Practical Techniques for Searches on Encrypted Data
SP '00 Proceedings of the 2000 IEEE Symposium on Security and Privacy
Order preserving encryption for numeric data
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
Confidentiality-preserving rank-ordered search
Proceedings of the 2007 ACM workshop on Storage security and survivability
Introduction to Information Retrieval
Introduction to Information Retrieval
Order-Preserving Symmetric Encryption
EUROCRYPT '09 Proceedings of the 28th Annual International Conference on Advances in Cryptology: the Theory and Applications of Cryptographic Techniques
Achieving secure, scalable, and fine-grained data access control in cloud computing
INFOCOM'10 Proceedings of the 29th conference on Information communications
Secure Ranked Keyword Search over Encrypted Cloud Data
ICDCS '10 Proceedings of the 2010 IEEE 30th International Conference on Distributed Computing Systems
FC'10 Proceedings of the 14th international conference on Financial cryptograpy and data security
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Ranking the encrypted documents stored on cloud storage servers is important in encrypted information retrieval. Order preserving encryption (OPE) could be used to help ranking the encrypted documents. However, order preserving encryption schemes don't support additions over cipher texts. A new additive order preserving encryption is proposed. Both the cipher text and the sum of the cipher texts preserve orders. By summing up the encryptions of term weights, the relevance between encrypted documents and queries are obtained. According to the relevance the documents are ranked. Experimental results show that the proposed encryption scheme based ranking could achieve very good retrieval performance.