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Updated: Jul 18, 2025

Data Communication Based on MQTT in a Polymer Extrusion Process
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Decentralized Policy-Hidden Fine-Grained Redaction in Blockchain-Based IoT Systems.

Hongchen Guo1, Xiaolong Tao2, Mingyang Zhao2

  • 1School of Computer Science and Technology, Beijing Institute of Technology, Beijing 100081, China.

Sensors (Basel, Switzerland)
|August 26, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces PFRB, a novel policy-hidden redactable blockchain for IoT systems. PFRB enhances data security by protecting users' redaction policies, preventing privacy leaks in decentralized applications.

Keywords:
blockchain-based IoT systemsdecentralizationfine-grained redactionpolicy hiding

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Area of Science:

  • Computer Science
  • Information Security
  • Internet of Things

Background:

  • Decentralized redactable blockchains are used in IoT for data management.
  • Existing systems lack policy privacy, leading to sensitive information leakage.
  • This limits the application scope of redactable blockchains in IoT.

Purpose of the Study:

  • To propose PFRB, a policy-hidden, fine-grained redactable blockchain for decentralized IoT systems.
  • To address the privacy leakage threat posed by users' redaction policies.
  • To enable secure and controllable data management in IoT environments.

Main Methods:

  • PFRB utilizes decentralized settings and chameleon hash-based redaction.
  • Policy contents are converted into polynomial parameters using Newton's interpolation formula.
  • Multi-authority attribute-based encryption is employed to hide policy parameters.
  • Policy matching is performed while keeping policy contents concealed.

Main Results:

  • Theoretical analysis confirms the correctness and security against chosen-plaintext attacks.
  • Experiments on the FISCO blockchain platform demonstrate competitive efficiency.
  • PFRB effectively hides policy contents during matching, preventing inference.
  • Valid redactions are only executable upon successful policy matching.

Conclusions:

  • PFRB successfully bridges the research gap in policy privacy for redactable blockchains in IoT.
  • The proposed system enhances user privacy and expands the applicability of redactable blockchains.
  • PFRB offers a secure, efficient, and privacy-preserving solution for data management in IoT systems.