| New chaotical image encryption algorithm based on Fisher–Yatess scrambling and DNA coding |
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| 引用本文： | 王兴元,张钧荐,张付臣,曹光辉.New chaotical image encryption algorithm based on Fisher–Yatess scrambling and DNA coding[J].中国物理 B,2019(4):121-130. |
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| 作者姓名： | 王兴元 张钧荐 张付臣 曹光辉 |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant Nos.61173183,61672124,61370145,and 11501064);the Password Theory Project of the 13th Five-Year Plan National Cryptography Development Fund,China(Grant No.MMJJ20170203);the China Postdoctoral Science Foundation(Grant No.2016M590850);the Scientific and Technological Research Program of Chongqing Municipal Education Commission,China(Grant No.KJ1500605) |
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| 摘 要： | Based on the Fisher–Yatess scrambling and DNA coding technology, a chaotical image encryption method is proposed. First, the SHA-3 algorithm is used to calculate the hash value of the initial password, which is used as the initial value of the chaotic system. Second, the chaotic sequence and Fisher–Yatess scrambling are used to scramble the plaintext,and a sorting scrambling algorithm is used for secondary scrambling. Then, the chaotic sequence and DNA coding rules are used to change the plaintext pixel values, which makes the ciphertext more random and resistant to attacks, and thus ensures that the encrypted ciphertext is more secure. Finally, we add plaintext statistics for pixel-level diffusion to ensure plaintext sensitivity. The experimental results and security analysis show that the new algorithm has a good encryption effect and speed, and can also resist common attacks.
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| 关 键 词： | Fisher–Yatess SCRAMBLING CHAOTIC sequence DNA CODING image ENCRYPTION |
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