Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1994-03-01
1995-05-02
Gregory, Bernarr E.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 4, 380 23, 380 25, 380 49, 380 50, H04L 908, H04L 900
Patent
active
054127238
ABSTRACT:
A method is provided which allows a set of servers to maintain a set of keys, shared with a client, in the presence of mobile eavesdroppers that occasionally break into servers and learn the entire contents of their memories. Static and dynamic schemes maintain secret keys common to the user and each of several servers in the presence of a mobile, transient adversary that occasionally breaks into servers in order to gather information on the users' secret keys. The schemes use periodic "refreshments" of every user's private keys. In each round the servers involve in a computation in which each server computes a new private key to be shared with the user, in a way that allows the user to keep track of the changing keys without any communication with the servers. The schemes are very efficient. In particular, a user has to interact only with one server in order to obtain a session key. The user may choose the server with whom it wants to interact. The method may be used to securely generate random numbers (i.e., using the keys as random numbers).
REFERENCES:
patent: 4182933 (1980-01-01), Rosenblum
patent: 4876716 (1989-10-01), Okamoto
patent: 4972472 (1990-11-01), Brown et al.
patent: 5081677 (1992-01-01), Green et al.
patent: 5146498 (1992-09-01), Smith
patent: 5177791 (1993-01-01), Yeh et al.
patent: 5208859 (1993-05-01), Bartucci et al.
patent: 5325432 (1994-06-01), Gardeck et al.
M. Bellare et al.; "Entity Authentication and Key Distribution"; Advances in Cryptology: Proc. of Crypto 93, Aug. 1993.
Canetti Ran
Herzberg Amir
Gregory Bernarr E.
International Business Machines - Corporation
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