A Secure and Dynamic Multi-Keyword Ranked Search Scheme over Encrypted Cloud Data

 A Secure and Dynamic Multi-Keyword Ranked Search Scheme over Encrypted Cloud Data

 Due to the increasing popularity of cloud computing, more and more data owners are motivated to outsource their data to cloud servers for great convenience and reduced cost in data management. However, sensitive data should be encrypted before outsourcing for privacy requirements, which obsoletes data utilization like keyword-based document retrieval. In this paper, we present a secure multi-keyword ranked search scheme over encrypted cloud data, which simultaneously supports dynamic update operations like deletion and insertion of documents.