Characteristic value comparison based content analysis method

A content analysis and eigenvalue technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as non-good design, and achieve the effect of reducing the probability of conflict, improving execution efficiency, and improving execution efficiency.

Inactive Publication Date: 2010-04-28
CHUNGHWA TELECOM CO LTD
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Problems solved by technology

[0003] This shows that above-mentioned existing mode still has many defi

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  • Characteristic value comparison based content analysis method
  • Characteristic value comparison based content analysis method
  • Characteristic value comparison based content analysis method

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Embodiment 1

[0020] see figure 1 , is a schematic flow chart of the content analysis method based on feature value comparison in the present invention. First, use the file feature construction function (2) to calculate the feature value of the confidential document to be protected (1), and construct the corresponding file feature file ( 3). In the content analysis stage of the confidential protection operation, after loading the feature value (4) to the corresponding data structure, the file feature comparison function (5) can be used to transfer the specified length data to the target file (6) based on the file feature data Content comparison. If there is data that matches the feature comparison, it is a file containing confidentiality, and the protection system can be allowed to carry out the relevant protection actions specified by the policy, otherwise it can be judged as a file that does not contain confidentiality.

[0021] see figure 2 , is a flow chart of file feature construct...

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Abstract

The invention discloses a characteristic value comparison based content analysis method, which comprises the following steps: firstly, calculating the characteristic value of a confidential file to be protected, and constructing a corresponding data characteristic file; and later, comparing data contents with fixed length for a suspicious file by using the characteristic data of the file at the content analysis stage of confidential protection operation, wherein if the data accords with the characteristic comparison, the suspicious file is a file containing confidentiality, and the related protection operation appointed by a policy is performed by a protection system, otherwise, the suspicious file is judged as a file which does not contain confidentiality. By improving the confidentiality protection field based partial file comparison technology and using a method for cutting data space, the comparison efficiency and precision of large-sized files are promoted, and the adjustment of related parameters during data comparison is performed according to the length of the target file so as to meet two difficult requirements of confidentiality identification rate and system efficiency.

Description

technical field [0001] The present invention relates to a content analysis method based on characteristic value comparison, in particular to a fast and accurate content analysis method using partial file comparison technology. Background technique [0002] In the existing confidentiality protection system, some file comparison methods used in content analysis must face the dilemma of confidentiality identification rate and system performance. A more accurate confidential identification function will generate the most data comparison operations and cause an impact on system performance. On the contrary, if the performance of content analysis is pursued, it will be difficult to take into account the identification rate of confidential data. And because the partial file comparison technology deals with the complexity problem of exponential growth, when the length of the confidential sample data or the target file increases, the system performance will face the predicament of ra...

Claims

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Application Information

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IPC IPC(8): G06F17/27G06F17/22
Inventor 张明哲徐克华张保忠刘灿雄
Owner CHUNGHWA TELECOM CO LTD
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