Key Aggregate Searchable Encryption for Group Data Sharing Via Cloud Data Storage

the ability of preferentially sharing encrypted data with unlike users through public cloud storage might really ease security distress, by possibility data disclose in the cloud. A key test to design such encryption idea lies in the well-organized management encryption keys. The preferred flexibility of allocating any group documents with any group of users by attaining weightage different encryption keys to be used for different documents. On the other hand, this involves the need of securely distributing to users by a large number of keys for both encryption and search, and those users have to progress to store the received keys. The indirect need for secure communication, storage, and complexity clearly cause the unreasonable approach. In this paper, we concentrate on this practical problem, by suggesting the novel concept of key aggregate searchable encryption (KASE) and instantiating the idea through a real KASE scheme, in which a data owner wants to share out a single key to a user for distributing a large number of documents, and the user needs to present a single trapdoor to the cloud for questioning the shared documents. Keywords—data sharing, Searchable encryption, data privacy, cloud storage ——————————  ——————————