嵌入式异构物联网密文数据动态捕获方法  

Embedded Heterogeneous Internet of Things Ciphertext Data Dynamic Capture Method

作　　者：李波 聂增丽 畅君元[2] LI Bo;NIE Zeng-li;CHANG Jun-yuan(Chongqing Institute of Engineering,Chongqing 400056,China;Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆工程学院,重庆400056 [2]重庆邮电大学,重庆400065

出　　处：《计算机仿真》2021年第2期282-286,共5页Computer Simulation

基　　金：2019年重庆市“一流专业建设”支持项目(渝教高发{2019}7号);2019年重庆市高等教育教学改革研究项目(192049);重庆市教育科学规划课题(2018-GX-376);重庆市教育委员会科学技术研究项目(KJQN201901903);重庆工程学院教育教学改革研究项目(JY2017205)。

摘　　要：传统物联网密文数据捕获方法的误差较高,捕获时间过长。为此,对嵌入式异构物联网密文数据动态捕获方法进行优化。通过小波变换平移处理异构物联网初始数据,得到初始数据及其噪声关联性;根据阈值滤除噪声系数,实现小波系数重构;采用簇数据样本集合平方误差和推算出类别集合,利用映射函数对最小二乘支持向量机实施变换;应用拉格朗日乘子创建拉格朗日乘函数,获得对偶优化问题的约束条件;结合对称加密算法与公钥加密算法对数据加密;根据异构物联网密文数据接收信号描述,得出积分累计后输出;利用局部相干积累法处理密文数据信号,完成线性计算,依据非相干积累捕获到密文数据。仿真结果表明,上述方法不仅接收流量大,而且速度较快,具有理想的动态捕获性能。Traditionally,the method has high error and long acquisition time.Therefore,a dynamic acquisition method of ciphertext data in embedded heterogeneous Internet of things was optimized.The initial data in heterogeneous Internet of things were processed by wavelet transform,and then the correlation between initial data and noise was obtained.According to the threshold value,noise coefficient was removed and the wavelet coefficient was reconstructed.The square error sum of the cluster data sample sets was used to calculate the class set.The mapping function was used to transform the least squares support vector machine(LSSVM).The Lagrange multiplier was used to create the Lagrange multiplier function and thus to obtain the constraints of dual optimization problem.The symmetric encryption algorithm and the public key encryption algorithm were combined to encrypt the data.According to the description for the signals of ciphertext data in heterogeneous Internet of things,the output after integral accumulation was obtained.Finally,the local coherent accumulation method was used to process the ciphertext data signal,thus the linear calculation was completed.According to the non-coherent accumulation,the ciphertext data were captured.Simulation results show that the proposed method can receive heavy flow very fast,so it has ideal dynamic acquisition performance.

关 键 词：嵌入式 异构物联网 密文数据 动态捕获 相干积累值 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]