Authenticator

Details Authenticator Authenticator

1988-05-18

1990-10-23

Tarcza, Thomas H.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 23, 380 24, 380 29, 380 30, 380 46, 380 36, 380 37, H04L 900

Patent

active

049658271

ABSTRACT:
An authenticator for digital data is derived by generating a numerical array, using a secret key to controllably shift the relative positions of the elements of the array, and applying the scrambled array to a message to create an authenticator for that message. The method allows a high level of security and minimizes the risk of a system, such as an intelligent portable token and reader system, being compromised.

REFERENCES:
patent: 3798359 (1974-03-01), Feistel
patent: 3970790 (1976-07-01), Guanella
patent: 4004089 (1977-01-01), Richard et al.
patent: 4443660 (1984-04-01), DeLong
patent: 4688250 (1987-08-01), Corrington et al.
patent: 4776011 (1988-10-01), Busby

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