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Multi-image encryption menthod based on DNA encoding and Chenchao chaos

An encryption method and multi-image technology, which can be used in secure communication through chaotic signals, image communication, digital transmission systems, etc., can solve the problems of low encryption efficiency and weak security, and achieve enhanced security, high security, and key encryption. large space effect

Inactive Publication Date: 2018-09-11
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the present invention: Aiming at problems such as weak security or low encryption efficiency of the existing multi-image encryption method, a multi-image encryption method based on DNA coding and Chenchao is proposed

Method used

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  • Multi-image encryption menthod based on DNA encoding and Chenchao chaos
  • Multi-image encryption menthod based on DNA encoding and Chenchao chaos
  • Multi-image encryption menthod based on DNA encoding and Chenchao chaos

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Embodiment Construction

[0036] The implementation process of the present invention will be further described in detail below in conjunction with specific drawings and examples.

[0037] figure 1 is the encryption flowchart of this method.

[0038] The programming software used is Matlab R2014b, select figure 2 The four images with a size of 512×512 are shown as the original interactive images. Using this method, the specific process of encrypting the original interactive image is described as follows:

[0039] 1. Arrange 4 images vertically to generate a large image, and randomly select a DNA encoding method, such as DNA encoding method 1, to encode the original interactive image with DNA;

[0040] 2. Alice randomly selects the control parameters and initial values ​​of Chao Chen’s chaotic system as follows: a = 35, b = 7, c = 12, d = 3, k = 0.6 and the initial value x 0 = 8.036, y 0 = 0.999, z 0 = 16.372, q 0 = 12.228, producing 4 chaotic sequences;

[0041] 3. Sort the g...

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Abstract

The invention discloses a multi-image encryption method based on DNA encoding and Chenchao chaos, and belongs to the field of information encryption. At present, the network batch image transmission and storage become more and more often in daily life, the invention provides the multi-image encryption method based on DNA encoding and Chenchao chaos protecting the content security of multiple interacted images. The method comprises the following steps: firstly performing DNA encoding on k images, and forming a big image; secondly, scrambling the bit image by using chaos sequences produced by using the Chenchao chaos; thirdly, performing the DNA computation on the scrambled big image and the chaos sequence so as to accomplish the diffusion; and finally performing DNA decoding on a diffusionresult to obtain k encrypted images. The experiment shows that the algorithm can simultaneously encrypt multiple interacted images, the secret key space is large, the secret key sensitivity is strong,and the security is high.

Description

technical field [0001] The invention relates to an information encryption technology, in particular to a multi-image encryption method. Background technique [0002] In the era of big data, whether it is military systems, e-government and financial systems, or daily life, huge image information is generated every day. In order to ensure that the content of these information is not stolen, image encryption technology has aroused widespread interest in scientific research and industry. focus on. Multiple-image encryption (MIE), as a new multimedia security technology, has the characteristics of high efficiency, and gradually attracts the attention of researchers. Researchers have proposed some multi-image encryption methods. Some of these methods have been deciphered, some have weak security, some have low efficiency, and some have problems such as limited number of encrypted images, which are unsatisfactory. [0003] In view of this, in order to improve the security of the...

Claims

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Application Information

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IPC IPC(8): H04N1/32H04N1/44H04L9/00
CPCH04N1/32272H04L9/001H04N1/4486
Inventor 张晓强王清明李国庆
Owner CHINA UNIV OF MINING & TECH
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