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Plaintext related image encryption method based on PUD adaptive decomposition

A technology of plaintext image and encryption method, which is applied to image communication, countermeasures against encryption mechanism, and key distribution. It can solve the problems of low security, being cracked, and difficult to further improve the security and reliability of the algorithm, and achieve strong robustness. performance, high security and robustness

Active Publication Date: 2021-01-22
TAIYUAN UNIV OF TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since these transform domain-based encryption algorithms usually use fixed basis functions (trigonometric functions, wavelet functions) in the process of transforming images, the image encryption algorithms based on transform domain also have the risk of low security and easy to be cracked.
[0004] In order to design an image encryption method with strong security, it is difficult to further improve the security and reliability of the algorithm by encrypting images based on traditional transform domains (such as discrete FT transform, DCT transform, DWT transform, etc.)

Method used

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  • Plaintext related image encryption method based on PUD adaptive decomposition
  • Plaintext related image encryption method based on PUD adaptive decomposition
  • Plaintext related image encryption method based on PUD adaptive decomposition

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Embodiment Construction

[0038] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0039] Such as figure 1 As shown, the plaintext-related image encryption method based on PUD adaptive decomposition described in this embodiment includes the following steps:

[0040] Step 1) generation of pseudo-random number sequence:

[0041] Use the existing random number generator to generate a 512-bit pseudo-random number sequence;

[0042] Step 2) Decomposition of the plaintext image:

[0043] Using the PUD decomposition technology to decompose the original plaintext image, three parts are obtained, which are one two-dimensional component, two one-dimensional components and the average gray value of the image;

[0044] Step 3) the operation of image encryption:

[0045] For the two-dimensional components obta...

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Abstract

The invention relates to a plaintext related image encryption method based on PUD adaptive decomposition, and the method comprises the steps: carrying out the adaptive PUD decomposition of a plaintextimage, and carrying out the scrambling diffusion of a decomposed two-dimensional component. According to the method, the adopted encryption key is related to the plaintext, the obtained encrypted image can efficiently resist the attack of the selected plaintext and the attack of the selected ciphertext; meanwhile, the robustness in the aspects of filtering noise attacks, shearing attacks and differential attacks is high, and the security and robustness of the encrypted image are further improved. The method can be applied to the fields of image security and image secret communication.

Description

technical field [0001] The present invention relates to the technical field of image encryption, and more specifically relates to a plaintext-related image encryption method based on PUD adaptive decomposition. Background technique [0002] With the rapid development of computer network and communication technology, the use and exchange of multimedia content such as digital images, video sequences and audio signals is showing an explosive growth trend. And digital images as visual multimedia content have been widely used in many fields, including medical, commercial and military. For these applications, the transmission of digital images through public channels and storage on cloud platforms must ensure that the images are secure and can only be accessed by authorized institutions. Therefore, the security of digital images is becoming more and more important, and has become an urgent problem to be solved. [0003] Different from traditional text messages, digital images ha...

Claims

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Application Information

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IPC IPC(8): H04N1/32H04L9/08H04L9/00
CPCH04N1/32272H04L9/0869H04L9/002
Inventor 吴永飞刘西林岳俊宏周稻祥高佩婷李明
Owner TAIYUAN UNIV OF TECH
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