基于Ising模型的QR码加密算法  

Encryption algorithm for QR code based on Ising model

作　　者：周庆[1] 黄党志[1] 

机构地区：[1]重庆大学计算机学院,重庆400044

出　　处：《计算机应用》2013年第10期2861-2864,共4页journal of Computer Applications

基　　金：国家自然科学基金资助项目(61003246)

摘　　要：快速反应码(QR)二维条形码在通信时存在安全隐患,为此提出了一种加密算法。伊辛(Ising)模型具有矩阵形式,在形式上与QR码相同,且其状态变换过程支持并行计算。基于Ising模型的变换规则生成加密矩阵,然后结合QR码的编码原理计算出QR码的密文。实验结果证实该算法具有良好的随机性和密钥敏感性。该算法简单、安全、高效,可用于QR码的安全保密通信。There is a potential security risk in the communication process by using QR （ Quick Response） code. This paper, therefore, proposed an encryption algorithm. Ising model has a matrix form, in which it is same with QR code. and its process of state change supports parallel operation. An encryption matrix was generated according to the model＇ s change rule, and then the ciphertext of QR code was produced, using the matrix and combining coding theory of the code. It was proven by the experiments that the algorithm did well in terms of randomness and sensitivity of key. With its simplicity, security and high efficiency, it could be applied to the secure communication for QR code.

关 键 词：快速反应码 信息加密 加密算法 条形码 伊辛模型 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]