Privacy-Preserving Multi-Keyword Fuzzy Search over Encrypted Data in the Cloud

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Provided by: Institute of Electrical & Electronic Engineers
Topic: Cloud
Format: PDF
Enabling keyword search directly over encrypted data is a desirable technique for effective utilization of encrypted data outsourced to the cloud. Existing solutions provide multi-keyword exact search that does not tolerate keyword spelling error, or single keyword fuzzy search that tolerates typos to certain extent. The current fuzzy search schemes rely on building an expanded index that covers possible keyword misspelling, which lead to significantly larger index file size and higher search complexity. In this paper, the authors propose a novel multi-keyword fuzzy search scheme by exploiting the locality-sensitive hashing technique.
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