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Physical Unclonable Function based on a Multi-Mode Optical Waveguide.

Charis Mesaritakis1, Marialena Akriotou2, Alexandros Kapsalis3

  • 1Eulambia Advanced Technologies Ltd. Ag. Ioannou 24, 15342, Athens, Greece. charis.mesaritakis@eulambia.com.

Scientific Reports
|June 27, 2018
PubMed
Summary
This summary is machine-generated.

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This study introduces a novel optical waveguide physical unclonable function (PUF). This PUF offers enhanced security for authentication applications by generating unique, unclonable responses without needing key storage.

Area of Science:

  • Optics and Photonics
  • Cryptography
  • Materials Science

Background:

  • Physical unclonable functions (PUFs) offer hardware security by leveraging unique physical properties.
  • Traditional PUFs often require secure storage for generated keys.
  • Optical PUFs present an alternative with inherent physical complexity.

Purpose of the Study:

  • To experimentally and numerically validate a novel physical unclonable function (PUF) based on a single optical waveguide.
  • To demonstrate enhanced physical unclonability and re-configurability for authentication applications.

Main Methods:

  • Utilized a single optical waveguide to generate speckle-like images from mode-mixing and scattering.
  • Employed simultaneous physical scrambling mechanisms for improved unclonability.

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  • Performed experimental validation and numerical simulations of the optical PUF system.

    • Main Results:

    • The optical waveguide PUF successfully generated unique, irreversible responses (speckle images).
    • The proposed configuration demonstrated superior physical unclonability compared to conventional optical PUFs.
    • The system exhibited physical re-configurability, enhancing its suitability for demanding applications.

    Conclusions:

    • The developed optical waveguide PUF is a promising solution for secure authentication where data storage is limited.
    • The combination of mode-mixing, scattering, and re-configurability provides robust hardware security.
    • This approach alleviates the need for non-volatile key storage, a significant advantage in cryptographic applications.