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Watermark tracing method for identity card data desensitization

A data desensitization and ID card technology, applied in the field of data security, can solve the problems of high error, poor non-numerical data support, and dependence on the database, etc., to achieve the effect of breaking away from dependence, improving credibility, and reducing errors

Active Publication Date: 2020-09-11
杭州美创科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention mainly solves the problems in the prior art that digital watermark traceability has a high error rate, traceability results are not convincing, and cannot be separated from the database; it provides a watermark traceability method for ID card data desensitization, and reduces errors through double guarantees of check digits and hit rates , the extracted watermark information can correspond to a data source. This method can improve the credibility of the traceability results, and does not use information related to the database so that the data does not need to be stored in the database. When suspicious data is found, the data can be used directly. Perform watermark traceability
Its purpose is to solve problems such as high errors, unconvincing traceability results, dependence on databases, and poor support for non-numeric data

Method used

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  • Watermark tracing method for identity card data desensitization

Examples

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Embodiment 1

[0061] A watermark traceability method for identity card data desensitization, such as figure 1 shown, including the following steps:

[0062] S1: Extract data from the data source, compare the data with ID card rules, find the ID card rule field in the data source, and desensitize according to the data desensitization rules.

[0063] Discover specified ID card information through the automatic discovery function of data desensitization, or specify the source of ID card information by adding a specific data desensitization source.

[0064] S11: Connect to the corresponding data source according to the data source information, obtain data from the data source and put it into a set, compare the ID card rules for each piece of data in the set, and obtain the ID card rule field.

[0065] S12: Desensitize the data that conforms to the ID card rules according to the data desensitization rules, perform data desensitization error processing on the non-compliant data, and exclude dirt...

Embodiment 2

[0101] A watermark traceability method for ID card data desensitization, using Chinese Unicode codes to correspond to a data source. The watermark information can be extracted with less data, and the data source can be found.

[0102] This embodiment is the same as the first embodiment except that the four watermark numbers are replaced by Chinese Unicode codes.

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Abstract

The invention discloses a watermark tracing method for identity card data desensitization. The problems that in the prior art, the digital watermark tracing error rate is high, the tracing result is poor in credibility and cannot be separated from a database are solved. The method comprises the following steps of S1, extracting data from a data source, finding out an identity card rule field in the data source, and performing desensitization; Ss2, acquiring a plurality of watermark numbers, adding a digital watermark mark to the desensitized data by using the watermark numbers, and calculatinga check bit; Ss3, importing the suspicious data into a memory, and filtering the data not added with the digital watermark mark according to the check bit of the data; Ss4, extracting digital watermark information according to the inverse process of adding the digital watermark mark; and S5, determining a data source according to the watermark number. One data source corresponds to a plurality ofwatermark numbers, so that the tracing result can find a specific data source, the credibility of the tracing result is improved, and the dependence on a database is avoided.

Description

technical field [0001] The invention relates to the field of data security, in particular to a watermark traceability method for ID card data desensitization. Background technique [0002] In view of the data leakage problem that often occurs in the current society, it often brings certain losses to some groups and enterprises. Finding the source of the leak and stopping the loss in time is an urgent problem to be solved. [0003] In the current digital watermarking technology, for the digital watermark of pure digital character string or numeric type, some methods are related to attribute information (ie, field information) in the database. Calculate the number corresponding to the current attribute value by using the attribute value, attribute name, user secret key and other information through a one-way hash function, then judge whether to add a watermark according to the divisible calculation, and then calculate the parity of the attribute value according to the parity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/16
CPCG06F21/16G06F21/1063
Inventor 马永杰闻建霞柳遵梁
Owner 杭州美创科技股份有限公司
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