A Proxy Re-encryption Approach To Secure Data Sharing In The Internet Of Things Based On Blockchain

Abstract

The Rapid Evolution Of The Internet Of Things (IoT) Has Enabled Massive Data Generation And Sharing Across Cloud Platforms. However, Data Security Remains A Critical Challenge, As Unauthorized Access Or Misuse Can Lead To Severe Consequences. To Address This, We Propose A Proxy Re-Encryption (PRE) Based Approach For Secure Data Sharing In IoT Environments, Integrated With Blockchain For Decentralization And Trust. Data Owners Can Encrypt Their Data Using Identity-based Encryption And Outsource It To The Cloud. A Proxy Server, Typically An Edge Device, Handles Intensive Computations To Re-encrypt The Data For Authorized Users, Enabling Secure Access Without Revealing The Original Content. Blockchain Is Integrated To Record Data Access Requests, Approvals, And Transactions In A Tamper-proof And Decentralized Manner, Ensuring Transparency And Trust. By Splitting Data Into Multiple Blocks And Enforcing Trusted Authority Validation For Users And Owners, The System Enhances Confidentiality, Integrity, And Availability. Overall, This Approach Provides A Scalable, Efficient, And Secure Solution For IoT Data Sharing With Minimal Delay And Reduced Computational Overhead On IoT Devices.

Keywords