A Survey on Cloud Group Data Sharing using Key-Aggregate Searchable Encryption (KASE) Scheme

Abstract

Cloud computing is latest technology widely serving client oriented applications. It has the capability of sharing selective encrypted data via public cloud storage with multiple users which may ease security over accidental data leaks in the cloud. Efficient key management is important in encryption schemes. For sharing multiple documents with different groups in cloud, separate encryption keys are needed. Security is required by owner to distribute large number of keys for encryption and searching, and by users to store received keys. Users have to submit equal number of trapdoors to the cloud for search operation. In such case features of security, storage and complexity are required at its best performance. Key-Aggregate Searchable Encryption (KASE) scheme addresses to the problem of storage management and security in group data sharing on cloud. Through this scheme only single key is distributed by owner to user for sharing multiple documents, and user also required to submit single trapdoor to receive shared documents. KASE scheme is efficient and secure as resulted by security analysis tests.