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All-silicon multidimensionally-encoded optical physical unclonable functions for integrated circuit anti-counterfeiting

Author

Listed:
  • Kun Wang

    (Zhejiang University)

  • Jianwei Shi

    (National Center for Nanoscience and Technology
    Chinese Academy of Sciences)

  • Wenxuan Lai

    (Zhejiang University)

  • Qiang He

    (Zhejiang University)

  • Jun Xu

    (Nanjing University
    Nantong University)

  • Zhenyi Ni

    (Zhejiang University)

  • Xinfeng Liu

    (National Center for Nanoscience and Technology)

  • Xiaodong Pi

    (Zhejiang University
    Zhejiang University)

  • Deren Yang

    (Zhejiang University
    Zhejiang University)

Abstract

Integrated circuit anti-counterfeiting based on optical physical unclonable functions (PUFs) plays a crucial role in guaranteeing secure identification and authentication for Internet of Things (IoT) devices. While considerable efforts have been devoted to exploring optical PUFs, two critical challenges remain: incompatibility with the complementary metal-oxide-semiconductor (CMOS) technology and limited information entropy. Here, we demonstrate all-silicon multidimensionally-encoded optical PUFs fabricated by integrating silicon (Si) metasurface and erbium-doped Si quantum dots (Er-Si QDs) with a CMOS-compatible procedure. Five in-situ optical responses have been manifested within a single pixel, rendering an ultrahigh information entropy of 2.32 bits/pixel. The position-dependent optical responses originate from the position-dependent radiation field and Purcell effect. Our evaluation highlights their potential in IoT security through advanced metrics like bit uniformity, similarity, intra- and inter-Hamming distance, false-acceptance and rejection rates, and encoding capacity. We finally demonstrate the implementation of efficient lightweight mutual authentication protocols for IoT applications by using the all-Si multidimensionally-encoded optical PUFs.

Suggested Citation

  • Kun Wang & Jianwei Shi & Wenxuan Lai & Qiang He & Jun Xu & Zhenyi Ni & Xinfeng Liu & Xiaodong Pi & Deren Yang, 2024. "All-silicon multidimensionally-encoded optical physical unclonable functions for integrated circuit anti-counterfeiting," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47479-y
    DOI: 10.1038/s41467-024-47479-y
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    References listed on IDEAS

    as
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