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Dynamic watermark embedding and verifying method and system and dynamic watermark processing system

A watermark embedding and watermarking technology, applied in the field of data security, can solve the problems of low efficiency and security, and achieve the effects of reducing storage costs, low damage resistance, and reducing management costs

Active Publication Date: 2019-05-10
BEIJING SANSEC TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to meet the latter application scenario, the existing watermarking technology solutions generate different watermarks for binding user identities, and adopt the method of storing unique watermark rules or entries for different users one by one. Although this method is simple , but there are problems of low efficiency and safety

Method used

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  • Dynamic watermark embedding and verifying method and system and dynamic watermark processing system
  • Dynamic watermark embedding and verifying method and system and dynamic watermark processing system

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Embodiment Construction

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0032] figure 1 A flow chart of a dynamic watermark embedding method provided by an embodiment of the present invention, such as figure 1 As shown, the method includes:

[0033] 110. Determine and store watermark information, where the watermark information includes user binding information and corresponding data dictionary, mapping method, and watermark embedding ratio;

[0034] Specifically, the user's binding information refers to the information used to distinguish different users to bind and generate different watermark data, which can be the serial number of the transaction record, user key, user ID or a combination of several items; Binding information, can generate different watermark data sets, and can id...

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Abstract

The invention relates to a dynamic watermark embedding and verifying method and system and a dynamic watermark processing system. The dynamic watermark embedding method comprises the following steps:determining and storing watermark information; generating a watermark original image conforming to the watermark embedding proportion by utilizing the binding information; mapping the watermark original image to a data dictionary according to a mapping mode to obtain watermark data; and embedding the watermark data into the original data set. When dynamic watermark verification is carried out, obtaining watermark information corresponding to the to-be-verified data set, and obtaining to-be-verified watermark data according to a method which is the same as an embedding method; performing matching query in the to-be-verified data set according to the to-be-verified watermark data, and counting the proportion of the matching passing amount to the to-be-verified data set data amount; and judging that the watermark data to be verified is verified successfully. According to the invention, identity binding and watermark hiding, low damage and attack resistance are realized, and the managementcost is reduced; And watermark data does not need to be stored, so that the storage cost is greatly reduced.

Description

technical field [0001] The invention relates to the field of data security, in particular to a dynamic watermark embedding and verification method and system and a dynamic watermark processing system. Background technique [0002] Digital watermarking technology is a kind of information hiding technology. It embeds some identification information directly into the digital carrier (including multimedia, documents, software, etc.) without affecting the use of the original carrier, and it is not easy to be detected. Through these embedded information, the purposes of confirming the copyright owner, proving whether the carrier has been tampered with, and tracking the leaking user can be achieved. Early digital watermarking technology research mainly focused on image and audio multimedia watermarking; in recent years, the realization of data watermarking has received more and more attention because of protecting information security, realizing anti-counterfeiting traceability and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/16
Inventor 庄子迪党美闫炳豪刘会议
Owner BEIJING SANSEC TECH DEV
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