Image encryption method based on finite time synchronization of fractional order driven response system

A technology with limited time and encryption methods, which is applied in the direction of digital transmission systems, transmission systems, and countermeasures against encryption mechanisms, etc., can solve problems such as strong randomness, high complexity, and complex operations, and achieve security and confidentiality , strong anti-attack ability and large key space

Active Publication Date: 2021-10-26
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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Problems solved by technology

[0005] Aiming at the technical problems of complex operation, high time complexity and space complexity of the cryptographic system, and low security of the encryption technology existing in the existing im

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  • Image encryption method based on finite time synchronization of fractional order driven response system
  • Image encryption method based on finite time synchronization of fractional order driven response system
  • Image encryption method based on finite time synchronization of fractional order driven response system

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Embodiment Construction

[0073] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0074] Such as figure 1 As shown, an image encryption method based on finite time synchronization of fractional-order driven response system, by normalizing the image matrix and using the chaotic dynamics behavior of fractional-order complex systems with time-varying time-delay, it realizes three-dimensional The process of encrypting and decrypting color images. Owing to adopting the chaotic dynamics behavior of the fractional order complex system with time-v...

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Abstract

The invention provides an image encryption method based on finite time synchronization of a fractional order driving response system. The method comprises the steps of reading a three-dimensional color image to obtain a color component matrix; obtaining chaos signals based on a fractional order driving system, and carrying out resampling to obtain a discrete chaos sequence; arranging and recombining the discrete chaotic sequence according to a column mode to obtain a two-dimensional array, and normalizing the two-dimensional array to obtain a pseudo-random matrix; performing binary XOR operation on the color component matrix by using a pseudo-random matrix to obtain a color component matrix encrypted for the first time; performing scrambling operation on the color component matrix encrypted for the first time and a pseudo-random matrix to obtain a color component matrix encrypted for the second time; and performing equal-area mapping scrambling on the color component matrix encrypted for the second time to obtain a final encrypted image color component matrix. The method has the advantages of large key space, high sensitivity and high attack resistance, and can effectively ensure the security and confidentiality of the encrypted image.

Description

technical field [0001] The invention relates to the technical field of digital image encryption, in particular to an image encryption method based on fractional order drive response system finite time synchronization. Background technique [0002] The rapid popularization of the Internet has become an important symbol of the information age, and anyone can publish any information through the Internet at any time and anywhere. However, while facing a large amount of information sharing and convenience, it is also facing the fact that a large amount of data is leaked, tampered with and counterfeited. At present, how to ensure the security of information has become the key to research. Among them, image information is particularly important in information exchange. Due to the intuitiveness of its information transmission, it is becoming more and more popular on the Internet. At the same time, because some image information will involve personal privacy. , commercial secrets, a...

Claims

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Application Information

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IPC IPC(8): H04L9/00
CPCH04L9/001H04L9/002
Inventor 刘鹏李韫鎏余培照赵俊红徐明林栗三一孙军伟方洁刘娜杨飞飞
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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