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Multi-image encryption method based on 3D scrambling model and chaos

An encryption method and multi-image technology, applied in the direction of secure communication through chaotic signals, image communication, and secure communication devices, can solve problems such as weak security and low encryption efficiency, and achieve security protection, security improvement, and secure encryption effect of effect

Active Publication Date: 2021-09-21
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Purpose of the present invention: Aiming at problems such as weak security or low encryption efficiency of existing multi-image encryption methods, a multi-image encryption method based on three-dimensional scrambling model and chaos is proposed

Method used

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  • Multi-image encryption method based on 3D scrambling model and chaos
  • Multi-image encryption method based on 3D scrambling model and chaos
  • Multi-image encryption method based on 3D scrambling model and chaos

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Embodiment Construction

[0034] The following figures and examples with reference to specific embodiments of the process of the present invention will be described in further detail.

[0035] figure 1 It is a flowchart of an encryption method.

[0036] Using programming software Matlab R2016a, select figure 2 9 of a size of 512 × 512 image, as shown in the original image. According to the present method, Alice detailed original image encryption process are described below.

[0037] Step 1: generating chaotic sequence: Order of the original image 9 I 1 , I 2 , ..., I 9 ; Initial value of the selected PWLCM z 0 1 = 0.2, and parameters 03921568627451 p 1 = 0.190196078431373, Alice iterations of the map 512, a chaotic sequence can be obtained Z 1 = { z i 1 } 512 ; Using Equation (1) can be calculated to give R 1 = { r i 1 } 512 ; Likewise, she is using the initial value PWLCM z 0 2 = 0.239215686274514 and parameters p 2 = 0.378431372549021, iterations of the map 512, a chaotic sequence can have additiona...

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Abstract

The invention discloses a multi-image encryption method based on a three-dimensional scrambling model and chaos, which belongs to the field of information encryption. At present, network batch image transmission and storage become more and more frequent, in order to protect the security of multiple interactive image content, the present invention proposes a multi-image encryption method based on three-dimensional scrambling model and chaos. Inspired by the Rubik's Cube game, based on the definition of row scrambling, column scrambling and inter-graph scrambling, a three-dimensional image scrambling model is established. First, using the 3D scrambling model to k Pixel scrambling of the original image; then, using chaos, XOR (exclusive OR, XOR) operation is performed on the scrambling result to generate k An encrypted image. Experiments show that the algorithm can encrypt multiple interactive images at the same time, and the algorithm has good encryption effect, large key space, strong key sensitivity, high security and high efficiency.

Description

Technical field [0001] The present invention relates to an information encryption technique, and more particularly to a multi-image encryption method. Background technique [0002] Under the era of big data, whether it is a military system, e-government and financial system, or daily life, a huge image information is generated every day, in order to ensure that the content of this information is not stolen, image encryption technology has caused extensive research and industry. focus on. Multi-image encryption is a new multimedia security technology, with efficient features, gradually causing attention. Some multi-image encryption methods have been proposed. Some of these methods have been deciphered, and some have weak safety, and some have low efficiency, and some encrypted image is limited, and it is difficult to satisfactorily. [0003] Inspired by the Rubik's Cube Game, the three-dimensional chaos model of the image is established on the basis of defining the inner line chao...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00H04L9/08H04N1/32
CPCH04L9/001H04L9/0869H04N1/32272
Inventor 张晓强王雪松程玉虎
Owner CHINA UNIV OF MINING & TECH
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