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Format-preserving data desensitization method

A technology of data desensitization and format retention, which is applied in electronic digital data processing, special data processing applications, instruments, etc., can solve the problems of not providing historical data processing mechanism, affecting data accuracy, data desensitization, etc., to ensure data protection. The effect of security, improving encryption efficiency, and concise processing logic

Inactive Publication Date: 2016-03-23
TIANJIN JIANING KUNXIANG TECH CO LTD
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Problems solved by technology

[0008] The present invention solves the problem that the existing protection method for sensitive data of customers may lose data during the data association operation, which seriously affects the accuracy of the data. Since the algorithm adopted is too simple, it is easy to crack, and after the key is leaked, it does not provide a An effective historical data processing mechanism, and then propose a format-preserving data desensitization method

Method used

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Embodiment Construction

[0065] In the present invention, the 24 unit coding intervals of B0~C7 are used as the A coding area, the 24 unit coding intervals of C8~DF are used as the B coding area, and the 24 unit coding intervals of E0~F7 are used as the B coding area. C code region.

[0066] In the GBK equal-length encryption algorithm, English and numbers are unified to form a single-character area, while Chinese characters are used as a wide-character area. Both the single-character area and the wide-character area encryption adopt the "three-segment mapping" method. The "three-segment mapping" method is as follows: first consider Chinese characters, and consider dividing the GB2312 Chinese code set into three segments of equal length A, B, and C. That is, the 72 unit intervals are divided into 3 coding regions, and each coding region contains 24 unit intervals. Since the coding distribution structure between each sub-district is similar, the structures of the three coding areas A, B, and C are sim...

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Abstract

The invention discloses a format-preserving data desensitization method, which relates to a data desensitization method, in particular to a format-preserving data processing method. The method aims to solve the problems that data accuracy is seriously affected since data missing happens when a traditional protection method of client sensitive data carries out a data association operation, an algorithm is easy in cracking since the adopted algorithm is too simple and no effective historical data processing mechanism is provided after a key is exposed. A GB2312 Chinese character set is divided into 72 isometric unit intervals on the basis of the coding structure of the GB2312 Chinese character set within a range of B0A0, and the code distribution of each unit interval is the same. The method comprises the coding structure of the GB2312 Chinese character set, a GBK (Guo-Biao Kuozhan) isometric encryption algorithm, a GBK isometric decryption algorithm, a number scrambling algorithm and a number descrambling algorithm. The method belongs to the field of computer software.

Description

technical field [0001] The invention relates to a data desensitization method, in particular to a format-preserved data processing method, which belongs to the field of computer software. Background technique [0002] The mobile business analysis system stores a large amount of data, including a large amount of customer sensitive data. In order to effectively protect customer sensitive data and avoid disputes caused by data leakage, it is necessary to protect customer sensitive data and implement different measures for different data. There are two types of protection: [0003] 1. For customer sensitive data of digital type, such as mobile phone number, use the method of transforming the last n digits of the number for mapping to generate new numbers. [0004] 2. For customer sensitive data with Chinese characters and letters, part of the information is encrypted using the DES encryption algorithm. [0005] Although the above two solutions protect the sensitive data of cus...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/254
Inventor 董宁
Owner TIANJIN JIANING KUNXIANG TECH CO LTD
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