文章摘要
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
  
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 code  SHA-256  chaotic system  DNA sequence  encryption  anti-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).
作者单位
杨宏宇,王在明  
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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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