Keyword Searchable Encryption with Access Control from a Certain Identity-Based Encryption

摘要

Data sharing on the cloud server is used because of the low management cost and its convenience. It is desirable for data to be stored on the cloud server in encrypted form for its confidentiality. To address the problem of searching on encrypted data, many searchable encryption schemes have been proposed. The searchable encryption enables the server to perform the keyword search on encrypted data without learning anything about the keyword and the original data. Some schemes have a function of access control over the encrypted data. But in these schemes the number of users providing the encrypted data to the server or performing the keyword search on encrypted data is limited. We propose a searchable encryption scheme with access control which does not limit the number of users providing and searching on the encrypted data.