Device authentication system which allows the authentication fun

Details Device authentication system which allows the authentication fun Device authentication system which allows the authentication fun

Filed on

1997-09-29

Date issued

2000-03-07

Examiner

Zimmerman, Brian

Patent Class

Communications: electrical

SubClass

Continuously variable indicating

SubSubClass

With meter reading

Other Related Categories

3408253, 340505, 340 101, 709229, 713200, 713201, 713202, 380 3, 380 4, 380 25, G06F 1100

Type

Patent

Status

active

Patent number

060346183

Description

ABSTRACT:
The decoder apparatus 90 generates a random number R1 for authenticating the optical disc drive apparatus 70 and sends it to the optical disc drive apparatus 70 as the challenge data CHA1. The optical disc drive apparatus 70 selects one out of the sixteen claimant functions stored in the claimant function unit 722 and calculates the function value fi(CHA1) which it sends to the decoder apparatus 90 as the response data RES1. The decoder apparatus 90 compares the response data RES1 with sixteen function values f1(R1) to f16(R1) that are obtained using the sixteen verification functions stored in the verification function unit 922, and authenticates the optical disc drive apparatus 70 when at least one of the function values matches the response data RES1.

REFERENCES:
patent: 5481611 (1996-01-01), Owens et al.

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