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Design and realization of security physical isolation system

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Journal of Southeast University(English Edition) 2005年第1期21卷 11-15页

作者：陈幼平尹勇李方敏周祖德华中科技大学机械科学与工程学院武汉430074 武汉科技大学信息科学与工程学院武汉430070

A physical isolation system based on PCI (peripheral component interconnect),embedded with intelligence card technology, strong identity authentication technology and securityaudit, etc., is introduced. The system can physically isolate the internaland external networks. Thehardware of the system, including PCI interface control circuits, network interface circuits andlogic control circuits, is designed to automatically adapt its operation speed and mode to thenetwork and securely isolate the internal and external networks; the software of the system,including the security strategy management module, the security audit module, the database recordexchanging module, the file exchanging module and the mail exchanging module, is designed toefficiently exchange and manage the data transference between the internal and external *** the driver of the system is implemented with Windows driver development kits (DDK) based onNetwork Driver Interface Specification (NDIS). The prototype ofthe system developed has beenemployed in the Police Fire Protection Bureau of Hubei Province, which performs consistently andefficiently. The technological cruxes discussed have practical values for related subjects.

关键词： physical isolation internal and external networks PCI (peripheral componentinterconnect) bus system management software driver

How to Achieve Both “physical isolation” and “Secure File Transfer” under the State of Strong Supervision

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Journal of Electronic Research and Application 2020年第5期4卷 8-12页

作者： Min Ai Donglin Zhu Yingli Zhang Wan Tao Xin Wei Industrial Bank Co. Ltd.Harbin BranchHarbin 150001Heilongjiang ProvinceChina

Communication security involves all aspects of the country and society,and financial security is of top *** strong supervision and strong technical means,a“semaphore”file exchange station is *** data transmission system is composed of a sending server,a receiving server,and a“semaphore”communication *** connections between internal and external networks are eliminated to achieve the purpose of“physical isolation”and“secure file transfer”.

关键词： “Semaphore”file exchange station physical isolation QR code transmission

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利用物理隔离技术保障电网信息系统安全

电力系统装备 2008年第1期 74-77页

作者：李再华电力科学研究院

信息系统的安全对于电网的安全运行和管理至关重要,利用物理隔离技术能够从根本上解决传统的网络安全问题.文中讨论了目前常见的几种网络安全技术,分析了物理隔离技术的原理、优点和应用现状,并提出了一种物理隔离的实现方案,用于隔离... 详细信息

信息系统的安全对于电网的安全运行和管理至关重要,利用物理隔离技术能够从根本上解决传统的网络安全问题.文中讨论了目前常见的几种网络安全技术,分析了物理隔离技术的原理、优点和应用现状,并提出了一种物理隔离的实现方案,用于隔离和保护电力自动化信息系统中各子网,最后分析了它的安全性.该方案已经实施并且投入现场运行,实践证明该方案安全可靠.

关键词：物理隔离技术保障电网信息系统安全 physical isolation Power Grid 隔离技术网络安全技术运行和管理隔离和保护电力自动化应用现状安全问题安全性子网证明原理现场实践

System of twice-gathering information and research of information fingerprint HashTrie

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Journal of Southeast University(English Edition) 2008年第3期24卷 381-384页

作者：沈阳朱婵元李舒晨武汉大学信息管理学院武汉430072 武汉大学计算机学院武汉430072 武汉大学国际软件学院武汉430072

This paper presents a twice-gathering information interactive system prototype of e-government based on the condition that the Intranet and the Extranet are physical *** in the Extranet can gather links of the latest related information from client software which is previously collected by web alert in the ***,through ferry-type transport devices,information is browsed by users in the Intranet,and it is transported to a storage device and synchronized with the web platform in the *** information gathering in the Extranet and data synchronization in the Intranet,it is essential to avoid repeated gathering and copying by means of comparing the extracted information fingerprints gathered from the web *** prototype uses HashTrie to store information *** testing,the structure based on HashTrie is 2.28 times faster than the Darts（double array Trie）which is the fastest structure in the existing applied *** existing 12 types of high speed Hash functions serving for HashTrie are also *** the dictionary content is larger than 5×105 words,the PJWHash or the SuperFastHush function can be adopted;when the dictionary content is 105 words, CalcStrCR32 and ELFHash functions can be adopted.

关键词： physical isolation twice-gathering duplicated web pages elimination information fingerprint HashTrie

Two-Dimensional Code Transmission System Based on Side Channel Feedback

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国际计算机前沿大会会议论文集 2023年第1期 363-371页

作者： Han Sun Qiang Gao Zhifang Wang Department of Electronic Engineering Heilongjiang UniversityHarbin 150080China

Two-dimensional code technology is widely used in all walks of life due to its high reliability,large information capacity and relative security of *** the carrier of data transmission,two-dimensional code has become a new form of nearﬁeld communication,and mainly used for theﬂow of *** rapid spread of smart devices with cameras has further broadened the use of two-dimensional *** combination of smartphones and two-dimensional code eliminates the dependence on special physical isolation devices and reduces transmission *** this paper,a two-dimensional code transmission system based on side channel is designed,which transmits conﬁdential informa-tion through the visual main channel of two-dimensional code and retransmits feedback information through the acoustic side *** paper veriﬁes the impact of QR code capacity on data integrity and improvesﬁle transfer integrity.

关键词： QR code physical isolation Information security Smartphone Acoustic side channel