Cipher Text Policy Attribute-Based Encryption Using Blockchain Technology

Abstract

Introduction: In today's interconnected digital world, the security and controlled access of sensitive data are paramount. This paper presents an innovative integration of Cipher Text Policy Attribute-Based Encryption (CP-ABE) with blockchain technology to enhance data security and access control. By combining CP-ABE's finegrained access control with blockchain's transparency and immutability, we propose a robust framework for secure data management. This paper outlines the theoretical foundations, provides a basic implementation, and discusses the potential impact of this integration.

Objectives: There is a noticeable research gap in the systematic integration of CP-ABE and blockchain to create a synergistic solution that strengthens data security and access control. Significant progress has been made in the field of information security and access control, driven by a growing interest in improving the confidentiality, integrity and sharing of controlled information.

Methods: Traditional encryption methods often grapple with a fundamental challenge: providing granular access control while maintaining data integrity. Cipher Text Policy Attribute-Based Encryption (CP-ABE) offers a promising approach to address this challenge by enabling data owners to define access policies based on attributes, rather than specific user identities. Meanwhile, the emergence of blockchain technology has heralded transformative changes in various domains, primarily in its role as the underlying technology for cryptocurrencies. Beyond the realm of cryptocurrencies, blockchain offers an immutable, transparent, and decentralized ledger that can revolutionize data management, storage, and access control. This paper presents an innovative integration of CP-ABE with blockchain technology, forging a novel framework that synergistically amalgamates the fine-grained access control of CP-ABE with the tamper-resistant and transparent attributes of blockchain. 

Results: In the realm of healthcare, patient data security and privacy are critical. By integrating CP-ABE with blockchain, healthcare providers can ensure that only authorized personnel with specific attributes can access patients' medical records, while blockchain guarantees the transparency and traceability of all access attempts.

Conclusions: This integration has profound implications for a wide array of applications. In the realm of healthcare, patient data security and privacy are critical. Similarly, in supply chain management, where traceability and authenticity are paramount, our integration can facilitate secure sharing of sensitive supply chain data among authorized stakeholders while the warting unauthorized access and ensuring an immutable audit trail.