Ensuring Secure Cloud Data Sharing Through Blockchain-Based Auditing For Authentication And Fuzzy Identity-Based Proxy Re-Encryption For Access Control

Abstract

In today's data-driven digital landscape, ensuring data integrity and transparency is crucial for businesses, governments, and organizations. Traditional auditing methods struggle with real-time, verifiable, and tamper-proof data transaction records. Blockchain technology emerges as a solution, offering immutability, transparency, and decentralization, which enhance auditing processes. Initially popular for cryptocurrencies like Bitcoin, blockchain is now a versatile tool for creating transparent, secure audit trails, allowing stakeholders to verify data authenticity without centralized authorities. Coupled with digital signatures, blockchain-based auditing ensures public auditability, making audit records publicly accessible yet tamper-proof. This research explores blockchain-based auditing for data public auditability, focusing on integrating digital signatures to bolster security and trust. It examines blockchain and digital signature principles, their synergy, and their potential to revolutionize auditing. The study also discusses the benefits, challenges, and future developments of this approach, highlighting its role in ensuring data integrity and accountability amid rapid data proliferation and cyber threats. Additionally, the research investigates cloud data sharing using Fuzzy Identity-Based Encryption with Proxy Re-Encryption (FuzzyIBE-PRE), aiming to develop robust, efficient data-sharing mechanisms. By leveraging FuzzyIBE-PRE, the study facilitates flexible access control and data privacy, addressing security and performance challenges in cloud computing.