| 杨宏宇,王在明.基于SHA-256和DNA序列的彩色二维码混沌加密方法[J].,2017,57(6):629-637 |
| 基于SHA-256和DNA序列的彩色二维码混沌加密方法 |
| Color two-dimensional code chaotic encryption method based on SHA-256 and DNA sequence |
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| DOI：10.7511/dllgxb201706012 |
| 中文关键词:彩色二维码SHA-256混沌系统DNA序列加密抗攻击 |
| 英文关键词:color two-dimensional codeSHA-256chaotic systemDNA sequenceencryptionanti-attack |
| 基金项目:国家科技重大专项资助项目(2012ZX03002002)；国家自然科学基金资助项目(61179045)；中国民航科技基金资助项目(MHRD201205)；中央高校基本科研业务费专项资金资助项目(3122014D033). |
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| 中文摘要: |
| 为解决彩色二维码易伪造、易携带病毒、抗攻击能力弱等问题，提出一种彩色二维码混沌加密方法．该方法利用Lorenz混沌系统产生索引置乱二维码像素值，采用SHA-256生成加密密钥及Lorenz混沌系统初始值．用DNA序列置换像素值矩阵，将RGB灰度矩阵合成为加密彩色二维码．对该方法的密钥空间、密钥灵敏度、信息熵、抗差分攻击、抗统计攻击和相关性进行了实验验证和分析．实验结果表明，该方法具有较好的伪随机性、防伪造性和抗攻击性． |
| 英文摘要: |
| In order to solve the problem that color two-dimensional code is easy to forge, easy to carry the virus and its anti-attack ability is weak, a color two-dimensional code chaotic encryption method is proposed. The method uses Lorenz chaotic system to generate the index to scramble the two-dimensional code pixel values, and SHA-256 to generate the encryption key and Lorenz chaotic system initial value. It replaces the pixel value matrix with the DNA sequence, and synthesizes the RGB gray-scale matrix into an encrypted color two-dimensional code. The key space, key sensitivity, information entropy, anti-differential attack, anti-statistic attack and correlation of this method are experimentally verified and analyzed. Experimental results demonstrate that this method has good pseudo-randomness, anti-forgery and anti-attack performance. |
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