基于改进AES算法的医院信息系统数据加密  

Data encryption of hospital information system based on improved AES algorithm

作　　者：赵粹芹 ZHAO Cui-qin(Xuancheng People’s Hospital,Xuancheng 242000,Anhui Province,China)

机构地区：[1]宣城市人民医院,安徽宣城242000

出　　处：《信息技术》2021年第7期133-138,共6页Information Technology

摘　　要：针对AES算法应用于医院信息系统存在的安全性差、计算量大的问题,提出了一种改进AES医疗数据加密方法。该方法利用不可约多项式构建最佳仿射变换生成新S盒,通过平方剩余算法实现密钥扩展,增强了加密算法安全性。为提高数据加解密效率,设计了AES算法并行化实现结构。实验结果表明,改进AES算法有效提高了医院信息数据加密的安全性,且并行化处理结构能够充分利用计算资源,提升运行效率。Regarding the problems of poor security and large amount of calculation in the application of AES algorithm in hospital information system,an improved AES medical data encryption method is proposed.The best affine transformation is constructed by irreducible polynomials to generate a new S-box.The key expansion is realized by square residue algorithm,which enhance the security of encryption algorithm.In order to improve the efficiency of data encryption and decryption,the parallel implementation structure of AES algorithm is designed.The experiment results show that the improved AES algorithm can effectively improve the security of hospital information data encryption,and the parallel processing structure can fully utilize the computing resource,and improve the operation efficiency as well.

关 键 词：数据加密 AES算法 仿射变换 密钥扩展 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]