| 网络信息安全无反馈单向传输系统的设计与实现 |
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| 引用本文： | 刘永富,焦斌亮,靳国庆,欧阳哲.网络信息安全无反馈单向传输系统的设计与实现[J].计算机安全,2010(11):38-41. |
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| 作者姓名： | 刘永富 焦斌亮 靳国庆 欧阳哲 |
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| 作者单位： | [1]燕山大学信息科学与工程学院,河北秦皇岛066004 [2]中国科学院计算技术研究所前瞻实验室,北京100018 [3]西安电子科技大学软件学院,陕西西安710071 |
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| 摘 要： | 在网络不同的安全域之间传输文件时,要求数据只能由低密级网络向高密级网络传输。介绍了位于不同安全域的两台计算机之间实现单向传输的原理和技术。系统地阐述了如何利用Atmel公司的ARM9芯片AT91SAM3U4E控制USB设备和SPI接口,结合光耦芯片6N137,从硬件和软件两个方面来实现无反馈数据单向传输。通过实验验证该系统利用USB2.0接口技术、SPI的DMA传输方式以及光耦隔离技术实现了快速、单向、可靠的数据传输。
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| 关 键 词： | 单向传输 网络隔离 光耦隔离器 USB2.0 串行外设接口 直接内存访问 |
Design and Implementation of Network Information Security One-way Transmission without Feedback |
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| LIU Yong-fu,JAO Bin-liang,JIN Guo-qing,OU Yang-zhe.Design and Implementation of Network Information Security One-way Transmission without Feedback[J].Network & Computer Security,2010(11):38-41. |
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| Authors: | LIU Yong-fu JAO Bin-liang JIN Guo-qing OU Yang-zhe |
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| Affiliation: | 1.College of Information Science and Engineering,Yanshan University,Qinhuangdao,Hebei 066004,China; 2. Advanced Computing Research laboratory,Institute Of Computing Technology Chinese Academy Of Sciences,BeiJing 100018,China;3.Software Engineering, Xi Dian University,Xi＇an,Shaanxi 710071,China) |
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| Abstract: | When transferring files between the different security domain, files are required to be only transferred from low security domain to high security domain. This article describes the technology and principles of how to realize one-way transmission between two computers in different security domains. It systematically illustrate how to use Atmel＇s ARM9 chip AT91SAM3U4E to control USB devices and SPI interfaces,combining with optocoupler chip 6N137,and to implement one-way data transmission without feedback from both hardware and software. Experiment results verify that the system based on USB2.0 Interface technology, SPI＇s DMA transmission , and coupler isolation technology achieves high-speed, one-way, reliable data transmission. |
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| Keywords: | unidirectional transmission network isolation opto-isolator USB2 0 Serial Peripheral Interface Direct Memory Access |
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