Secure sensor chip + PUF

Encrypt the sensor's bits with a key that never has to be stored: the chip re-creates it from its own fingerprint.
nithinpuru.com
Attack lab: which attacks break which designWorkbench: edit the helper data and keys

References

The original design, its threat model and the zero-input and same-key tests follow [1]. The PUF, fuzzy-extractor and NLFSR extension, and the attacks marked “beyond the paper”, are this page's own modelling built on [2]-[9].

  1. A. Yasar, D. Caygara, Y. H. Patel, A. Pemaraj, L. Boisvert, A. Magyar, T. Yu, B. Dufort, T.-L. Poo, and R. T. Yazicigil, “A Secure Multimodal Electrochemical Sensor for Sustainable Biomanufacturing,” in Proc. 2025 IEEE European Solid-State Electronics Research Conference (ESSERC), pp. 413-416, 2025. doi: 10.1109/ESSERC66193.2025.11213984.
  2. R. T. Yazicigil et al., “Beyond Crypto: Physical-Layer Security for Internet of Things Devices,” IEEE Solid-State Circuits Magazine, vol. 12, no. 4, 2020. doi: 10.1109/MSSC.2020.3021842.
  3. A. Yasar and R. T. Yazicigil, “Physical-Layer Security for Energy-Constrained Integrated Systems: Challenges and Design Perspectives,” IEEE Open Journal of the Solid-State Circuits Society, vol. 3, 2023. doi: 10.1109/OJSSCS.2023.3327326.
  4. J. L. Massey, “Shift-register synthesis and BCH decoding,” IEEE Transactions on Information Theory, vol. 15, no. 1, pp. 122-127, 1969. doi: 10.1109/TIT.1969.1054260.
  5. M. Hell, T. Johansson, A. Maximov, and W. Meier, “A Stream Cipher Proposal: Grain-128,” in Proc. IEEE International Symposium on Information Theory (ISIT), pp. 1614-1618, 2006. doi: 10.1109/ISIT.2006.261549.
  6. Y. Dodis, L. Reyzin, and A. Smith, “Fuzzy Extractors: How to Generate Strong Keys from Biometrics and Other Noisy Data,” in Advances in Cryptology - EUROCRYPT 2004, LNCS, pp. 523-540, 2004. doi: 10.1007/978-3-540-24676-3_31.
  7. J. Guajardo, S. S. Kumar, G.-J. Schrijen, and P. Tuyls, “FPGA Intrinsic PUFs and Their Use for IP Protection,” in Cryptographic Hardware and Embedded Systems - CHES 2007, LNCS, pp. 63-80, 2007. doi: 10.1007/978-3-540-74735-2_5.
  8. C. De Cannière, “Trivium: A Stream Cipher Construction Inspired by Block Cipher Design Principles,” in Proc. Int. Conf. Information Security (ISC), 2006. doi: 10.1007/11836810_13.
  9. M. Ågren, M. Hell, T. Johansson, and W. Meier, “Grain-128a: a new version of Grain-128 with optional authentication,” International Journal of Wireless and Mobile Computing, vol. 5, no. 1, 2011. doi: 10.1504/IJWMC.2011.044106.