云环境中新的安全密文模糊检索算法研究

Research on New Security Ciphertext Fuzzy Retrieval Algorithm in Cloud Environment

针对当前现有的密文技术存在的不足进行改进,本文提出一种新的安全密文模糊检索算法,该算法的原理是依据关键词在文档的出现的频率进行关键词语义词库的构建。在进行检索的时候,云服务商可以对用户提交的检索关键词利用算法进行扩展,由扩展得到的关键词进行检索,然后对所检索文档进行相关度的排序,返回结果(用户可以指定结果的数量限制,若是设限,则只返回指定数量的方档)。仿真实验结果表明,本文提出的安全密文模糊检索算法具有良好的关键字检索的效率以及安全性能。

In view of the current existing problems of the cipher technology was improved,this paper proposes a new security cipher text fuzzy retrieval algorithm,this algorithm is based on the principle of the key words in the document for the frequency of words semantic word library building.When retrieved,cloud service providers to extend the user submits the search keywords using the algorithm,by extending the keyword search,then the relevance of the retrieved document sorting,return the result(the user can specify the results of quantitative restrictions,and if the cap,it only returns the specified number of square).The simulation results show that this paper presents a new security ciphertext fuzzy retrieval algorithm with good efficiency and safety performance.