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Image encryption algorithm based on blocking DNA encoding and even scrambling

An encryption algorithm and coding technology, applied in image coding, image data processing, image data processing, etc., can solve the problem of low security

Active Publication Date: 2017-05-31
苏州琦峰尚科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, image encryption algorithms based on DNA coding methods mostly use fixed DNA coding rules to encode images, and the security is not high.

Method used

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  • Image encryption algorithm based on blocking DNA encoding and even scrambling
  • Image encryption algorithm based on blocking DNA encoding and even scrambling
  • Image encryption algorithm based on blocking DNA encoding and even scrambling

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Experimental program
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Embodiment Construction

[0031] 1. The initial value of the Logistic chaotic map x=0.683, y=0.172, μ 1 = 3.8 and μ 2 =3.9, the initial value of a=0.533, b=0.221 and c=0.898 of the Lorenz chaotic map, the initial value of the number of blocks B is 16, the initial value of the number of iterations clp1=10, clp2=10.

[0032] 2, figure 1 (a)- figure 1 (c) is an encryption and decryption effect diagram obtained by performing a simulation experiment on a 256×256 lung CT grayscale image. figure 1 (a) is the original grayscale lung CT image, figure 1 (b) is an encrypted image, figure 1 (c) is the decrypted image.

[0033] 3. figure 2 (a)- figure 2 (b) is the effect diagram of the gray histogram analysis of the lung CT image before and after encryption. Through comparison, it can be found that the pixel values ​​of the gray histogram before encryption are concentrated on some values, but the pixel distribution of the gray histogram of the image after encryption is relatively uniform, which shows that...

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Abstract

The invention discloses an image encryption algorithm based on blocking DNA encoding and even scrambling. The image encryption algorithm includes two portions: evenly scrambling pixel positions of images by combining a chaotic sequence generated by a Logistic chaotic mapping with Arnold cat conversion; scrambling pixel values of images by Lorenz chaotic mapping and DNA encoding. Finally, the two portions are combined to obtain the image encryption algorithm which can be used for encrypting square images.

Description

Technical field: [0001] The invention relates to a digital image encryption algorithm, in particular to an image encryption algorithm based on block DNA coding and uniform scrambling. Background technique: [0002] With the continuous improvement of the country's modernization, people pay more and more attention to the storage, transmission and application security of image data. The traditional encryption algorithms mainly include: DES algorithm, AES algorithm and elliptic encryption algorithm, etc., but the traditional encryption algorithm is Designed for text data, it is not suitable for image data with a huge amount of information. [0003] As the mainstream encryption technology in recent years, chaotic encryption technology is not safe for single use, so the encryption algorithm that combines chaos technology with other technologies has gradually been developed. Due to the characteristics of chaos theory, the algorithm mostly applies chaos technology to key generation....

Claims

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Application Information

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IPC IPC(8): G06T1/00G06T9/00
CPCG06T1/0021G06T9/001
Inventor 张健侯德智
Owner 苏州琦峰尚科技有限公司
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