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To preserve privacy, sensitive data in cloud computing needs to be encrypted before outsourcing, which obstacles data utilization based on plaintext search. Thus there spring up several secure schemes which enable encrypted cloud-data search. However, these single-cloud-supported search schemes would suffer from service failure, inefficient application, and privacy problem when they are applied to...
With the growing popularity of outsourcing data and services to the cloud, performing queries on encrypted data becomes a promising technique. Searchable encryption (SE) allows encryption while still enabling search for a variety of data. However, most of the existing arts focus on rectangular range query on common database. Query on encrypted spatial database has not been well studied. Moreover,...
With the development of cloud computing, data sharing has a new effective method, i.e., outsourced to cloud platform. In this case, since the outsourced data may contain privacy, they only allow to be accessed by the authorized users. Encrypting the data before outsourcing is a commonly used approach, where the data owners only need to send the corresponding encryption key to the authorized users...
With the in-depth study of smart grid, energy auction attracts a lot of attention due to its economic benefits. Many schemes have been proposed to support energy auction in smart grid. However, few of them achieve range query and ranked search. In this paper, we propose a ranked range query (RRQ) scheme, which can support both range query and ranked search. Based on the homomorphic Paillier cryptosystem,...
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