Color image encryption method based on dynamic DNA and 4D chaos

An encryption method and color image technology are applied in the direction of secure communication through chaotic signals, encryption devices with shift registers/memory, image communication, etc., which can solve the problems of reducing the robustness of the encryption system and failing to meet high security. Achieve the effects of uniform histogram distribution, high security, and resistance to statistical analysis attacks

Active Publication Date: 2019-08-20
SICHUAN UNIV
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  • Abstract
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Problems solved by technology

The robustness of the encryption system will be reduced due to the changing position of the DNA diffusion; in addition, the encoding of DNA in the traditional DNA encryption method is static, and the simple improvement of t

Method used

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  • Color image encryption method based on dynamic DNA and 4D chaos
  • Color image encryption method based on dynamic DNA and 4D chaos
  • Color image encryption method based on dynamic DNA and 4D chaos

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Embodiment Construction

[0031] A typical embodiment of a color image encryption method based on dynamic DNA and 4D chaos of the present invention will be described in detail below, and the present invention will be further described in detail. It is necessary to point out here that the following examples are only used for further explanation of the present invention and cannot be understood as limiting the scope of protection of the present invention. Those skilled in the art have made some non-essential improvements to the present invention based on the above-mentioned content of the present invention. And adjustments still belong to the protection scope of the present invention.

[0032] The specific implementation of the method of the present invention is as follows:

[0033] (1) The image encryption process (such as figure 1 Shown) is divided into the following steps:

[0034] (I) Generation of initial secret key and mixing matrix:

[0035] (a) The image to be encrypted is denoted as M, and the origina...

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Abstract

The invention provides a color image encryption method based on dynamic DNA and 4D chaos, aiming at solving the technical problem of image encryption based on traditional static DNA. The method comprises: using 4D chaos to generate two groups of four chaos matrixes which respectively correspond to a DNA confusion operation and a dynamic DNA coding matrix of three channels of red, green and blue,and a rule matrix and a chaos matrix of a dynamic DNA diffusion operation of the three channels. Due to the fact that the initial parameters of the 4D chaos are determined by the Hash algorithm and the plaintext, the encryption method can resist plaintext selection attacks, and dynamic DNA encryption can be achieved. The method is high in robustness and good in safety.

Description

Technical field [0001] The invention relates to the field of information security technology and digital image processing, in particular to an image encryption method. Background technique [0002] Digital images have the essential characteristics of large data capacity, strong correlation between adjacent pixels, and high redundancy, which makes it difficult for traditional data encryption methods to work. Although a large number of image encryption algorithms have been proposed, they still face some new problems such as fast real-time encryption systems, security mechanisms for generating one-time keys, and strong resistance to various attacks. The image encryption method combining aliasing and DNA is one of the hotspots in recent years. DNA computing involves DNA confusion and diffusion. DNA obfuscation only changes the value of each DNA unit without changing its position, and DNA obfuscation alone cannot guarantee the security of its encryption system. Therefore, DNA confu...

Claims

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Application Information

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IPC IPC(8): H04L9/00H04L9/06H04L9/08H04N19/46
CPCH04L9/001H04L9/002H04L9/0643H04L9/0866H04N19/46
Inventor 王君吴春晓刘振涛
Owner SICHUAN UNIV
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