Abstract :

Mobile Crowdsensing (MCS) Has Emerged As An Effective Paradigm For Large-scale Data Collection Using Sensor-enabled Mobile Devices. However, Conventional MCS Systems Rely On Centralized Architectures That Assume Complete Trust Among Participants, Resulting In Critical Challenges Such As Data Security Vulnerabilities, Privacy Breaches, Unauthorized Access, Data Leakage, And Impersonation Attacks. To Address These Limitations, This Paper Proposes A Consortium Blockchain-based Access Control Framework That Ensures Secure And Privacy-preserving Data Management In MCS Environments. The Proposed Framework Adopts A Hybrid Architecture By Integrating Off-chain Encrypted Data Storage With On-chain Access Control And Auditing Mechanisms. Sensitive User Data Is Encrypted Using Fernet Symmetric Encryption And Stored In An Off-chain Database To Maintain Confidentiality. A Solidity-based Smart Contract Deployed On A Consortium Blockchain Manages User Identities, Data Ownership, Access Permissions, And Audit Logs In A Transparent And Immutable Manner. Additionally, A Keyword-based Indexed Retrieval Mechanism Is Introduced To Enable Efficient Data Search Without Revealing Encrypted Content. The System Allows Users To Request Access To Specific Data, While Data Owners Retain Full Control Over Permission Approvals Through Blockchain-enforced Policies. All Transactions, Including Access Requests And Approvals, Are Recorded On-chain, Ensuring Traceability, Accountability, And Tamperproof Auditing. The Framework Is Implemented Using Flask For Backend Development, SQLite For Off-chain Storage, And Ganache To Simulate The Blockchain Environment, Demonstrating A Practical Prototype

Published:

15-4-2026

Issue:

Vol. 26 No. 4 (2026)

Page Nos:

2340 - 2346

Section:

Articles

License:

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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