Fuzzy Multi-Keyword Query on Encrypted Data in the Cloud

With the popularity of cloud computing, more and more data information is gradually shift to the cloud. The security of cloud data has become a difficult problem that needs to be solved urgently. Data encryption is an effective means to ensure the security of data in the cloud. However, the retrieval of encrypted data is very different from the retrieval of plaintext. The traditional plaintext retrieval method is no longer suitable for the retrieval of the cipher text. In the previous fuzzy search strategy, although fuzzy keyword sets that building on keyword dictionary can realize the fuzzy search. But when the keyword set is constantly increasing, the fuzzy set will be exponentially growing. So the retrieval efficiency will be very difficult to make people satisfied. On the basis of the existing encryption data fuzzy search scheme, abandoned the original fuzzy set of keywords, the search request of keywords and keyword Dictionary of keywords matching correction method to realize the fuzzy search, improving the efficiency of retrieval. At the same time, the Chinese and English data mixed more and more, and the existing fuzzy retrieval scheme supports only a single language retrieval, using English and Chinese comparison table convert Chinese keyword to English keyword to support Chinese and English keyword search, making the precision ratio improved, greatly improving the user's search experience.