Novel physical unclonable function with process and environmental variations
Proceedings of the Conference on Design, Automation and Test in Europe
Differential public physically unclonable functions: architecture and applications
Proceedings of the 48th Design Automation Conference
Recyclable PUFs: logically reconfigurable PUFs
CHES'11 Proceedings of the 13th international conference on Cryptographic hardware and embedded systems
Logically reconfigurable PUFs: memory-based secure key storage
Proceedings of the sixth ACM workshop on Scalable trusted computing
Quantum readout of physical unclonable functions
AFRICACRYPT'10 Proceedings of the Third international conference on Cryptology in Africa
An attack on PUF-Based session key exchange and a hardware-based countermeasure: erasable PUFs
FC'11 Proceedings of the 15th international conference on Financial Cryptography and Data Security
OASIS: on achieving a sanctuary for integrity and secrecy on untrusted platforms
Proceedings of the 2013 ACM SIGSAC conference on Computer & communications security
Proceedings of the 3rd international workshop on Trustworthy embedded devices
Counterfeit Integrated Circuits: Detection, Avoidance, and the Challenges Ahead
Journal of Electronic Testing: Theory and Applications
A Comprehensive Framework for Counterfeit Defect Coverage Analysis and Detection Assessment
Journal of Electronic Testing: Theory and Applications
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A PUF or Physical Unclonable Function is a function that is embodied in a physical structure that consists of many random uncontrollable components which originate from process variations during manufacturing. Due to this random structure a physical stimulus or challenge generates unpredictable responses. Because of their physical properties PUFs are unclonable and very promising primitives for the purpose of authentication and storage of cryptographic keys. Previous work on PUFs considers mainly static challenge-response PUFs. In many applications, however, a dynamic PUF would be desirable, e.g., in order to allow the key derived from the PUF to be updated. We define a new primitive, the reconfigurable PUF (rPUF) which is a PUF with a mechanism to transform it into a new PUF with a new unpredictable and uncontrollable challenge-response behavior, even if the challengeresponse behavior of the original PUF is already known. We present two practical instantiations of a reconfigurable PUF. One is a new variant of the optical PUF, and the other is based on phase change memory. We also illustrate how an rPUF can be used to protect non-volatile storage against invasive physical attacks.