ZHANG Shun, YANG Liang, ZHANG Yuan, GAO Tiegang. A Bit Level Encryption Scheme Based on Hyper-chaotic System Combing with the Ideology of Central Dogma[J]. Chinese Journal of Electronics, 2018, 27(3): 595-602. doi: 10.1049/cje.2018.03.018
 Citation: ZHANG Shun, YANG Liang, ZHANG Yuan, GAO Tiegang. A Bit Level Encryption Scheme Based on Hyper-chaotic System Combing with the Ideology of Central Dogma[J]. Chinese Journal of Electronics, 2018, 27(3): 595-602.

# A Bit Level Encryption Scheme Based on Hyper-chaotic System Combing with the Ideology of Central Dogma

##### doi: 10.1049/cje.2018.03.018
Funds:  This work is supported by the Natural Science Foundation of Tianjin (No.16JCYBJC15700).
• Corresponding author: YANG Liang (corresponding author) was born in 1992, is a M.S. candidate in College of Software Nankai University, China. His current research interests include information security, reversible data hiding and multimedia security. (Email:2120140433@mail.nankai.edu.cn)
• Rev Recd Date: 2017-08-15
• Publish Date: 2018-05-10
• An image encryption scheme based on confusion and diffusion is proposed. In the proposed scheme, original images are transformed into other forms, such as binary streams and ‘hyper-image’, firstly. Then the confusion process is achieved by permutation on the pixel level, the binary bit level, and the ‘hyper-image’ level respectively. Moreover, the diffusion process is operated on the ‘hyper-image’ level by bitwise eXclusive or (XOR) calculation with random sequence generated by a hyper-chaotic system. Furthermore, the central dogma in molecular biology is utilized in the construction of hyper-image, which demonstrates its superiority. Both the theoretical analysis and the experimental results have demonstrated the efficiency and validity of the proposed scheme, and images can be encrypted sufficiently through the three-time permutation and the chaotic substitution.
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