Enhancing Data Privacy Protection in Cloud Computing Through Ciphertext-Policy Attribute-Based Encryption

Abstract

The paper highlights the significance of Ciphertext-Policy ABE in enabling broadcast, secure transmission, and effective control over data access within cloud computing systems. However, the existing implementation of Ciphertext-Policy ABE presents a vulnerability, as plaintext access policies transmitted alongside ciphertexts may unintentionally expose sensitive user and data privacy information. To address this issue, a novel technique is proposed, which leverages hashing techniques to conceal access policies and strengthens protection against potential attacks through signature validation methods. Comparative analysis with existing techniques emphasizes the effectiveness of the proposed scheme in enhancing privacy and security within cloud computing environments. By addressing vulnerabilities in Ciphertext-Policy ABE and introducing innovative methods for access policy concealment and security enhancement, this study contributes to advancing secure data management practices and promoting greater confidence in cloud computing systems.