A Novel User Model Based on Searchable Encryption Scheme

With the development of cloud computing and cloud storage technology, the privacy disclosure of the query and the destruction of data integrity on the outsourced data are two increasingly serious security issues in the cloud services. In order to resolve these two problems, we propose a novel user model based on searchable encryption scheme. And the model introduces a trusted third authority (TA), which is independent from the honest but curious cloud server. It allows multi-keyword search and informs data integrity verify results on the cipher text and outsourced data to users simultaneously. Finally, we demonstrate that the new scheme we proposed can enable the user has capability of searchable encryption and integrity verify on the outsourced data, reducing the users´ computation overhead.