AKSER: Attribute-based keyword search with efficient revocation in cloud computing

摘要

Highlights?We design a novel and scalable multi-certificate authority keyword search scheme supporting multiple data owners and multiple users based on attribute-based encryption.?The administration server is introduced as a trusted third party, which can realize the efficient revocation of the user.?This scheme improves the accuracy of the cloud server in the implementation of the search task.AbstractWith the advent of cloud computing, it is becoming increasingly popular for data owners to outsource their data to public cloud servers while allowing indented data users to retrieve these data stored in the cloud. For security and privacy reasons, data owners usually encrypt their data prior to outsourcing to the cloud server. At the same time, users often need to find data related to specific keywords of interest, this motivates research on the searchable encryption technique. In this paper, we focus on a different, yet more challenging, scenario where the outsourced dataset