一种结合优化后AES与RSA算法的二维码加密算法  

A QR code encryption technique combining optimized AES and RSA algorithms

作　　者：刘海峰 刘洋[2] 梁星亮 LIU Hai-feng;LIU Yang;LIANG Xing-liang(School of Arts and Sciences,Shaanxi University of Science&Technology,Xi′an 710021,China;School of Electronic Information and Artificial Intelligence,Xi′an 710021,China)

机构地区：[1]陕西科技大学文理学院,陕西西安710021 [2]陕西科技大学电子信息与人工智能学院,陕西西安710021

出　　处：《陕西科技大学学报》2019年第6期153-159,共7页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅自然科学基础研究计划项目(2017JQ1026);陕西省教育厅专项科研计划项目(17JK0102)

摘　　要：针对目前的二维码信息安全发展现状,提出一种结合了改进后的AES和RSA算法的二维码加密算法。该算法在QR二维码编码之前实现加密,即对明文信息进行加密,利用改进后的AES算法先对明文信息进行对称加密,然后使用RSA非对称加密算法对于改进后的AES算法中使用到的参数进行加密生成参数密文,最后将信息密文和参数密文拼接后生成二维码并进行网络信道传输.该算法的特点是通过对AES算法密钥扩展和列混淆变换两方面的改进、又用中国剩余定理进行RSA解密算法的优化,减少了算法运行所消耗的时间,提高了安全性.该算法高效易行,结合两种算法优点,实现了对密钥的高效管理和对信息的安全保护,具有一定的推广和实用价值.According to the present situation of the two-dimensional code′s information security,a two-dimensional code encryption algorithm based on the improved AES and RSA algorithm is proposed in this paper.The algorithm encrypts before QR code encoding,which means it encrypts the plaintext information,using the improved AES symmetrical encryption algorithm to encrypt the plaintext information,then using the RSA asymmetric encryption algorithm to encrypts the improved AES algorithm′s parameters to generate the parameter ciphertext.Finally,the information ciphertext and the parameter ciphertext are spliced to generate two-dimensional code and transmit it in the network channel.This algorithm is characterized by the improvement of the key expansion and column obfuscation transformation of AES algorithm,and optimized of the RSA decryption algorithm with the Chinese remainder theorem,which reduces the running time of the algorithm and improves the algorithm′s security.This algorithm is efficient and easy to implement,combined with the advantages of the two algorithms,it can effectively manage the key and protect the security of the information.It has certain generalization and practical value.

关 键 词：改进AES RSA优化 二维码加密算法 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]