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Mathematical Problems in Engineering - Volume 2016 2016, Article ID 6549570, 7 pages -

Research ArticleDepartment of Computer Science, Jinan University, Guangzhou 510632, China

Received 30 May 2016; Accepted 17 October 2016

Academic Editor: Nazrul Islam

Copyright © 2016 Daini Wu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A public key encryption scheme with keyword search capabilities is proposed using lattices for applications in multiuser environments. The proposed scheme enables a cloud server to check if any given encrypted data contains certain keywords specified by multiple users, but the server would not have knowledge of the keywords specified by the users or the contents of the encrypted data, which provides data privacy as well as privacy for user queries in multiuser environments. It can be proven secure under the standard learning with errors assumption in the random oracle model.

Autor: Daini Wu, Xiaoming Wang, and Qingqing Gan



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