基于映射混沌加密和QR码的产品防伪研究-《计算机技术与发展》

文章信息/Info

Title:: Product Anti-counterfeit Research Based on Chaotic Encryption and QR Code

Keywords:: QR code anti-counterfeit; Logistic map chaotic encryption algorithm; Logistic chaotic sequence; encryption; decryption

摘要:: 为了实现基于QR码的产品标识防伪的要求,提出了一种基于Logistic映射混沌的QR码加密和解密算法.密钥参数μ取值接近4,x0∈[0,1],将Logistic迭代公式产生的混沌序列二值化,通过与原始信息的Unicode(或ASCII)编码异或,形成密文,从而实现对信息的加密,解密过程是加密的逆过程.由于选取Logistic迭代公式中密钥参数μ,x0的取值有无限多种可能性,理论上其加密安全性高,相比RSA,DES加密算法,该算法简单、执行效率高,实现防伪的同时不会破坏QR码图像结构

Abstract:: In order to realize the product identification security requirements based on the QR code,a QR code encryption and decryption algorithm based on Logistic map chaotic is proposed,the key parameterμvalue is close to 4, x0∈[0,1],and Logistic chaotic sequences generated by two values,then cipher text is formed by original information of the Unicode (or ASCII) coding XOR. The encryption and decryption is the inverse process. Because the selected Logistic iteration formula in key parametersμ,x0 value have an infinite variety of possibility theory,its encryption security is high,compared to RSA,DES encryption algorithm,this algorithm is simple,the efficiency of implementation is high,achieving the security,at the same time not damaging the QR code image structure