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A Digital Watermarking Method for Relational Database

A digital watermark and database technology, applied in the database field, can solve the problems of content confidentiality and privacy, data authenticity and integrity threats, and achieve the effects of resisting common attacks, high security, and large watermark capacity

Active Publication Date: 2022-05-06
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the threats of copyright protection, content confidentiality and privacy, and data authenticity and integrity faced by the existing database security, the present invention proposes a Chinese-based Digital Watermarking Method Based on Word Segmentation and Word Embedding

Method used

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  • A Digital Watermarking Method for Relational Database
  • A Digital Watermarking Method for Relational Database
  • A Digital Watermarking Method for Relational Database

Examples

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Embodiment

[0041] Example: such as figure 1 As shown, it is a schematic diagram of the overall functional structure implemented by the present invention, and the steps of the present invention include:

[0042] Step 1. The data in the original database is preprocessed. The data preprocessing includes the generation of optimal replacement words and virtual splitting of attribute columns.

[0043] Among them, the generation of optimal replacement words is performed on all tuples under each column attribute, including the following steps:

[0044] A. Take the attribute value of each tuple, execute the Chinese word segmentation program, get all the phrases that can be replaced, and number these phrases from 0 in the order of appearance; check whether there are synonyms during the Chinese word segmentation process, and if there are synonyms, it will be The synonym obtained in the word segmentation is used as the candidate value of the similar word, and the replaceable word and its tuple, att...

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Abstract

The invention relates to a digital watermarking algorithm of a relational database, which solves the threat problems of copyright protection, content confidentiality and privacy, and data authenticity and integrity faced by the existing database security. Processing; use the private key of the copyright owner of the database to convert the watermark plaintext into a binary sequence; execute the watermark embedding program in units of non-numeric attribute columns with each attribute value in natural language; publish the database table after embedding the watermark; When a copyright dispute occurs, it is necessary to extract the watermark from the database tables involved in copyright disputes, and use this as an effective proof of copyright ownership; according to the database owner’s personal private key, the key corresponding to the attribute column There are virtual split columns and embedding process operation records to complete watermark extraction. The present invention can be widely applied to the copyright protection of character database safety.

Description

technical field [0001] The invention relates to the field of databases, in particular to a digital watermarking method for relational databases. Background technique [0002] Copyright protection has become a focus in the field of intellectual property. The development of the network has brought faster channels and wider space for the development of culture. At the same time, it has become an unavoidable problem that intellectual property rights are more likely to be violated in the network. In the protection of intellectual property rights, due to the particularity that literary works are only composed of words, it is difficult to load property rights information, which brings certain difficulties to the protection of intellectual property rights. [0003] The Chinese invention patent application with the application number 201010232710.9: "Works Copyright Protection Law" discloses a copyright protection scheme for Chinese works, which is based on the Chinese information h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/16G06F40/284G06F40/289G06F16/28
CPCG06F21/16G06F40/284G06F40/289G06F16/284
Inventor 李文玲闫健恩许海燕张兆心谷杰铭张奕欣
Owner HARBIN INST OF TECH AT WEIHAI
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