Journal of Jilin University(Engineering and Technology Edition) ›› 2021, Vol. 51 ›› Issue (3): 1055-1059.doi: 10.13229/j.cnki.jdxbgxb20200655

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Double chaos identifiable tampering image encryption method based on blockchain technology

Shu-tao SHEN(),Zha-xi NIMA   

  1. School of Information Science and Technology，Tibet University，Lhasa 850012，China
  • Received:2020-08-27 Online:2021-05-01 Published:2021-05-07

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Abstract:

Because the existing methods fail to consider the problem of poor anti difference， the quality of image encryption is reduced and the security performance is poor. In order to effectively solve the above problems， combined with the blockchain technology， a dual chaotic recognizable tamper image encryption method based on blockchain technology is designed and proposed. Kawakami hyperchaos are used to form hyperchaotic sequences for image pixel replacement. Combined with blockchain technology， the initial value of 3D Bao system is formed. The encryption sequence is formed by using plaintext pixel value and Bao system. The encryption sequence is replaced and diffused by the encryption sequence， which effectively realizes the encryption of double chaotic recognizable tamper image. Simulation results show that the proposed method can effectively improve the quality of image encryption and enhance the encryption effect.

Key words: computer application, blockchain technology, double chaos, recognizable tampered image, plaintext pixel value

CLC Number: 

  • TP393

Fig.1

Classification of chaotic systems"

Fig.2

Experimental sample image"

Fig.3

Comparison of encryption quality of different methods"

Table 1

Comparison results of ciphertextentropy of different methods"

方法密文熵值
本文方法8.893
基于超混沌系统的图像加密算法8.841
基于交叉混沌映射的小波域图像加密算法8.012
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