Full text search system based on ciphertext

A retrieval system and full-text technology, applied in the field of full-text retrieval systems based on ciphertext, can solve problems such as increased information volume and ciphertext information processing, and achieve the effects of ensuring secure retrieval, strong security, and high execution efficiency
CN1932816AInactive Publication Date: 2007-03-21HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2007-03-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

Full text index system based on cryptograph relates to data bank, enter module, demand module, result gather dispose module, electronic document dispose module, index module, audit manage module, user manage module and purview manage module. The demand module relates to demand participle module, demand encryption module, logic combination module, demand sub-module, visiting controlled module and result gather dispose module. Result gather dispose module relates to tabloid module and snapshot module. Index module relates to index participle module, index encryption module and index sub-module. The system offers a kind of participle strategy-the Chinese acceptation combines with automatic syncopation, without the position instance for index words in the original text. During the user visiting the document, add visiting domination to restrict user purview and to keep the security of sensitive information. It can realize full text index with cryptograph and keep the security of sensitive information with strong safety and high efficiency.
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Description

technical field

[0001] The invention belongs to the technical field of computer retrieval, and in particular relates to a ciphertext-based full-text retrieval system. Background technique

[0002] The information age has produced a large amount of digital information, among which text information is the most basic and most commonly used storage form. In order to find what they need in the vast amount of text information, people urgently need an efficient retrieval tool. How to efficiently store and query unstructured data such as text is a problem worthy of research. Among them, full-text retrieval technology and full-text database technology have become the research hotspots of domestic and foreign scholars.

[0003] Full-text retrieval is a technology that takes text data as the main processing object, based on full-text indexing, and uses natural language for retrieval. In the field of information retrieval, full-text retrieval has always been a relatively complicated p...

Claims

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