Electronic digital logic circuitry – Security
Reexamination Certificate
2011-03-01
2011-03-01
Cho, James (Department: 2819)
Electronic digital logic circuitry
Security
C326S047000
Reexamination Certificate
active
07898283
ABSTRACT:
Embodiments generally describe techniques for an integrated circuit having a physical unclonable function (PUF). Example integrated circuits may include an input circuit having an input network, a configurable delay circuit having one or more configurable delay chains, and an output circuit having one or more arbiters, serially coupled together. Each delay chain may include a number of serially coupled configurable switching-delay elements adapted to receive, configurably propagate, and output two delayed signals. Each delay chain may be configured using configuration signals responsively output by the input network in response to challenges provided to the input network. The output circuit may further include an output network to generate combined output signals based on the signals output by the arbiters. Each of the input and/or output networks may comprise combinatorial logic, sequential logic, or another PUF, which may be of the same design. Other embodiments may be disclosed and claimed.
REFERENCES:
patent: 7242217 (2007-07-01), van Wageningen et al.
patent: 7681103 (2010-03-01), Devadas et al.
patent: 2009/0083833 (2009-03-01), Ziola et al.
Majzoobi, M. et al., “Techniques for Design and Implementation of Secure Reconfigurable PUFs,” ACM Transactions on Reconfigurable Technology and Systems (TRETS), Mar. 2009, 33 pages, vol. 2, No. 1.
Majzoobi, M. et al., “Lightweight Secure PUFs,” IEEE/ACM International Conference on Computer-Aided Design, (ICCAD 2008), Nov. 2008, pp. 670-673.
Bolotnyy, L. et al., “Physically Unclonable Function-Based Security and Privacy in RFID Systems,” Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom '07), Mar. 2007, pp. 211-220.
Gassend, B. et al., “Controlled Physical Random Functions,” 18th Annual Computer Security Applications Conference, Dec. 2002, pp. 149-160.
Gassend, B. et al., “Silicon Physical Random Functions,” Proceedings of the Computer and Communication Security Conference, Nov. 2002, pp. 148-160.
Gassend, B. et al., “Delay-based Circuit Authentication and Applications,” The Eighteenth Annual ACM Symposium on Applied Computing, Mar. 2003, pp. 294-301.
Gassend, B. et al., “Identification and Authentication of Integrated Circuits,” Concurrency and Computation: Practice and Experience, Aug. 2004, pp. 1077-1098.
Guajardo, J. et al., “FPGA Intrinsic PUFs and their Use for IP Protection,” Cryptographic Hardware and Embedded Systems (CHES 2007), Aug. 2007, pp. 63-80.
Lee, J. W. et al., “A Technique to Build a Secret Key in Integrated Circuits for Identification and Authentication Applications,” Proceedings of the Symposium on VLSI Circuits, Jun. 2004, pp. 176-179.
Alkabani, Y. et al., “Remote activation of ICs for piracy prevention and digital right management,” Proceedings of the 2007 IEEE/ACM international conference on Computer-aided design, Nov. 2007, pp. 674-677.
Feldhofer, M. et al., “A Case Against Currently Used Hash Functions in RFID Protocols,” On the Move to Meaningful Internet Systems 2006: OTM 2006 Workshops, Oct. 2006, pp. 372-381.
Majzoobi, M. et al., “Lightweight Secure PUFs,” Abstract of Rice University Technical Report, 2008.
Majzoobi, M. et al., “Testing Techniques for Hardware Security,” IEEE International Test Conference 2008, Oct. 2008, 10 pages.
Sedcole, P. et al., “Within-die Delay Variability in 90nm FPGAs and Beyond,” IEEE International Conference on Field Programmable Technology 2006, Dec. 2006, pp. 97-104.
Suh, G. et al., “Physical Unclonable Functions for Device Authentication and Secret Key Generation,” Proceedings of the 44th annual Design Automation Conference, Jun. 2007, pp. 9-14.
Trimberger, S., “Trusted Design in FPGAs,” Proceedings of the 44th annual Design Automation Conference, Jun. 2007, pp. 5-8.
Koushanfar Farinaz
Potkonjak Miodrag
Cho James
Schwabe Williamson & Wyatt P.C.
LandOfFree
Lightweight secure physically unclonable functions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lightweight secure physically unclonable functions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lightweight secure physically unclonable functions will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2774844