应用于QR码信息加密的RC4改进算法  

Improved RC4 Algorithm Applied in QR Code Information Encryption

作　　者：周文倩[1] 马燕[1] 李顺宝 张相芬[1] 张玉萍[1] 

机构地区：[1]上海师范大学信息与机电工程学院,上海200234

出　　处：《计算机工程》2015年第8期105-109,共5页Computer Engineering

基　　金：国家自然科学基金资助项目(61373004)

摘　　要：快速响应矩阵(QR)码的广泛应用在很大程度上提高了社会便捷性,这也使得其内部信息的安全性变得至关重要。为实现对QR码信息内容的保护,设计改进的RC4算法,通过增加自我检错步骤来抵御错误引入攻击,同时结合混沌算法增强伪随机生成序列的随机性,从而提高QR码图像使用的安全性和可靠性。利用2种标准性能测试方法,通过Visual C++进行测试,结果表明,改进算法在安全性和可靠性两方面都能较好地满足QR码信息加密的要求。The widely use of Quick Response（QR） code has improved social convenience to a large extent so that the security of its information becomes more significant.In order to realize the protection of QR code,a new encryption method is proposed.According to the shortages of traditional RC4 algorithm,by adding the self-error detection phase,it resists the fault induction attack,and improves the randomness of the Pseudo-random Generation（PGR） phase of the RC4 by adding chaos algorithm.These two are combined into improved RC4 algorithm.Moreover,it can be applied in QR code information encryption to improve its security and reliability.It tests the improved algorithm through two kinds of methods,the results show that the improved RC4 algorithm can satisfy the requirements of QR code in security and reliability well.

关 键 词：快速响应矩阵码 RC4算法 自我检错 混沌算法 信息加密 伪随机序列 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]