@INPROCEEDINGS{6258194, author={Li, Ming and Yu, Shucheng and Lou, Wenjing and Hou, Y. Thomas}, booktitle={2012 32nd International Conference on Distributed Computing Systems Workshops}, title={Toward Privacy-Assured Cloud Data Services with Flexible Search Functionalities}, year={2012}, volume={}, number={}, pages={466-470}, doi={10.1109/ICDCSW.2012.41}}