Electronic device for secure authentication of objects such...

Details Electronic device for secure authentication of objects such... Electronic device for secure authentication of objects such...

2006-08-15

2006-08-15

Vaughn, Jr., William C (Department: 2143)

Electrical computers and digital processing systems: multicomput

Computer-to-computer session/connection establishing

Network resources access controlling

C713S168000

Reexamination Certificate

active

07093021

ABSTRACT:
An object is authenticated by transmitting a random number to the object. The object has an integrated circuit chip including a memory and encryption circuitry. The memory stores information defining an encryption scheme preassigned to the object. The encryption circuitry reads the memory, and encrypts the random number according to the encryption scheme defined by the information read from the memory to produce encrypted data. The memory cannot be read from any output of the integrated chip, and the chip is constructed so that it is virtually impossible to recover the information contained in the memory by visual inspection, probing, or disassembly of the chip. The object is authenticated by checking whether the encrypted data is a correct result of encrypting the data using the encryption scheme pressigned to the object.

REFERENCES:
patent: 4465901 (1984-08-01), Best
patent: 5007083 (1991-04-01), Constant
patent: 5671394 (1997-09-01), Katsuta
patent: 5699308 (1997-12-01), Wada et al.
patent: 5881155 (1999-03-01), Rigal
patent: 5925133 (1999-07-01), Buxton et al.
patent: 5998858 (1999-12-01), Little et al.
patent: 6088800 (2000-07-01), Jones et al.
patent: 6319740 (2001-11-01), Heffner et al.
patent: 6327654 (2001-12-01), Oowaki et al.
“Handbook of Applied Cryptography”, by Menezes Alfred J.

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