International Workshop on Cryptographic Hardware and Embedded Systems

CHES 2010: Cryptographic Hardware and Embedded Systems, CHES 2010 pp 335-350

An Alternative to Error Correction for SRAM-Like PUFs

  • Maximilian Hofer
  • Christoph Boehm
Conference paper

DOI: 10.1007/978-3-642-15031-9_23

Volume 6225 of the book series Lecture Notes in Computer Science (LNCS)
Cite this paper as:
Hofer M., Boehm C. (2010) An Alternative to Error Correction for SRAM-Like PUFs. In: Mangard S., Standaert FX. (eds) Cryptographic Hardware and Embedded Systems, CHES 2010. CHES 2010. Lecture Notes in Computer Science, vol 6225. Springer, Berlin, Heidelberg


We propose a new technique called stable-PUF-marking as an alternative to error correction to get reproducible (i.e. stable) outputs from physical unclonable functions (PUF). The concept is based on the influence of the mismatch on the stability of the PUF-cells’ output. To use this fact, cells providing a high mismatch between their crucial transistors are selected to substantially lower the error rate. To verify the concept, a statistical view to this approach is given. Furthermore, an SRAM-like PUF implementation is suggested that puts the approach into practice.


Physical Unclonable FunctionsSRAMPre-Selection
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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Maximilian Hofer
    • 1
  • Christoph Boehm
    • 1
  1. 1.Institute of ElectronicsGraz University of Technology