@INPROCEEDINGS{5541682, author={Wang, Cong and Cao, Ning and Li, Jin and Ren, Kui and Lou, Wenjing}, booktitle={2010 IEEE 30th International Conference on Distributed Computing Systems}, title={Secure Ranked Keyword Search over Encrypted Cloud Data}, year={2010}, volume={}, number={}, pages={253-262}, doi={10.1109/ICDCS.2010.34}}