无线电通信技术2017，Vol.43Issue(4)：22-25,39,5.DOI:10.3969/j.issn.1003-3114.2017.04.06
基于超混沌和改进AES的图像加密算法
Image Encryption Algorithm Based on Hyperchaos and Modified AES
摘要
Abstract
In this paper,a new encryption algorithm for gray images is proposed.In the first place,chaotic sequences are generated by using chaotic sequences generator of hyperchaotic Qi system,gray images are encrypted and binarized as well.Secondly,the random-like sequence generated by chaotic system is intercepted as the initial key of AES,which enhances the randomness and sensitivity of the secret key.In addition,in order to improve the randomness of round key to reinforce the security of the encryption algorithm,all round keys required within the round key and transform are obtained by using chaos algorithm.Ultimately,Subbyte,ShiftRow and Mix Column are accomplished.The simulation results indicate that this algorithm not only has a larger secret key space than the traditional AES,increasing exhaustive key attack difficulty of decryption,but also has non-corresponding plain text and cipher text,consequently,significantly enhancing the confidentiality of image information.关键词
超混沌/高级加密标准/图像加密Key words
hyperchaos/AES/image encryption分类
信息技术与安全科学引用本文复制引用
蒋爱平,齐可心,潘旭明,王宇,肖圣杰..基于超混沌和改进AES的图像加密算法[J].无线电通信技术,2017,43(4):22-25,39,5.基金项目
国家自然科学基金项目(61601174) （61601174）
