基于混沌序列的医院无纸化办公网络自适应加密算法  

Adaptive Encryption Algorithm for Hospital Paperless Office Network Based on Chaotic Sequence

作　　者：李星 闫国涛[1] LI Xing;YAN Guotao(Department of Information Office,Handan Central Hospital,Handan 056008,China)

机构地区：[1]邯郸市中心医院信息科,河北邯郸056008

出　　处：《吉林大学学报（信息科学版）》2023年第5期938-944,共7页Journal of Jilin University（Information Science Edition）

基　　金：2021年度河北省医学科学研究基金资助项目(202111686)。

摘　　要：由于受医院网络自身稳定性的影响,导致无纸化办公网络数据易遭受攻击,为此提出基于混沌序列的医院无纸化办公网络自适应加密算法。通过随机数自动生成密匙,利用三维混沌系统生成混沌序列,产生置乱、分组的密匙序列。基于服务期望设计节点调度算法调度医院无纸化办公网络节点,确保密匙加密时能调度到合适的网络节点。通过云存储与改进背包算法实现医院无纸化办公网络的自适应加密处理。在某医院无纸化办公网络中选取文字、图像以及视频3种数据进行测试。测试结果表明,加密后密文呈现数字状态,不容易引发攻击者的注意;3种数据密文与明文之间的均方误差均较大,最大为258.63;加密后3种数据的数据相关性均大幅减弱,说明该算法能破坏数据原本的相关性,具有良好的网络数据加密能力。Affected by the stability of the hospital network,the data of paperless office network data is vulnerable to attack.Therefore,an adaptive encryption algorithm based on chaotic sequence is proposed.The key is automatically generated by random numbers,and the chaotic sequence is generated by three-dimensional chaotic system to generate the scrambled and grouped key sequence.Based on the service expectation,a node scheduling algorithm is designed to schedule the nodes of hospital paperless office network to ensure that the key encryption can be scheduled to the appropriate network nodes.Through cloud storage and improved knapsack algorithm,the adaptive encryption of hospital paperless office network is realized.In the paperless office network of a hospital,text data,image data and video data are selected for testing.The test result shows that the encrypted ciphertext presents a digital state,which is not easy to attract the attention of attackers.The mean square error between the ciphertext and plaintext of the three kinds of data is large,up to 258.63.The data correlation of the three kinds of data after encryption is greatly weakened,which shows that the design algorithm can destroy the original correlation of the data and has good network data encryption ability.

关 键 词：混沌序列 密匙序列 节点调度 医院无纸化办公 改进背包算法 网络自适应加密 

分 类 号：TP399[自动化与计算机技术—计算机应用技术] TN47[自动化与计算机技术—计算机科学与技术]