Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1994-01-27
1996-04-16
Buczinski, Stephen C.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 21, 380 25, H04L 902, H04K 100
Patent
active
055090745
ABSTRACT:
A method for protecting electronically published documents involves operating a computer system and network for electronic publication of documents, and includes the steps of receiving requests for documents from users having computers with display devices or printers, including with the requests unique user identification for each of the user; authenticating the requests with a copyright server; using the copyright server to direct a document server to act upon proper authentication of each request; using the document server to create uniquely encoded, compressed and encrypted documents for each authenticated request, where the documents have unique encoding corresponding to each of the users, and forwarding the documents to each authenticated request user through the network to corresponding agents of each authenticated request user, with each of the agents being selected from display agents and printer agents; and decrypting and uncompressing the documents at each of the agents and making the documents available for use only in response to receiving correct secret keys provided by the authenticated request user to the agents.
REFERENCES:
patent: 4393269 (1983-07-01), Konheim et al.
patent: 4995082 (1991-02-01), Schnorr
patent: 5077795 (1991-12-01), Rourke et al.
patent: 5144665 (1992-09-01), Takaragi et al.
patent: 5235642 (1993-08-01), Wobber et al.
L. Harn et al., "A Software Authentication System for Information Integrity", Computers & Security, vol. 11, 1992, pp. 747-752.
R. Laun, "Asymmetric User Authentication", Computers & Security, vol. 11, 1992, pp. 173-183.
B. Struif, "The Use of Chipcards for Electronic Signatures and Encryption", Proceedings Of The VLSI and Computer Peripherals Conference, Hamburg, Germany, May 12, 1989, pp. 4.155-4.158.
M. M. Thiemer et al., "Delegation Through Access Control Programs", 12th International Conference On Distributed System, Yokohama, Japan, Jun. 12, 1992, pp. 529-536.
European Search Report for Application No. EP 95300287.
Choudhury Abhijit K.
Maxemchuk Nicholas F.
Paul Sanjoy
Schulzrinne Henning G.
AT&T Corp.
Brendzel H. T.
Buczinski Stephen C.
Weiss E.
LandOfFree
Method of protecting electronically published materials using cr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of protecting electronically published materials using cr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of protecting electronically published materials using cr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-331610