一种时间域不变的空间降维加密数字仿真方法  

A Time Domain Invariant Digital Simulation Method for Spatial Dimension Reduction Encryption

作　　者：张阔 许西 Zhang Kuo;Xu Xi(Beijing CCID Publishing&Media Co.,Ltd.,Beijing,100048;China Center for Information Industry Development,Beijing,100048)

机构地区：[1]北京赛迪出版传媒有限公司,北京100048 [2]中国电子信息产业发展研究院,北京100048

出　　处：《工业信息安全》2023年第5期12-19,共8页Industry Information Security

摘　　要：本文以某钻采工程的弹性波传感问题为研究对象,秉承“相对安全”理念,以“原始数据不出域、数据可用不可见”为启迪,提出一种保持时间域不变的、基于空间降维加密的数字仿真方法。由时间域三维空间波场的求解起步,实施深度分量上的空间降维加密,将三维空间模型降维为若干个二维波数切片,在不同网络节点通过分布式计算完成各切片的仿真。将所有波数切片仿真结果整合为波数—时间加密矩阵后,离线实施数据升维还原操作,即可得到不同深度下的弹性波钻采波形数据。考察波数—时间加密矩阵在发生不同程度信息缺失时的升维还原情况,发现将特定区间的波数切片集中分配给同一个网络节点进行计算,再对低波数区间实施相对较高的等级保护,能达成最经济、最有效的数据安全保护效果。In this work,by taking the elastic wave sensing issue of a drilling and production project as the research object,adhering to the concept of“relative safety”and taking“the original data is not out of the domain,the data is available but invisible”as the enlightenment,a digital simulation method based on the spatial dimension reduction encryption while keeping the time domain invariant was proposed.Started from the three-dimensional wave field solution in the time domain,the spatial dimension reduction encryption on the depth component was implemented,the three-dimensional spatial model was reduced to several two-dimensional wavenumber slices,and the simulation of each slice was completed by distributed calculations at different network nodes.After the simulation results of all the wavenumber slices were integrated into a wavenumber-time encryption matrix,the data were upgraded and restored offline,and the elastic wave drilling and production waveform data at different depths were obtained.By investigating the dimension increasing restoration on the wavenumber-time encryption matrix when there were different extents of information missing,it was found that the most economical and effective data security protection effect could be achieved by distributing wavenumber slices in a specific interval to the same network node for calculation,and then implementing a relatively high level of protection for low wavenumber intervals.

关 键 词：钻采工程 空间降维加密 波数—时间加密矩阵 弹性波 等级保护 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]