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# ACMD Seminar: Securing Physically Unclonable Functions

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Sandip Kundu*Department of Electrical & Computer Engineering, University of Massachusetts Amherst*

Thursday, December 13, 3:00-4:00	Building 101, Portrait Room	Gaithersburg

Thursday, December 13, 1:00-2:00	Building 1, Room 4072	Boulder

**Host:**Raghu Kacker

**Abstract:**Proliferation of mobile computing hardware and emergence of Internet-of-Things have created a need for low-cost solutions for cryptographic functions such as authentication, encryption and digital signatures. Current best practices involve storing a secret key in a nonvolatile memory or battery backed SRAM which are vulnerable to invasive attacks. Physically Unclonable Functions (PUF) have been touted as an alternative for authentication and low-cost key generation. Due to the nature of applications, a PUF may operate in an untrusted environment where an adversary has the capability to eavesdrop on communications or even have physical possession of the PUF with the ability to apply any input and observe outputs. Securing PUF in this environment is challenging. While the actual threat model varies from application to application, there are some common security challenges for a PUF. In this talk, we will describe two such challenges: (i) ensuring uniqueness (ii) and thwarting modeling attacks. We will then present novel solutions to address those problems. Finally, we will conclude this talk with some open challenges.

**Bio:**Sandip Kundu is a Program Director of the Secure and Trusted Computing Program at NSF on leave from the University of Massachusetts at Amherst where he is a Professor. He obtained his PhD in 1988 and then spent 17 years in industry before joining academia. First he joined the IBM Research Division as a Research Staff Member and then Intel Corporation as a Principal Engineer. He has published nearly 250 research papers in VLSI design and test, holds several key patents including ultra-drowsy sleep mode in processors, and has given more than a dozen tutorials at various conferences. He is a Fellow of the IEEE, Fellow of the Japan Society for Promotion of Science (JSPS), Senior International Scientist of the Chinese Academy of Sciences and was a Distinguished Visitor of the IEEE Computer Society. He is currently an Associate Editor of the IEEE Transactions on Dependable and Secure Computing. Previously, he has served as an Associate Editor of the IEEE Transactions on Computers, IEEE Transactions on VLSI Systems and ACM Transactions on Design Automation of Electronic Systems. He has been Technical Program Chair/General Chair of multiple conferences including ICCD, ATS, ISVLSI, DFTS and VLSI Design Conference.

**Note:** Visitors from outside NIST must contact Cathy Graham; (301) 975-3800; at least 24 hours in advance.

CybersecurityInternet of Things (IoT)Mathematics and statistics

## Contacts

                -  Raghu N Kacker  raghu.kacker@nist.gov      (301) 975-2109   
                -  Stephen Langer  stephen.langer@nist.gov      (301) 975-5423   

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