public Key Infrastructure," Published on the World Wide Web, Oct. 24, 1996.
Burr, William, et al., "MISPC: Minimum Interoperability Specifications for PKI Components," Published on the World Wide Web, Dec. 2, 1996.
Elgamal, et al., Securing Communications on the Intranet and Over the Internet, Netscape Communications Corporation, Jul. 1996.
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