Display unit storing and using a cryptography key

Details Display unit storing and using a cryptography key Display unit storing and using a cryptography key

2005-01-18

2005-01-18

Sheikh, Ayaz (Department: 2131)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

C713S152000, C713S193000, C380S201000

Reexamination Certificate

active

06845450

ABSTRACT:
Keys (e.g., decryption key, authentication key) are stored in a non-volatile memory of a display unit. The keys are retrieved in encrypted form into an integrated circuit. The integrated circuit decrypts the keys and uses the keys. As the keys are available in decrypted form only within the integrated circuit and potentially only during use, the keys may not be available to unauthorized third parties.

REFERENCES:
patent: 5237610 (1993-08-01), Gammie et al.
patent: 6014745 (2000-01-01), Ashe
patent: 6061451 (2000-05-01), Muratani et al.
patent: 6085323 (2000-07-01), Shimizu et al.
patent: 6313813 (2001-11-01), Narui et al.
patent: 6584552 (2003-06-01), Nishimura et al.
Philips Semiconductors, the 12c-BUS Specification, Jan. 2000, Version 2.1, p. 4.*
Digital Display Working Group High-Bandwidth Digital Content Protection System, Revision 1.0, Feb. 17, 2000.

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