中国物理B ›› 2021, Vol. 30 ›› Issue (6): 60507-060507.doi: 10.1088/1674-1056/abdea3

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An image encryption algorithm based on improved baker transformation and chaotic S-box

Xing-Yuan Wang(王兴元), Huai-Huai Sun(孙怀怀), and Hao Gao(高浩)   

  1. School of Information Science and Technology, Dalian Maritime University, Dalian 116026, China
  • 收稿日期:2020-12-08 修回日期:2021-01-15 接受日期:2021-01-22 出版日期:2021-05-18 发布日期:2021-06-01
  • 通讯作者: Xing-Yuan Wang, Huai-Huai Sun E-mail:xywang@dlmu.edu.cn;2471054392@qq.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61672124), the Password Theory Project of the 13th Five-Year Plan National Cryptography Development Fund, China (Grant No. MMJJ20170203), the Liaoning Provincial Science and Technology Innovation Leading Talents Program Project, China (Grant No. XLYC1802013), the Key Research and Development Projects of Liaoning Province, China (Grant No. 2019020105-JH2/103), the Jinan City ‘20 universities’ Funding Projects Introducing Innovation Team Program, China (Grant No. 2019GXRC031), and the "Double First-rate" Construction Project ("Innovation Project"), China (Grant No. SSCXXM013).

An image encryption algorithm based on improved baker transformation and chaotic S-box

Xing-Yuan Wang(王兴元), Huai-Huai Sun(孙怀怀), and Hao Gao(高浩)   

  1. School of Information Science and Technology, Dalian Maritime University, Dalian 116026, China
  • Received:2020-12-08 Revised:2021-01-15 Accepted:2021-01-22 Online:2021-05-18 Published:2021-06-01
  • Contact: Xing-Yuan Wang, Huai-Huai Sun E-mail:xywang@dlmu.edu.cn;2471054392@qq.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61672124), the Password Theory Project of the 13th Five-Year Plan National Cryptography Development Fund, China (Grant No. MMJJ20170203), the Liaoning Provincial Science and Technology Innovation Leading Talents Program Project, China (Grant No. XLYC1802013), the Key Research and Development Projects of Liaoning Province, China (Grant No. 2019020105-JH2/103), the Jinan City ‘20 universities’ Funding Projects Introducing Innovation Team Program, China (Grant No. 2019GXRC031), and the "Double First-rate" Construction Project ("Innovation Project"), China (Grant No. SSCXXM013).

摘要: The algorithm is an image encryption algorithm based on the improved baker transformation and chaotic substitution box (S-box). It mainly uses the initial values and parameters of a one-dimensional logistic chaotic system as an encryption key. Specifically, in the image scrambling stage, the algorithm primarily uses an improved baker transform method to process the image. In the image diffusion stage, the algorithm first uses the chaotic S-box method to process the encryption key. Secondly, an exclusive OR (XOR) operation is performed on the image and the encryption key to initially diffuse the image. Finally, the image is again diffused using the method of ortho XOR. Simulation analysis shows that the algorithm can achieve good encryption effect, simple and easy implementation, and good security. In the digital image communication transmission, it has good practical value.

关键词: image encryption, improved baker transformation, chaotic S-box, chaotic sequence

Abstract: The algorithm is an image encryption algorithm based on the improved baker transformation and chaotic substitution box (S-box). It mainly uses the initial values and parameters of a one-dimensional logistic chaotic system as an encryption key. Specifically, in the image scrambling stage, the algorithm primarily uses an improved baker transform method to process the image. In the image diffusion stage, the algorithm first uses the chaotic S-box method to process the encryption key. Secondly, an exclusive OR (XOR) operation is performed on the image and the encryption key to initially diffuse the image. Finally, the image is again diffused using the method of ortho XOR. Simulation analysis shows that the algorithm can achieve good encryption effect, simple and easy implementation, and good security. In the digital image communication transmission, it has good practical value.

Key words: image encryption, improved baker transformation, chaotic S-box, chaotic sequence

中图分类号:  (Control of chaos, applications of chaos)

  • 05.45.Gg
05.45.Ac (Low-dimensional chaos) 07.05.Pj (Image processing)