Efficient and safe multi-keyword-supporting searching method in mobile cloud

Abstract

The invention discloses an efficient and safe multi-keyword-supporting searching method in a mobile cloud. The method is based on a TF-IDF (Term Frequency-Inverse Document Frequency) search model; a data owner stores an encrypted document and an encrypted document index in a cloud end, and a data user inputs a keyword which is encrypted by Fast Accumulated Hashing to search the encrypted document stored in the cloud end, so that search safety is realized. The isolation of search is realized through the addition of noise. The search control is realized through user registration and verification. The high efficiency of search is realized through one-time communication, keyword compression, establishment of search cache and binary set. The efficient and safe multi-keyword-supporting searching method in the mobile cloud guarantees security of document collection, keywords and indexes involved in the search process in the aspect of security, simplifies the search process, increases the search efficiency, compresses total communication amount and reduces communication bandwidth in the aspect of efficiency, and solves the bandwidth bottleneck problem of the encrypted search on a cloud platform.

Description

technical field [0001] The present invention proposes an efficient multi-keyword search model based on the mobile cloud platform. Specifically, from the perspective of security, the security of the document set, keywords, and indexes involved in the search process is guaranteed. From the perspective of efficiency, the simplified The search process is simplified, the search efficiency is improved, the total amount of communication is compressed, and the communication bandwidth is reduced. Solved the bandwidth bottleneck problem of encrypted search on the mobile cloud platform. Background technique [0002] With the development of cloud computing, more and more service providers are more willing to deploy their services to the cloud platform instead of purchasing and maintaining their own hardware. Service providers also store their own data in the cloud. At the same time, with the development of mobile devices, more and more cases are directly using mobile clients to access...

AI Technical Summary

Problems solved by technology

[0011] In view of the defects of the above-mentioned existing methods applied to the mobile cloud platform, the problem to be solved by the present invention is to provide an efficient and safe encrypted search method on the mobile cloud platform to overcome the performance and user problems caused by the high communication cost in the encrypted search process. lack of experience

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