Method and system for creating random cryptographic keys in...

Cryptography – Communication system using cryptography – Pseudo-random sequence scrambling

Reexamination Certificate

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C380S277000, C713S181000, C713S189000

Reexamination Certificate

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07813507

ABSTRACT:
A method and system for creating random cryptographic keys in hardware is described. One or more bits are generated via one or more random bit circuits. Each random bit circuit includes a sensing device coupled to a first device and a second device to compare the first device against the second device and to generate a random bit from a random state value. The generated bits from the random bit circuits are read, and a cryptographic key may then be computed based on the generated bits.

REFERENCES:
patent: 5222142 (1993-06-01), Kent
patent: 5251165 (1993-10-01), James, III
patent: 5515307 (1996-05-01), Aiello et al.
patent: 5671183 (1997-09-01), Soenen et al.
patent: 6161213 (2000-12-01), Lofstrom
patent: 6185546 (2001-02-01), Davis
patent: 6738788 (2004-05-01), Horng et al.
patent: 6802447 (2004-10-01), Horng
patent: 6888944 (2005-05-01), Lotspiech et al.
patent: 7097107 (2006-08-01), Guthery
patent: 7370190 (2008-05-01), Calhoon et al.
patent: 7444476 (2008-10-01), Gnanasabapathy et al.
patent: 2003/0204743 (2003-10-01), Devadas et al.
patent: 2006/0210082 (2006-09-01), Devadas et al.
Lee, et al., A Technique to Build a Secret Key in Integrated Circuits for Identification and Authentication Applications, 2004, IEEE, Symposium on Vlsi Circuits Digest of Technical Papers, pp. 176-179.
Lofstrom et al., IC Identification Circuit using Device Mismatch, 2000, IEEE, International Solid-State Circuits Conference, 2 pages.
Gassend, et al., Controlled Physical Random Functions, 2002, IEEE, Proceedings of the 18th Annual Computer Security Applications Conference (ACSAC '02), 12 pages.
Gassend et al., “Delay-Based Circuity Authentication with Application to Key Cards”, Jun. 29, 2002, Laboratory for Computer Science, MIT, pp. 1-13.
Gassend, “Physical Random Functions”, Feb. 2003, Masters Thesis, MIT, pp. 1-89.
Ranasinghe et al., “Security and privacy: Modest Proposals for Low-Cost RFID Systems”, 2004, AutoID Labs Research Workshop, Zurich, Switzerland, pp. 1-7.

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