Secure computer system

Details Secure computer system Secure computer system

2007-11-27

2007-11-27

Zia, Syed A. (Department: 2131)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

Having separate add-on board

C713S189000, C713S190000, C246S18200B, C303S128000, C726S034000, C701S029000

Reexamination Certificate

active

09822820

ABSTRACT:
The secure computer system comprises at least one computer having a processor operating under the control of a program on input data that can be associated with a code and delivering output data for output members. A security peripheral that is external but connected to the processor is provided to receive at least the input data codes, the operands, and the nature of the operation of each elementary operation performed by the processor, a code being calculated on each elementary operation performed by the processor in order to verify proper performance of all or part of the executed program. The system is applicable to processes for automatically running rail track systems.

REFERENCES:
patent: 4400792 (1983-08-01), Strelow
patent: 4831521 (1989-05-01), Rutherford
patent: 5048064 (1991-09-01), Rutherford
patent: 5586034 (1996-12-01), Takaba et al.
patent: 5794167 (1998-08-01), Gruere et al.
patent: 5928362 (1999-07-01), Cardillo et al.
patent: 6009554 (1999-12-01), Balliet
patent: 6088802 (2000-07-01), Bialick et al.
patent: 6092202 (2000-07-01), Veil et al.
patent: 6115831 (2000-09-01), Hanf et al.
patent: 6138239 (2000-10-01), Veil
patent: 6199167 (2001-03-01), Heinrich et al.
patent: 6470284 (2002-10-01), Oh et al.
patent: 6862651 (2005-03-01), Beckert et al.
patent: 0621521 (1994-10-01), None
patent: 2169114 (1986-07-01), None
“Offline Residue Checking for a Floating-Point Arithmetic Unit Executingoverlapped Operations” IBM Technical Disclosure Bulletin, U.S., IBM Corp. New York, vol. 30, No. 6, Nov. 1, 1987, pp. 391-392, XP000023332—ISSN: 0018-8689—Whole document.
Mahmood A. et al.: “Concurrent Error Detection Using Watchdog Processors—A Survey” IEEE Transactions on Computers, U.S., IEEE Inc. New York, vol. 37, No. 2, Feb. 1, 1988, pp. 160-174, XP000648398—ISSN: 0018-9340—p. 160, left column, line 34—right column, line 22.

Affiliated with

Also associated with

Rating

Secure computer system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Secure computer system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Secure computer system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3862341