Sanitizable Access Control System for Secure Cloud Storage Against Malicious Data Publishers

Cloud computing, while cost-effective, faces security challenges from malicious data publishers. Existing solutions focus on controlling access for legitimate users but neglect the threat posed by these malicious entities. Addressing this gap, our research introduces the concept of a Sanitizable Access Control System (SACS) for secure cloud storage. SACS, based on q-Parallel Bilinear Diffie-Hellman Exponent Assumption, safeguards against unauthorized decryption attempts by malicious data publishers. Our work defines a threat model, formal security measures, and presents a secure design with a security proof. This pioneering approach fills a practical research gap, enhancing the practical adoption of secure cloud storage amid evolving security concerns.

Keyword—Secure cloud storage, access control, sanitizable, malicious data publishers.