Trust controller for detecting unauthorized logic in a...

Details Trust controller for detecting unauthorized logic in a... Trust controller for detecting unauthorized logic in a...

2007-07-31

2010-02-02

Tan, Vibol (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

C326S037000, C326S039000, C326S041000, C326S021000

Reexamination Certificate

active

07656189

ABSTRACT:
Various approaches for detection of an unwanted function implemented in an integrated circuit (IC) are described. A controller is implemented on the IC, and at a first time while the IC is operating according to a circuit design, the controller reads a first data set from a subset of memory cells. The subset of memory cells stores state information of the circuit design. The controller determines whether the first data set is different from a second data set. In response to the first data set being different from the second data set, the controller outputs a threat signal that indicates the presence of unauthorized logic in the circuit design.

REFERENCES:
patent: 2005/0040844 (2005-02-01), Plants
patent: 2005/0283566 (2005-12-01), Callaghan
XAPP714 (v1.0) Application Note: Virtex-4 Family, Jones,Les, entitled “Single Event Upset (SEU) Detection and Correction”, Mar. 25, 2005, Xilinx, Inc. 2100 Logic Drive, San Jose, CA 95124.
Peterson, W. W. and Brown, D. T. (Jan. 1961). “Cyclic Codes for Error Detection”. Proceedings of the IRE vol. 49, Issue 1, Jan. 1961 pp. 228-235.

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