Paper 2015/443

Security Evaluation and Enhancement of Bistable Ring PUFs

Xiaolin Xu, Ulrich Rührmair, Daniel E. Holcomb, and Wayne Burleson


The Bistable Ring (BR) Physical Unclonable Function (PUF) is a newly proposed hardware security primitive in the PUF family. In this work, we comprehensively evaluate its resilience against Machine Learning (ML) modeling attacks. Based on the success of ML attacks, we propose XOR strategies to enhance the security of BR PUFs. Our results show that the XOR BR PUF with more than four parallel BR PUFs is able to resist the ML modeling methods in this work. We also evaluate the other PUF metrics of reliability, uniqueness and uniformity, and find that the XOR function is also effective in improving the uniformity of BR PUFs.

Available format(s)
Publication info
Published elsewhere. RFIDsec 2015
implementationAttacksModeling AttacksBistable Ring PUF
Contact author(s)
xiaolinx @ umass edu
2015-05-09: received
Short URL
Creative Commons Attribution


      author = {Xiaolin Xu and Ulrich Rührmair and Daniel E.  Holcomb and Wayne Burleson},
      title = {Security Evaluation and Enhancement of Bistable Ring {PUFs}},
      howpublished = {Cryptology ePrint Archive, Paper 2015/443},
      year = {2015},
      note = {\url{}},
      url = {}
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