Research on privacy preserving keyword search in cloud storage

The development of cloud storage services makes companies who outsourced their data to cloud storage server can´t control their data by themselves as before. Then comes the security issues, especially the privacy preserving has become an more important security problem. The users always search their documents through keyword in plaintext, which may leak privacy of users in cloud storage environment. In this paper we propose an efficient privacy preserving keyword search scheme in cloud storage, the scheme satisfies the multi-user requirement with low computational overhead and flexible key management., and it is proved to be secure and feasible.