Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1994-09-28
1996-03-05
Bowler, Alyssa H.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 21, 380 25, 380 28, 380 30, H04K 100
Patent
active
054974216
ABSTRACT:
Apparatus for protecting the confidentiality of a user's password during a remote login authentication exchange between a user node and a directory service node of a distributed, public key cryptography system includes a specialized server application functioning as an intermediary agent for the login procedure. The login agent has responsibility for approving the user's login attempt and distributing a private key to the user. However, the login agent is not trusted with the user's password and is therefore a "semi-trusted" node. In another aspect of the invention, a login protocol enables remote authentication of the user password without transmitting the password over the network.
REFERENCES:
patent: 4399323 (1983-08-01), Henry
patent: 4881264 (1989-11-01), Merkle
patent: 4885777 (1989-12-01), Takaragi et al.
patent: 4924515 (1990-05-01), Matyas et al.
patent: 4932056 (1990-06-01), Shamir
patent: 4993068 (1991-02-01), Piosenka et al.
patent: 5018196 (1991-05-01), Takaragi et al.
patent: 5032987 (1991-07-01), Broder et al.
patent: 5121494 (1992-06-01), Dias et al.
patent: 5201000 (1993-04-01), Matyas et al.
patent: 5297206 (1994-03-01), Orton
patent: 5315658 (1994-05-01), Micali
patent: 5365589 (1994-11-01), Gutowitz
Article entitled, "SPX: Global Authentication Using Public Key Certificates" by J. J. Tardo et al. from Proceeding of IEEE Symp. Research in Security and Privacy, IEEE CS Press, 1991, at pp. 232-244.
Article entitled, "Authentication for Distributed Systems" by T. Y. C. Woo et al., University of Texas at Austin, from Computer, IEEE Computer Society, Jan. 1992, at pp. 49-51.
Article entitled, "Reducing the Risks from Poorly Chosen Keys" by T. Mark et al., University of Cambridge Computer Laboratory Cambridge, England, from 12th Symposium on Operating System Principles 1989 at pp. 14-18.
Alagappan Kannan
Gasser Morrie
Kaufman Charles W.
Lampson Butler W.
Tardo Joseph J.
Bowler Alyssa H.
Digital Equipment Corporation
Follansbee John
LandOfFree
Method and apparatus for protecting the confidentiality of passw 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 and apparatus for protecting the confidentiality of passw, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for protecting the confidentiality of passw will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1417608