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digital image encryption method based on a DES structure and DNA coding

A technology of digital images and encryption methods, which is applied in encryption devices with shift registers/memory, digital transmission systems, genetic models, etc., can solve the problems of complex calculation, many iterations of DES algorithm, and weak anti-cropping attack ability, etc. achieve good recovery

Active Publication Date: 2019-05-14
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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Problems solved by technology

[0005] Aiming at the technical problems that the traditional DES algorithm has many iterations, complex calculations, and weak ability to resist clipping attacks, the present invention proposes a digital image encryption method based on DES structure and DNA encoding, which has low computational complexity and has great impact on keys. Strong sensitivity, good anti-exhaustive attack, anti-noise attack ability and strong anti-cropping attack ability, can effectively resist statistical attacks

Method used

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  • digital image encryption method based on a DES structure and DNA coding
  • digital image encryption method based on a DES structure and DNA coding
  • digital image encryption method based on a DES structure and DNA coding

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Embodiment Construction

[0051] 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.

[0052] like figure 2 Shown, a kind of digital image encryption method based on DES structure and DNA coding, its steps are as follows:

[0053] Step 1: Convert the plaintext grayscale image of size M*N into a two-dimensional image matrix I, input the image matrix I into the SHA-256 algorithm, and obtain a 256-bit Hash value to form a binary sequence H.

[0054] The length and width of the plaintext grayscale image are M and N respectively, and the present in...

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Abstract

The invention provides a digital image encryption method based on a DES structure and DNA coding. The method is used for solving the problems that when a traditional DES encryption algorithm is applied to image encryption, operation is complex, and clipping attack resistance is poor. According to the method, the structure of the DES encryption algorithm is used for reference, and methods such as DNA encoding operation, ciphertext output selection and key verification are used, so that the problems of high computational complexity, inconvenience in key management and the like when a traditionalcharacter encryption algorithm is applied to digital image encryption are well solved. According to the method, the security of the ciphertext is verified by analyzing indexes such as information entropy, pixel change rate and image correlation of the ciphertext; The method has a very good recovery capability when being attacked, has a relatively large key space to resist exhaustive attacks, canalso resist statistical attacks, differential attacks, clipping attacks, noise attacks and the like, and can be widely applied to secure transmission of image information.

Description

technical field [0001] The invention relates to the technical field of image encryption, in particular to a digital image encryption method based on DES structure and DNA encoding. Background technique [0002] Digital image information has the characteristics of large amount of data and strong correlation between data, which makes it difficult for traditional encryption methods to encrypt image data. In modern society, the issue of information security affects all aspects of human production and life. The problem of information leakage faced by human beings is becoming more and more serious. How to effectively protect the safe transmission of information has become a hot research field. Encryption algorithms such as RSA and DES have been widely used in the encryption of text information, but with the progress of the semiconductor industry and computer science, human computing power has achieved rapid development. Traditional encryption algorithms face the risk of being cra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/06H04L9/00G06N3/12
Inventor 张勋才田二林凌丹王凌飞牛莹赵凯崔光照周航宇王延峰孙军伟焦洋洋
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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