GROUP DATA SHARING FOR MULTI OWNER USING SINGLE KEY AGGREGATION

Abstract

The largest issue for spread the data over a public cloud storage is Privacy. Data sharing is valuable
functionality in cloud storage. The solution for secure data transfer is to encrypt the data before sharing and decrypting
it after data retrieval by those who have the decryption keys. The practical issue of privacy protecting data sharing
system based on public cloud storage which requires a data owner to spreading a large number of keys to users to enable
them to access his/her files. By pointing this practical problem which is largely neglected in literature, we propose the
concept of key aggregate Search Encryption (KASE) in which data owner only necessary to Spread a single trapdoor to
group of users for sharing large number of documents and user only needs to submit a trapdoor to the cloud for querying
and searching the shared a large number of documents.