Privacy Preserving in Distributed Verifiable Data Control in Cloud Storage

Cloud computing economically enables the paradigm of data service outsourcing. However, to protect data privacy, sensitive cloud data have to be encrypted before outsourced to the commercial public cloud, which makes effective data utilization service a very challenging task. Although traditional searchable encryption techniques allow users to securely search over encrypted data through keywords. In this paper, we define and solve the problem ofsecure ranked keyword search over encrypted cloud data.