An Anonymized Digital Watermark Embedding and Extraction Method

A technology of digital watermarking and watermark embedding, which is applied in electronic digital data processing, program/content distribution protection, instruments, etc. It can solve the problems of digital anonymization of data, and achieve the effect of protecting rights and interests and good concealment.

Active Publication Date: 2018-04-13
MR RAY CHENGDU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide an anonymized digital watermark embedding and extraction method to solve the problem that the existing watermark technology cannot anonymize data digitally

Method used

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  • An Anonymized Digital Watermark Embedding and Extraction Method
  • An Anonymized Digital Watermark Embedding and Extraction Method

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] First of all, the only and iconic data to be protected according to the need is the watermark information that needs to be embedded. For example, the user's ID number, time, etc.

[0041] figure 1 An embodiment of an anonymized digital watermark embedding method of the present invention is shown: an anonymized digital watermark embedding method, comprising the following steps:

[0042] Step 1: Perform watermark string generation processing on the watermark information to be embedded, randomly generate the salt required for the hash according to the size of the watermark string, and add sal...

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Abstract

The present invention relates to database security technology and data anonymization, in particular to an anonymized digital watermark embedding and extraction method, the embedding method includes determining the watermark information to be embedded, hash processing, hash calculation with salt, watermark index calculation and After the watermark is embedded, an anonymized dataset with a copyright mark is obtained. The extraction method includes reading the anonymized dataset, calculating the watermark index for each row of data, extracting the watermark, and after extracting all rows of data, the voting mechanism is used to restore the watermark Information, output the extracted watermark information. It realizes the embedding of digital watermark information while anonymizing data, which has good concealment, and protects the rights and interests of data publishers while ensuring that private data is not leaked. Supports dynamic release of data and multi-data source data release.

Description

technical field [0001] The invention relates to database security technology and data anonymization, in particular to an anonymized digital watermark embedding and extraction method. Background technique [0002] In recent years, people have been witnessing a data explosion. The analysis and mining of big data has greatly facilitated our lives. However, most of the analyzed data is proprietary and contains many personal or business interests. Sensitive information. Examples of sensitive data include patient records, special housing information, tax records, customer purchase records, mobile call detail records (CDRs), etc. The very sensitive nature of such datasets prohibits their direct disclosure. It needs to be processed and released with appropriate privacy protection technology. [0003] Digital watermarking technology is an effective means to realize the copyright protection of multimedia information in the network environment. With the widespread use of relational ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/16
CPCG06F21/16G06F21/1063
Inventor 陈瑞霞
Owner MR RAY CHENGDU TECH CO LTD
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