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Image Encryption Method and Device Based on Cascade Equimodular Decomposition

An encryption method and image technology, applied in image coding, image data processing, computer security devices, etc., can solve problems such as increasing the complexity of the system

Active Publication Date: 2022-01-18
南方电网互联网服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing multi-image encryption method realizes a large-capacity image encryption transmission, it also increases the complexity of the system

Method used

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  • Image Encryption Method and Device Based on Cascade Equimodular Decomposition
  • Image Encryption Method and Device Based on Cascade Equimodular Decomposition
  • Image Encryption Method and Device Based on Cascade Equimodular Decomposition

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Embodiment Construction

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0046] The following describes the image encryption method and device based on cascaded equimodular decomposition according to the embodiments of the present invention with reference to the accompanying drawings. First, the image encryption method based on cascaded equimodular decomposition proposed according to the embodiments of the present invention will be described with reference to the accompanying drawings.

[0047] figure 1 It is a flowchart of an image encryption method based on cascade equimodulus decomposition in an em...

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Abstract

The invention discloses an image encryption method and device based on cascaded equimodulus decomposition, wherein the method includes: S1: encoding the image into a first quaternion matrix; S2: modulating the quaternion on the first quaternion matrix Number Gyrator transformation; S3: extract the first to fourth components, and combine the first and second components into the first complex matrix, and combine the third and fourth components into the second complex matrix; S4: to the second complex matrix Equimodulus decomposition to obtain the first matrix and the second matrix; S5: encode the first complex matrix and the second matrix into the second quaternion matrix, and repeat S2 to S4 to obtain the third complex matrix and the third matrix; S6: Encoding the third complex matrix and the third matrix into a fourth complex matrix; S7: Obtain ciphertext by performing truncation encoding on the fourth complex matrix. The method can greatly increase the capacity of images to be transmitted, and has high security at the same time, and can be applied to the security protection of image information.

Description

technical field [0001] The invention relates to the technical field of image encryption, in particular to an image encryption method and device based on cascade equimodular decomposition. Background technique [0002] Image has become an important medium for people to communicate because of its good intuitiveness and imagery. With the rapid development and continuous application of network communication and multimedia technology, a large number of images are transmitted, shared and used on the open Internet every day. However, these image information are vulnerable to attacks, causing information leakage or tampering. In order to protect the security of image information, researchers have proposed image encryption technology. [0003] At present, with the continuous enhancement of video and information transmission capabilities, traditional single image encryption has been difficult to meet the rapidly growing demand for big data. Therefore, multi-image encryption algorit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/60G06T9/00
CPCG06F21/602G06T9/00
Inventor 邵珠宏尚媛园丁辉赵晓旭刘铁张永祥苏佳
Owner 南方电网互联网服务有限公司