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Related Experiment Videos

A Lightweight Certificateless Identity Authentication Protocol Using SM2 Algorithm and Self-Secured PUF for IoT.

Meili Zhang1, Qianqian Zhao2, Chao Li1

  • 1Hubei Provincial Research Institute of Water Resources and Hydropower, Wuhan 430070, China.

Sensors (Basel, Switzerland)
|May 13, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces a new IoT identity authentication method using Physical Unclonable Functions (PUFs) and SM2 Certificateless Public Key Cryptography (CLPKC). It enhances security and efficiency for connected devices.

Keywords:
Internet of Things (IoT)certificateless public key mechanisms based on the SM2 algorithmsidentity authenticationphysically unclonable functions (PUF)

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Area of Science:

  • Computer Science
  • Cryptography
  • Cybersecurity

Background:

  • Internet of Things (IoT) devices face significant security vulnerabilities, particularly in identity authentication.
  • Existing methods like certificate-based systems have high overhead, while Identity-Based Cryptography has key escrow risks.

Purpose of the Study:

  • To propose a robust and efficient certificateless identity authentication mechanism for IoT devices.
  • To integrate Physical Unclonable Functions (PUFs) with SM2 Certificateless Public Key Cryptography (CLPKC).

Main Methods:

  • Utilizing PUF technology to generate a unique hardware-based root key for partial private key generation.
  • Adopting a CLPKC framework where the Key Generation Centre (KGC) and device jointly create the private key.
  • Analyzing the scheme's security under the random oracle model.

Main Results:

  • The proposed mechanism effectively mitigates physical cloning, man-in-the-middle, and replay attacks.
  • User public key identifiers are reduced to 64 bytes, significantly smaller than traditional PKI/CA certificates (1-2 KB).
  • The scheme offers enhanced storage and communication efficiency.

Conclusions:

  • The PUF and SM2-based certificateless authentication mechanism provides provable security for IoT devices.
  • This approach offers a practical solution to enhance IoT security and efficiency by binding identity to hardware and reducing cryptographic overhead.