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样例:第三代移动通信系统中认证和密钥协商协议的应用研究
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- 第三代移动通信系统(3G)是一个在全球范围内覆盖与使用的网络系统,它向用户提供高质量多媒体通信,不仅支持传统的话音与数据业务,还支持交互式业务与分布式业务,如多媒体业务、电子商务等,这种全新的业务环境对网络系统的安全性提出了更高的要求。本文主要研究的是第三代移动通信系统的认证与密钥协商机制:包括协议、算法、实现体制等。首先介绍了3G系统的安全体系结构、安全特性、安全目标,并详细阐述了网络接入安全机制。然后给出了AKA协议过程及协议的实现方法。接着介绍了AKA中所涉及到的安全算法,并提出了一种新的设计方法,同时进行了相关的测试。最后给出了本文的结论以及下一步的工作重点。 本文所做的主要工作表现在以下三个方面: (1) ASN.1(抽象语法标记)是一种用来描述结构化信息的标记语言。作为一个国际标准,它被用来对数据类型和数据的值进行标准化定义。在3GPP的层3(应用层)消息体系(包括安全协议)中,也使用ASN.1来描述层3消息。本文采用ASN.1来描述相关的安全协议,通过VC++来实现相关的安全算法和 ASN.1的编解码器。文中所提到的协议描述及实现方法,可广泛应用于通信协议的研究及测试。 (2) 混沌序列具有良好的伪随机性、轨道的不可预测性、对初值的敏感性等一系列特性,适合构造Hash函数。本文提出了一种基于Logistic映射的Hash 函数设计。实验结果表明该函数具有很好的初值敏感性、混乱和散布特性。 (3) 由于3G系统AKA协议相关算法无需标准化,因此可自主开发相应算法,以增加运营商或开发商的选择。本文提出了一套以上述Hash函数为内核算法的AKA 算法设计方案。方法简单易行,具有较高的实用价值。
错误译文
Third-generation (3G) mobile communication system is a global network system. It supports not only the tradional voice and data services, but also interoperable and distributing services such as high quality multimedia services, electronic commerce etc. The new service environment demands higher security of network.This thesis is devoted to the study of Authentication and Key Agreement mechanism of 3G mobile communication system, which includes protocols, algorithms and implementation etc. The thesis starts with the introduction of the 3G security architecture, characteristics and aims, and the security mechanism of network access is elaborated at the same time. Then, the procedure and implementation of AKA protocol are discussed. After that, based on the analysis of the security algorithms involved in AKA protocol, a new designing method is proposed and tested. Finally, the conclusions and the key points of the future work are presented.The main contributions of the thesis are as follows:(1) ASN.1 is a kind of tag language, which depicts structural infomation. As an international standard, it is applied to standardize data types and values. ASN.l can also be employed to describe the third layer (application layer) message in the 3GPP message system (including the security protocol). With the security protocol described by ASN.l, security algorithms and ASN.l encoder/decoder are implemented through VC++. The method of description and implementation of the protocol in this thesis can be widely applied in the research and test of other communication protocols.(2) Chaotic sequences are pseudo random, unpredictable and sensitive to initial condition and parameters, which are suitable for cryptography application. With Logistic mapping, a new hash function is designed and the test results show it has good confusion and diffusion properties.(3) Considering the standardization is not necessary, the security algorithms involved in AKA protocol can be developed to enrich the choices of carriers and developers. In this thesis, the solution of AKA algorithms, which uses hash function as core algorithm, is proposed. It's easy to be implemented and has the good prospect for application.
修改后译文
Third-generation (3G) mobile communication system is a network system covering and being applied globally. It provides high quality multimedia communication to the customer, supports not only the conventional voice and data services, but also the interactive and distributed services such as multimedia services, e-commerce and the like This whole-new service environment demands higher security of network. This thesis mainly studied the authentication and Key negotiation mechanism of 3G mobile communication system, which included protocols, algorithms and implementation, etc. The thesis started with an introduction of the 3G security architecture, characteristics and targets of security; moreover it also illustrates the security mechanism of network access in detail. Then the procedure and implementation of AKA protocol were discussed. The security algorithms involved in AKA protocol was also introduced. A new designing method was proposed with related tests done. Finally, the conclusions of the thesis and the key points of the future work were presented. The main contributions of the thesis include the following three aspects, firstly, ASN.1 (Abstract Syntax Notation One) is a tag language used to depict structured information. As an international standard, it is applied to standardize and define the data types and values. ASN.l can also be employed to describe the third layer (application layer) message in the 3GPP message system (including the security protocol). The thesis employs ASN.l to describe the related security protocol; the related security algorithms and encoder/decoder of ASN.l are implemented by VC++. The realizing method and protocol description in this thesis can be widely applied in the research and test of communica[1] [2] 下一页
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