文件传输

As improving the networking ability, it will encounter many problems, such as the definition of circuit diagram files, the conversion of NAT, the selection of transmission channel and protocol, and etc.

在网络化改进时要解决很多新的问题，如电路图文件的的定义，NAT转换的处理，传输途径的选择，传输协议的选择等问题。

In the design of SMCOS, introduce the software and hardware developing platform of SMCOS at first, then describe the system characteristic and hierarchical structure, tell the course of design and implementation of the software system of the SMCOS finally, mainly tell software architecture, design method to command interpreter, transmission module and file management, especially carry on deep explanation and discussion to the security environmental management of SMCOS, design the secure pseudorandom number generator according to systemic characteristic; Implement AES cryptographic algorithm, and optimize in term of the characteristics of AVR platform, make it reach the faster speed of encryption in case

在SMCOS的设计中，首先介绍了SMCOS的软硬件开发平台，然后描述了系统特性及其层次结构，最后讲述了SMCOS的软件系统设计与实现过程，主要讲述了SMCOS的软件架构、命令解释器、传输模块以及文件管理器的设计方法，特别对于SMCOS的安全环境管理进行深入的讲解及探讨，针对系统特点设计了安全的伪随机数生成方法；实现了AES加密服务模块，并针对AVR平台的特点进行了优化，使其在占用较小的代码空间的情况下达到较快的加密速度；改进了PIN的认证方法，对其传输过程提供了安全保护并采用了安全的验证方式以避免可能遭受的攻击：设计了相互认证命令，缩减了认证过程的时间消耗并提高了安全性。

It aims for the data interchange and the technological difficult point with data transmission in the course of system merged. At first It has discussed swapper of the file, DDE technology and ODBC technology in detail with combination on-the-spot application. And it has solved the data interchange problem between safe monitoring system and relevant systems. With utilizing much thread thought and WinSock technology, it has solved the data transmission problem.

针对系统融合过程中的数据转换和数据传输的技术难点，结合现场应用，详细讨论了文件交换技术、DDE技术及ODBC技术，并解决了安全监控系统与相关系统之间的数据交换问题；利用多线程思想和WinSock技术解决了数据传输问题。

The main features of this paper is: nothing to do with the platform, this system can be compatible with the majority of software and hardware used by the platform, as well as various database platform, shielding the differences of hardware and software platform such as network, operating systems, databases, application systems and so on, so that enterprises and institutions could achieve seamless, transparent data exchange through data exchange system; Java technology used to develop the system transplantability; using data exchange center to achieve centralized data processing, different data format conversion, increased system scalability; from data transmission, authentication, access control, encryption and more news content log-class areas enhanced data exchange system security; using DES and RSA algorithm , increased the confidentiality of data transmission; create WrapperTimer category achieved data transmission timing implementation and reduce the dependence on artificial.

设计的系统与平台无关，能兼容企业所用的大多数软硬件平台，以及各种数据库平台，屏蔽网络、操作系统、数据库、应用系统等软硬平台的差异，使企事业单位通过数据交换系统实现无缝的、透明的交换数据；采用数据交换中心来实现数据的集中处理、不同数据格式的转换，增加了系统的可扩展性；从数据传输、身份认证、权限控制、消息内容加密和多级日志等多方面增强数据交换系统的安全性；用DES和RSA算法对XML文件或XML文件中的元素进行加密，增加传输数据的保密性；创建WrapperTimer类实现了数据传输的定时执行，降低了对人工的依赖性。

The Design of Network File System According to the Virtual Address wants to realize the Net of conjoining, and on this basis, to realize the data delivers and network file operation of relevant system. The main contents includes to realize the conjoining of two computers; The data construction of the definition network file system; Realize the operation that have something to do with network file system and design the access calculate way of the file of virtual address.

基于虚地址的网络文件系统的设计是要实现联网，并在此基础上实现数据传输及与网络文件系统有关的操作，其主要内容包括实现两台计算机的互联；定义网络文件系统的数据结构；实现与网络文件系统有关的操作和设计虚地址文件的存取算法四个方面。

For example, a new transport could deliver a document, such as an EDI X12 that would be reprocessed in the normal way through the rest of the system.

例如，一个新的传输可以传输一个文件，例如EDI X12可以以一种通常的方式通过余下的系统进行在加工。

Commonly used local area network file transfer tool- Dove Biography book source code, for the development of network communication of a friend should be a good help.

详细说明：常用的局域网文件传输工具－飞鸽传书的源代码，对于开发网络通讯的朋友应该是个很好的帮助。

Silver Key is the silver bullet for secure file transfer.

银的关键是银弹，为安全文件传输。

LAN is a communications tool, text chat, voice chat, file transf...

是一个局域网内的通讯工具，有文字聊天、语音聊天、文件传输、信使服务、邮件检测等主要功能。

Limited access is defined as self-directed onsite usage; it does not include use of copying facilities, loan of materials, cost-incurring research services, document delivery, FAX, interlibrary loan, or other privileges and services granted to primary mission users.

机会有限，被界定为自我导向现场使用；它不包括使用复制设施，贷款的材料，费用承担的研究服务，文件传输，传真，馆际互借，或其他特权和服务的首要任务给予用户。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。