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Image encryption method and device based on joint zero-watermark embedding

An encryption method and zero watermark technology, applied in the field of information security, can solve the problems of privacy leakage, illegal plagiarism, etc.

Active Publication Date: 2019-07-19
HUBEI ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, what follows is that the problems of privacy leakage and illegal plagiarism in the process of digital image and other multimedia data transmission are also intensified. Therefore, how to further improve the security of image information transmission process is an important research topic for those skilled in the art.

Method used

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  • Image encryption method and device based on joint zero-watermark embedding
  • Image encryption method and device based on joint zero-watermark embedding
  • Image encryption method and device based on joint zero-watermark embedding

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Experimental program
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Embodiment approach

[0087] As an implementation manner, the key matrix C can be obtained by the formula C(i+1)=mod(mod(sp(mod(C(i)×cr1,M)+1)×10 14 ,256)+C(i)-K(i),2 8 ), where the initial value C(0) is cr2, and K(i) is a set of random numbers generated by random seeds, and its length is 32.

[0088] It should be noted that the secret key matrix C in this embodiment can be generated based on the approximate components, or can be generated from any of the horizontal detail components, vertical detail components, and diagonal detail components, which is not limited in this implementation , in addition, the key matrix mentioned in this embodiment is the key matrix C generated above.

[0089] Step S140, process each of the decimal matrices to obtain 4 first decimal vectors, and sort the vector elements in each of the first decimal vectors, and determine the position of each vector element after sorting before sorting The position in the first decimal vector is described to obtain 4 first position ve...

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Abstract

The embodiment of the invention provides an image encryption method and apparatus uniting zero watermark embedding. According to the method, digital images are used as research objects, and zero watermark embedding and chaotic encryption are achieved based on the wavelet domain. Due to the application of the encryption technology, privacy leakage, illegal plagiarism and other problems occurring inthe propagation process of the digital images can be effectively avoided, and the security of the image information in the propagation process is improved; and due to the application of the zero watermark embedding technology, decrypted images can be applied to authorized users, continuous monitoring is performed, and the copyright authentication of the digital images can be conveniently achieved.

Description

technical field [0001] The present invention relates to the technical field of information security, in particular to an image encryption method and device combined with zero watermark embedding. Background technique [0002] The inventors have found through research that with the rapid development of communication technology and Internet technology, social networks can provide digital image sharing services for terminals in any place at any time. But what follows is that the problems of privacy leakage and illegal plagiarism in the process of digital image and other multimedia data transmission are also intensified. Therefore, how to further improve the security of image information transmission process is an important research topic for those skilled in the art. Contents of the invention [0003] In view of this, the present invention provides an image encryption method and device based on wavelet domain-based joint zero-watermark embedding, which can effectively solve t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/32H04L9/00
CPCH04L9/001H04N1/3217H04N1/32272
Inventor 叶从欢熊曾刚王光伟张学敏徐方刘振卢佳杰
Owner HUBEI ENG UNIV