Cryptography – Cryptanalysis
Patent
1996-05-07
1998-06-09
Cain, David C.
Cryptography
Cryptanalysis
380 25, H04K 100
Patent
active
057647615
ABSTRACT:
In an electronic assembly, a first integrated circuit device (chip) is provided with a lock circuitry that controls operational enablement of a functional block of the chip. To unlock the lock circuitry, a "chip-key" must be supplied to the chip. The chip is also provided with chip-key output circuit for outputting a chip key associated with one or more other chips of the electronic assembly; the chip-key output circuit may be part of the functional block controlled by the lock circuitry of the same chip.
REFERENCES:
patent: 5231668 (1993-07-01), Kravitz
patent: 5293610 (1994-03-01), Schwarz
patent: 5377264 (1994-12-01), Lee et al.
patent: 5379344 (1995-01-01), Larsson et al.
patent: 5428685 (1995-06-01), Kadooka et al.
patent: 5432950 (1995-07-01), Sibigtroth
patent: 5467396 (1995-11-01), Schossow et al.
patent: 5495531 (1996-02-01), Smiedt
patent: 5530749 (1996-06-01), Easter et al.
patent: 5619573 (1997-04-01), Brinkmeyer et al.
Electronics Week, vol. 58, No. 7, Feb. 1985, pp. 68-72, J. S. Kontur et al., "Locking Up System Security".
Mini-Micro Conference Record, 11 Nov. 1983, pp. 1-11, B. Huston, "New ICs Help Prevent Software Theft".
Computer, vol. 25, No. 1, Jan. 1992, pp. 39-52, T. Y. C. Woo et al., "Authentication for Distributed System".
European Search Report, EP 95 41 0048, 8, Nov. 1995.
Cain David C.
Hewlett--Packard Company
LandOfFree
Eletronic assembly with integrated circuit devices including loc does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Eletronic assembly with integrated circuit devices including loc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Eletronic assembly with integrated circuit devices including loc will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2210780