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Research on the Key Technologies of Identity Authentication and Content Security of Third Generation Network

Author: ZhangDongFang
Tutor: YangYiXian
School: Beijing University of Posts and Telecommunications
Course: Cryptography
Keywords: Digital Watermarking AKA protocol Authentication DRM 3G networks
CLC: TN918.82
Type: PhD thesis
Year: 2010
Downloads: 320
Quote: 1
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Abstract

Two important issues of authentication and content security communications security, two key issues, but also 3G network security research. The main characteristics of 3G networks in addition to the traditional voice business, but also provide a rich multimedia data services, so-called mobile Internet. The diversification of the business demand for 3G network access security, and the security of business data content. Primary guarantee of the 3G network, one of the core technologies of network access security is authentication and key agreement, authentication and key negotiation is to achieve secure communication, and to protect the interests of the users and operators. As part of the call set-up, authentication and key agreement protocol which plays a pivotal role. Therefore, the 3G authentication and key agreement protocol analysis and improvement of security has been an important topic of of 3G security research field. The 3G network multimedia data services, content security research areas in recent years, many research results. The characteristics of the open nature of the 3G network and multimedia data easy lossless copy, distribute, making the protection and management of multimedia content more realistic significance and application value. The digital watermarking technology is an important technology in the multimedia field of information security developed in recent years, the main application areas are marked with the copyright protection of digital content copyright; content authentication and integrity verification. In this thesis, the 3G network authentication and key agreement mechanism based on digital rights management, multimedia content copyright protection technology content, design a man-in-the-middle attack resistant authentication and key agreement protocol model and two for copyright multimedia digital watermarking algorithm protection and digital rights management interoperability standard for 3G networks. This thesis work mainly includes the following aspects: 1. 3G network authentication and key agreement protocol security analysis. System security framework of 3G network based on in-depth analysis of the security of the 3G network authentication and key agreement protocol, obtained the security risks of the current 3G network authentication and key agreement. 2. Improved AKA protocol designed a resistance MITM attack. Based on the 3G network authentication and key agreement (AKA) protocol security analysis, a the AKA protocol model (referred to as DH-AKA protocol) based on the Diffie-Hellman key exchange algorithm. The protocol model inherits the advantages of the Diffie-Hellman key exchange algorithm avoids the shortcomings can not be authenticated Diffie-Hellman algorithm. Safety performance assessment, that the agreement against MITM attacks, to ensure the agreement can be achieved between the ME and the VLR and the VLR and HLR based shared key two-way authentication mechanism; addition, once a secret \forward confidentiality, data integrity protection safety performance, and improve the anti-destruction capability of the 3G system. 3. Propose digital image watermarking algorithm based on edge detection. The digital image data redundancy and edge detection characteristics proposed image watermarking algorithm based on image edge detection, the algorithm of the watermark information embedded in the image edge information, key elements of the watermark information and images bindings, the algorithm is robust lossless compression format conversion, you can implement effective protection of digital image attributes. 4 digital audio watermarking algorithm is proposed based on a number of echo nuclear technology and time-domain spreading. The algorithm in-depth analysis on the basis of echo hiding watermark technology, the number of echo core and the time domain spread spectrum technology combines the watermark information is embedded in the digital, after extension of the watermark information in the use of spread spectrum technology, the use of multiple echo nuclear audio. The experiments show that the time domain spread spectrum technology to ensure that the algorithm can resist the DA and AD conversion attack, the advantages of multi-echo nuclear compensate for the watermark capacity loss brought about by the spread-spectrum technology. The problem there is no uniform standard for the DRM standard, designed a DRM bridge mechanism. For the lack of interoperability between DRM standards of 3G networks and other networks, DRM interoperability analysis, modeled on the concept of hardware bridge, designed the DRM the bridge mechanism, each network domain by DRM bridge DRM interoperability between network features work offline

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