@INPROCEEDINGS{5961720, author={Cao, Ning and Yang, Zhenyu and Wang, Cong and Ren, Kui and Lou, Wenjing}, booktitle={2011 31st International Conference on Distributed Computing Systems}, title={Privacy-Preserving Query over Encrypted Graph-Structured Data in Cloud Computing}, year={2011}, volume={}, number={}, pages={393-402}, doi={10.1109/ICDCS.2011.84}}