Security cloud disc for Chinese and English keyword fuzzy search
A fuzzy search and keyword technology, applied in the field of network keyword search, can solve problems such as inconsistency in format, increase the fuzzy degree of fuzzy matching, and unsatisfactory, and achieve high efficiency and improve search efficiency.
Inactive Publication Date: 2014-08-06
FUZHOU UNIV
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) Although this solution safely and effectively solves the problem of English ciphertext search, this solution can only provide accurate search for English keywords, which cannot meet the needs of users
When users use keywords to search, the keywords they input often have typos or inconsistent formats. To solve this problem, Ji proposed a keyword fuzzy set construction method based on wildcards and Gram-base. Ciphertext-based English keyword fuzzy query in storage environment, (relevant literature: S. Ji, G. Li, C. Li, et al. Efficient interactive fuzzy keyword search[C]. VLDB Journal, 2009, 20(4) : 617-640) This scheme constructs a fuzzy set of keywords at first, and performs trapdoor matching on the fuzzy set to complete the fuzzy search, which effectively solves the problem of safe and fast retrieval of English keyword fuzzy search in the ciphertext environment, but due to the Chinese The particularity of using an edit distance to represent the difference between any two Chinese characters increases the degree of fuzziness in the fuzzy matching process and is not suitable for Chinese keyword search of ciphertext
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[0013] Combine below figure 1 , figure 2 , image 3 And the specific embodiment will further illustrate the present invention.
[0014] The technical solution of the present invention is: it is composed of three parts: a client, a private cloud server, and a network cloud disk server; the client consists of a file encryption and decryption module, an interface display module, a keyword extraction module, Chinese and English keywords Recognition module, keyword fuzzy set construction module, trapdoor generation module, communication module; Described private cloud server end is made up of index tree construction module, index search module, communication module; Described network cloud disk server end is made up of file It is composed of a search module, a file storage module and a communication module; the respective communication modules on the client side, the private cloud server side, and the network cloud disk server side are connected to each other through the Interne...
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A security cloud disc for Chinese and English keyword fuzzy search is characterized by being composed of a client side, a private cloud server side and a network cloud disk server side. Sensitive data are stored in a cloud server by a user, documents can be encrypted and then uploaded, needed documents are returned through ciphertext retrieval, and therefore privacy of the documents is guaranteed. The security cloud disc provides Chinese and English fuzzy search for information retrieval of ciphertext documents, and high efficiency is achieved.
Description
technical field [0001] The invention relates to the technical field of network keyword search, in particular to the utilization of Chinese and English keyword fuzzy search in a cloud disk. Background technique [0002] In order to save personal storage resource expenses, more and more users store data in cloud service providers, and cloud service providers provide users with storage services in the form of network cloud disks, such as 360 cloud disks and Baidu cloud disks. Cloud service providers with direct access to user data are "semi-trusted", (relevant literature: Li J, Wang Q, Wang C, et al. Fuzzy keyword search over encrypted data in cloud computing[C] / / INFOCOM , 2010 Proceedings IEEE. IEEE, 2010: 1-5..) User data must be encrypted and protected before uploading, including the file name where the data is stored. Therefore, fast search and lookup of encrypted files becomes very important. [0003] After the data is encrypted and stored in the cloud storage server, ne...
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Login to View More IPC IPC(8): G06F17/30H04L29/06
CPCG06F16/2468H04L67/06
Inventor 陈何峰林柏钢杨旸钟玲吴阳王淑娥李宇翔
Owner FUZHOU UNIV