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Method for establishing database cipher text indexes without partial ordering relation

A database and sequential relationship technology, applied in digital data protection, electronic digital data processing, special data processing applications, etc., can solve problems such as high maintenance cost of ciphertext index, hidden safety hazards, low efficiency, etc., to reduce complexity and reduce Lock conflict and high maintenance efficiency

Inactive Publication Date: 2013-01-16
BEIJING ANHUA JINHE TECH
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Problems solved by technology

However, this partial order relationship not only describes the data sequence, but also exposes the characteristics of the data. Attackers can analyze the data through this relationship characteristic to obtain the desired data, which has great security risks. At the same time, maintaining this The cost of this partial order relationship is also very high, which directly leads to high maintenance cost and low efficiency of ciphertext index

Method used

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  • Method for establishing database cipher text indexes without partial ordering relation

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Embodiment Construction

[0055] The construction of the ciphertext index in the method of the present invention is based on the extended indexing mechanism of current mainstream commercial databases (such as Extensible Indexing of ORACLE), and the index data is maintained and retrieved by implementing various extended interfaces provided by the extended indexing mechanism .

[0056] The basic principle of the ciphertext index of the method of the present invention is to simulate a lightweight B-Tree index structure by constructing a basic table structure of a group of databases, and this group of table structures is called a ciphertext index table. The characteristic of this lightweight B-Tree structure is that the organization of the index relationship only depends on the relationship between the nodes of each layer, and does not need to rely on the partial ordering relationship between the data to organize the data. This way is because there is no partial ordering relationship. , The attacker cannot an...

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Abstract

The invention provides a method for establishing, retrieving and maintaining indexes based on a lightweighted cipher text indexing structure without a partial ordering relation, wherein the structure can present a node relation in the indexes and is convenient to maintain and low in maintenance cost. Because data stored in the indexes are in a cipher text form and the partial ordering relation among the data does not exist, analysis is unavailable so that data safety is guaranteed. Based on the method for retrieving the cipher text indexes without the partial ordering relation, the cipher text data can be retrieved and positioned rapidly; and the method for maintaining the indexes can be used for effectively maintaining index data and the node relation, so that the accuracy of the index data in a concurrent operation environment is guaranteed.

Description

Technical field [0001] The invention relates to the field of computer data security, in particular to a method for establishing a ciphertext index for ciphertext data. Background technique [0002] With the rapid development of computer technology, the application of database has been very extensive and has penetrated into various fields. Government organizations, commercial institutions, and financial institutions all use database servers to store their important personnel information, trade records, market decision-making information and other sensitive data. The importance of these data is beyond doubt, it is related to the security of the country and the rise and fall of enterprises. Therefore, how to effectively ensure the security of the database system and realize the confidentiality, integrity, validity and availability of data has become an important subject for industry research. At present, the mainstream commercial databases used in China are mainly imported from ab...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30G06F21/60
Inventor 赵飞
Owner BEIJING ANHUA JINHE TECH
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