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Safety overlay network constructing method of ciphertext full text search system and corresponding full text search method

A retrieval system, construction method technology, applied in special data processing applications, instruments, electrical digital data processing and other directions, can solve the problem of ignoring the copy mechanism and so on

Active Publication Date: 2013-01-02
GUANGXI UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the P2P storage system faces many problems such as node heterogeneity, node selfishness, node security, and node timeliness, most studies focus on the search and location mechanism, ignoring the replication mechanism.

Method used

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  • Safety overlay network constructing method of ciphertext full text search system and corresponding full text search method
  • Safety overlay network constructing method of ciphertext full text search system and corresponding full text search method
  • Safety overlay network constructing method of ciphertext full text search system and corresponding full text search method

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Embodiment Construction

[0153] The ciphertext full-text retrieval system of the present invention, the ciphertext full-text retrieval system based on the dynamic successor tree index structure, the security overlay network construction method of the ciphertext full-text retrieval system, the corresponding full-text retrieval method and its working principle are described below in conjunction with the accompanying drawings and embodiments. Further clarification.

[0154] Such as figure 1 As shown, the system of the present invention includes: an original text processing module 100, a word segmentation module 200, an encryption module 300, a document ciphertext storage module 400, a ciphertext index module 500, a ciphertext retrieval module 600, a retrieval result processing module 700 and a system management module 800.

[0155] The working principle of the system is as follows:

[0156] (1) After the user logs in securely through the system management module 800, the system judges whether the user ...

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Abstract

The invention relates to a safety overlay network constructing method of ciphertext full text search system and a corresponding full text search method. The invention initially provides a safety overlay network concept used for peer-to-peer full test search, solves the problems of distribution, storage and search of massive ciphertext data index files under the premise that recall ratio and precision ratio are not influenced, realizes storage and search of massive data to peer-to-peer nodes of a distributed P2P (peer-to-peer) network and introduces an index file duplicate copying mechanism based on a pivot node, wherein the mechanism ensures that resource can be rapidly obtained by searches in different directions by virtue of a duplicate of the pivot node without increasing occupation of network bandwidth, so that the safety overlay network constructing method and the corresponding full text search method disclosed by the invention are more applicable to peer-to-peer full text search when information amount is large, and efficiency of full text search under the peer-to-peer network environment is further improved.

Description

[0001] This application is a divisional application of a Chinese invention patent application with an application date of May 31, 2010, an application number of 201010187384.4, and an invention titled "Ciphertext Full-Text Retrieval System". technical field [0002] The invention belongs to the fields of information retrieval and information security, and in particular relates to a ciphertext full-text retrieval system, a method for constructing a security coverage network, and a corresponding full-text retrieval method. Background technique [0003] With the rapid development of information technologies such as computers and communications, various applications such as electronic media have surged, and the informatization of traditional industries has also rapidly expanded. The generation of industrial and scientific data automation and semi-automation has caused a large amount of various data to accumulate; on the other hand, storage The rapid development of technology has ...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 霍林
Owner GUANGXI UNIV
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