As more people use cloud storage for their data, ensuring that only authorized users can access it becomes crucial. This article introduces a new system called MKSABE-VaAR (multi-keyword searchable attribute-based encryption with verification and attribute revocation). Unlike many current systems that are slow or only support single-keyword searches, MKSABE-VaAR allows searching for multiple keywords at once. It does this by combining keywords into a single polynomial, which speeds up the search process and reduces the number of complex calculations needed. MKSABE-VaAR also improves search accuracy by verifying user attributes during the search. It uses a linear secret-sharing method to handle attribute revocation more efficiently, which lowers the computational cost. Additionally, by storing data and indexes separately, MKSABE-VaAR helps reduce the risk of data leakage.

Keywords: Searchable encryption, attribute-based encryption, linear secret sharing, attribute revocation