安全通信

This paper analyzes the security in a mobile telephone network with emphasis on its identification authentication, data encryption, key assignation and integrity authentication.

分析了移动通信网络中的不安全因素，重点讨论了移动通信网络中的身份认证和密钥分配，数据加密与完整性检测方案，并对其安全性进行了详细分析。

Ciphering information with Cipher technology is the most common and effective method.

军事通信的安全保密是国防建设中的重要问题，如何确保重要信息的安全也就成为各方关注的一个重点，采用密码技术对信息加密是最常用、最有效的安全保护手段。

Socket LAN-based communications software for local area network to provide a good, safe, fast communication mechanism.

基于Socket的局域网通信软件可以为局域网提供一种良好，安全，快速的通信机制。

Real-time chaotic secure communication system synthesize the new research achievement of nonlinear theory, cryptology and communication technology, and it will be applied widely in the field of information security.

由于实时混沌保密通信系统综合了非线性理论、密码学以及通信技术的新成果，将在信息安全中具有广阔的应用前景。

In the course of study on the agreements, this paper provides a kind of hyperelliptic cryptosystem scheme based on public key certificate, this scheme solves some safe problems in the traditional cryptosystem effectively, have the small communication amount, safe intensity and computation speed, especially suitable for solving the security problem existing in some systems with limited resource.

在对密码协议的研究过程中，作者提出了一种基于公钥证书的超椭圆曲线密码体制方案，该方案有效地解决了传统密码体制中的一些安全问题，具有安全强度高、通信量小、计算速度快等优点，特别适合用于解决资源受限系统的安全问题。

In this paper,we simply introduces the whole design scheme of security network access server; subsequently, we deeply analyse the principle and structure model of RADIUS and TACACS in the distributed security authentication system, and more explain the idea and implementation of design. On the other hand, in order to authencating、authorizing and accounting more securely, efficiently and accurately to the remote users, we put forward a series of key techniques which are used in analysis such as MD5 encryption arithmetic、packet retransfer、buffer storage、interprocess communication and so on, and prove the compatibility of the system through employing the commercial software Shiva AccessManager.

本论文首先简要介绍了《安全网络访问服务器》的总体设计方案；之后，深入分析了分布式安全认证系统RADIUS和TACACS的原理与结构模型，并进一步详细阐述了安全认证模块的设计思想和实现，深入剖析了系统中引用的MD5加密算法、数据包重发机制、缓冲区存储、进程间通信等技术，这些技术使得系统能安全、高效、准确地对远程用户进行认证、授权和计费，而且通过使用商用软件Shiva AccessManager的测试验证了该系统的通用性。

Grounding System in order to improve the quality of communication to ensure that the communications equipment and personal safety, Communication room requires a good grounding system.

为提高通信质量，确保通信设备与人身的安全，通信机房都要求有良好的接地系统。

An antenna device and a portable wireless communication apparatus are disclosed to securely lower a local average SAR in correspondence to at least two or more kinds of radio communication systems using different radio communication frequencies even when any radio communication frequency is used.

公开了一种天线装置和便携式无线通信装置，即使在使用任何无线通信频率的时候，也能安全降低对应于至少两种或多种无线通信系统的局部平均SAR。

The on-board module is connected with the existing safety detection devices such as TCU, LCU and TAX box, through the serial interface bus, and realizes integrated data collection from electric apparatus and control system. The intercommunication platform between the locomotive and the ground is established based on the BEIDOU satellite and GPRS system; the former is used for distant communicating while the latter is used for massive communicating. The design of the ground supervision system is fulfilled.

制定了车载单元的串口总线协议，车载主控单元通过串口总线连接机车的微机控制柜、逻辑控制单元和TAX箱等现有独立的安全检测设备，实现对机车电器部件和控制系统运用状态信息的综合数据采集；综合采用北斗卫星通信和GPRS移动通信技术构建了机车与地面之间的双向数据通信平台，前者解决了在偏远地区的数据传输问题，后者解决了机车运用状态信息的大数据量传输问题。

In order to provide confidential and integrated communication service for group applications, PAGKA, IAGKA and AGDH are implemented and integrated with a reliable group communication system Spread to constitute a layered secure group communication platform prototype.

为了向群应用提供保密和完整的通信服务，本文实现了AGDH、PAGKA和IAGKA三种方案，并与可靠的群通信系统Spread集成起来，构建了一个分层的安全群通信平台原型。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。