Method for authentication between two electronic devices

Details Method for authentication between two electronic devices Method for authentication between two electronic devices

1994-05-25

1995-12-05

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 24, 380 25, 380 46, 380 49, 235379, 235380, 34082531, 34082534, H04L 932, H04L 900

Patent

active

054736897

ABSTRACT:
A method for authentication between two electronic devices includes generating at least two random numbers; transmitting the two random numbers, so that both are available in both a first and a second station; encrypting the random numbers in both stations to make one cryptogram belonging to each random number; transmitting part of a first cryptogram from one station to the other station; comparing the cryptogram part in the second station, and discontinuing further output of the cryptogram if there is not a match; transmitting part of a second cryptogram by the second station; and comparing the cryptogram part transmitted by the second station, in the first station, and discontinuing further output of the cryptogram if there is not a match. The steps of transmitting part of the first cryptogram from one station to the other station, comparing the cryptogram part in the second station, and discontinuing further output of the cryptogram if there is not a match, transmitting part of the second cryptogram by the second station, and comparing the cryptogram part transmitted by the second station, in the first station, and discontinuing further output of the cryptogram if there is not a match, are repeated with further parts of the cryptogram until a complete match is found, or until discontinuation has taken place.

REFERENCES:
patent: 3761892 (1973-09-01), Bosnyak et al.
patent: 4465153 (1984-08-01), van de Pas et al.
patent: 4679236 (1987-07-01), Davies
patent: 4799061 (1989-01-01), Abraham et al.
Konigs, H.-P. "Cryptographic Identification Methods for Smart Cards in the Process of Standardization." IEEE Communications Magazine, vol. 29, No. 6. (Jun. 1991), pp. 42-48.
Ferreira, R. C. "The Smart Card: A high security tool in EDP." Philips Telecommunications & Data Systems Review, vol. 47, No. 3 (Sep. 1989), pp. 1-19.

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