采用嵌入式及SSL的多用户安全型串口服务器设计

摘要

针对目前串口服务器在安全性及功能性上的不足之处,提出以ARM9和嵌入式Linux为平台,采用SSL协议开发的具有多用户管理的安全型串口服务器.介绍了多用户安全型串口服务器的整体硬软件设计方案.实现了U-boot、内核、文件系统以及各功能库在内的嵌入式Linux系统在AT91SAM9261处理器上的移植,对软件系统的构架进行了论述,着重介绍了数据处理框架、用户管理以及SSL的实现.应用结果表明,此设备运行稳定可靠,能够满足安全通信的要求.%For the shortage of current serial device server which almost lacks security and functionality, based on arm9 and Linux, we have designed a secure serial device server using SSL protocol and multi-user management. The overall design of hardware and software were introduced. Including U-boot, kernel, root file system and a variety of tools,embedded Linux system has been emigrated, we discussed the framework of the software system, focusing on data process framework, user management and the implementation of SSL. The application shows that this device runs stably and meets the needs of secure communication.