摘要
针对传统加密算法密钥长、记忆困难、不易安全持有等特点,提出虹膜特征密钥提取和AES加密算法相结合的图像加密算法.该算法利用db2小波分解的虹膜区域,提取第三层的虹膜关键特征高频系数,通过使用随机映射函数生成一个192位的密钥.随后将该算法与经典的Arnold算法的同时应用于图像加密实验.实验结果表明,利用该算法得到的加密图像的安全性更高.
The encryption algorithm has disadvantages like the long key making memory difficult and uneasy safekeeping,which causes a potential threat to the information security.Based on the combination of iris feature key extraction and AES encryption algorithm,this paper proposes an image encryption algorithm,The algorithm uses DB2 wavelet decomposition of the iris region,extracting the third layer of the iris key features of high frequency coefficients,through the use of random mapping function to generate a 192 bit key.The algorithm and the classical Arnold algorithm are applied to image encryption experiments at the same time.Experimental results show that the security of the encrypted image is higher by using the algorithm.
作者
解瑞云
海本斋
XIE Ruiyun HAI Benzhai(Computer Science and Technology Department, H enan Institute of Technology, Xinxiang 453000, China College of Computer and Information Technology, Henan Normal University,Xinxiang 453007, China)
出处
《河南师范大学学报(自然科学版)》
CAS
北大核心
2016年第5期163-168,共6页
Journal of Henan Normal University(Natural Science Edition)
基金
国家自然科学基金(U1404602)
河南省高等学校重点科研项目(15B520006)
河南省科技攻关重点项目(162102310442)
河南师范大学青年科学基金(2014QK30)