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A Secured Proxy-Based Data Sharing Module in IoT Environments Using Blockchain.

Kwame Opuni-Boachie Obour Agyekum1,2, Qi Xia3,4, Emmanuel Boateng Sifah5

  • 1Center for Cyber Security, University of Electronic Science and Technology of China, Chengdu 611731, China. obour539@yahoo.com.

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Summary

This study introduces a secure Proxy Re-Encryption (PRE) scheme using Inner-Product Encryption (IPE) to protect cloud data from collusion attacks. By leveraging blockchain and data partitioning, it ensures confidentiality and fine-grained access control for Internet of Things (IoT) data.

Keywords:
Attribute-Based Encryption (ABE)Inner-Product Encryption (IPE)Internet of Things (IoT)blockchaincyber-securityfine-grained access controlproxy re-encryption

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Area of Science:

  • Computer Science
  • Cybersecurity
  • Cloud Computing

Background:

  • Cloud computing and the Internet of Things (IoT) generate vast amounts of data, increasing security and privacy concerns.
  • Attribute-Based Encryption (ABE), particularly Key Policy-ABE (KP-ABE), is used for data confidentiality and access control in the cloud.
  • Existing schemes are vulnerable to collusion attacks between revoked users and cloud servers, compromising data confidentiality.

Purpose of the Study:

  • To propose a novel and secure Proxy Re-Encryption (PRE) scheme to address collusion attacks in cloud data sharing.
  • To enhance data confidentiality and achieve fine-grained access control for IoT data in cloud environments.
  • To integrate Inner-Product Encryption (IPE) and blockchain technology for robust data security.

Main Methods:

  • Developed a Proxy Re-Encryption (PRE) scheme incorporating an Inner-Product Encryption (IPE) mechanism.
  • Utilized a blockchain network where nodes act as proxy servers for data re-encryption.
  • Implemented a data partitioning strategy, storing parts of the data on the blockchain and the cloud to prevent collusion.

Main Results:

  • The proposed scheme effectively prevents collusion attacks between revoked users and cloud servers.
  • Achieved enhanced data confidentiality through the integration of IPE and blockchain.
  • Demonstrated fine-grained access control capabilities for data stored in the cloud.

Conclusions:

  • The novel PRE scheme offers a secure and efficient solution for protecting cloud-based IoT data.
  • The combination of IPE, blockchain, and data partitioning provides a robust defense against sophisticated security threats.
  • This approach significantly improves data security and access management in cloud environments.