Authentication system, authentication device, authentication...

Details Authentication system, authentication device, authentication... Authentication system, authentication device, authentication...

2005-01-11

2005-01-11

Morse, Gregory (Department: 2134)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S169000

Reexamination Certificate

active

06842859

ABSTRACT:
Upon receiving an encipherment command, an enciphered authentication data generation circuit generates an enciphered authentication data based on a basic authentication data including a random number portion using an encipherment rule. The encipherment rule changes according to the number of supplied encipherment commands. A transmission circuit7transmits the enciphered authentication data. A reception circuit9receives the enciphered authentication data transmitted from a second device300.A prohibition command output circuit11determines whether the enciphered authentication data transmitted from the second device300matches with an enciphered authentication data that would be generated if the same number of encipherment commands were supplied to an enciphered authentication data generation circuit of a first device200,and outputs a prohibition command to prohibit a transmission of the data to be transmitted when the determination result is negative.

REFERENCES:
patent: 4310720 (1982-01-01), Check, Jr.
patent: 4532416 (1985-07-01), Berstein
patent: 4799258 (1989-01-01), Davies
patent: 4933971 (1990-06-01), Bestock et al.
patent: 5060263 (1991-10-01), Bosen et al.
patent: 5109152 (1992-04-01), Takagi et al.
patent: 5325434 (1994-06-01), Spaanderman et al.
patent: 5915226 (1999-06-01), Martineau
patent: 0 266 944 (1988-05-01), None
patent: 0 538 946 (1993-04-01), None
patent: 60-220636 (1985-11-01), None
patent: 62-118472 (1987-05-01), None
patent: 63-301664 (1998-12-01), None
patent: WO 9202087 (1992-02-01), None
“Modern Cyptography Theory,” 3rd Edition, IEICE, May 20, 1989, Ikeno et al. Partial Translation.

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