Abstract
To solve the problem of mass encrypted information efficient safety retrieval, based on the cipher-text retrieval in cloud environment, a kind of safety cipher-text clustered index based on B + tree is builded and a cipher text full text retrieval system is implemented. To ensure the system security and data privacy, retrieval process completely is all under the cipher-text environment. System security analysis showed that can effectively resist cipher-text-only attack and choose plain-text attack. The test performance results show that it not only has high safety, but also has a good retrieval efficiency.
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