多媒体社交网络下的访问控制研究
发布时间：2018-10-20 11:24
【摘要】：多媒体社交网络（Multimedia Social Networks，MMSNs）作为一种最方便地在线分享图像、视频和音频等多媒体内容的方式出现，它使人与人之间的交流与信息传播更加方便、快捷，但同时也带来了大量的隐私泄露、版权纠纷等安全问题，这给互联网信息的安全传播带来了严重危害。针对这些安全问题，访问控制机制提供了一种可以在MMSNs中有选择地分享多媒体内容的方法。访问控制机制决定哪些用户能够访问何种资源，以及如何使用这些资源。然而，现有的访问控制模型，已无法满足这一新兴互联网的应用需求。因此，本文针对多媒体社交网络场景下的数字内容（权利）安全传播问题展开研究： 1.提出了一种基于用户主要社交关系属性如用户类型、紧密度、内容分享深度和信任度等，面向多媒体社交网络的访问控制模型，并给出新模型的形式化描述与访问控制规则。通过自定义安全规则及其安全策略冲突消解，有效地解决了数字媒体访问和分享传播中的安全问题，适用了多媒体数字版权保护应用的实际需求。最后给出了应用实例，从功能性与安全性方面与现存的典型访问控制策略做对比分析，表明此模型的有效性和先进性。 2.基于安全策略效用的形式化定义，在多媒体数字内容访问场景中，将安全策略选择描述为一个由内容提供者与内容请求者之间的二人混合策略博弈，，对其进行了形式化描述与分析。并依据安全策略组合的效用以及对各方收益的影响，进而获得博弈的混合策略纳什均衡，以此建立和增强双方信任，最后通过实例验证了所提出方法的可行性，从安全性与先进性等方面与现存的安全博弈模型进行了对比分析。 最后，基于本文所提出的多媒体社交网络访问控制理论模型，设计并实现了一个功能较为完备的多媒体社交网络平台原型系统。通过测试分析，此系统满足了一般意义上的社交网络平台访问控制需求，实现了用户结交好友、预览、上传、下载和分享多媒体数字内容的功能，用户可以设置数字内容的访问权限，系统运行正常，测试结果良好。 本文研究对实现多媒体社交网络下数字内容的安全可控传播，具有基础理论意义，对促进数字内容平台和产业的健康、良性发展，具有良好的应用前景和实用价值。
[Abstract]:Multimedia social network (Multimedia Social Networks,MMSNs) has emerged as the most convenient way to share multimedia content such as image, video and audio online. It makes communication and information transmission between people more convenient and quick. But at the same time, it also brings a lot of privacy leakage, copyright disputes and other security issues, which brings serious harm to the safe dissemination of Internet information. To solve these security problems, the access control mechanism provides a method for selectively sharing multimedia content in MMSNs. Access control mechanisms determine which users can access which resources and how to use them. However, the existing access control model can not meet the needs of this new Internet application. Therefore, this paper focuses on the secure spread of digital content (rights) in the context of multimedia social networks: 1. This paper presents an access control model for multimedia social networks based on the user's main social relationship attributes such as user type, tightness, content sharing depth and trust, and gives the formal description and access control rules of the new model. The security problems in digital media access and sharing propagation are effectively solved by resolving the conflicts between custom security rules and their security policies, and the practical requirements of multimedia digital copyright protection applications are applied. Finally, an application example is given and compared with the existing typical access control strategies in terms of functionality and security. The results show that the model is effective and advanced. 2. Based on the formal definition of security policy utility, in the multimedia digital content access scenario, the security policy selection is described as a two-person mixed policy game between the content provider and the content requester. It is described and analyzed formally. According to the utility of the security policy combination and the effect on the income of the parties, the Nash equilibrium of mixed strategy is obtained, so as to establish and enhance the trust between the two sides. Finally, the feasibility of the proposed method is verified by an example. Compared with the existing security game model from the aspects of security and advancement. Finally, based on the theoretical model of multimedia social network access control, a prototype system of multimedia social network platform is designed and implemented. Through test and analysis, the system can meet the requirement of access control of social network platform, and realize the function of making friends, previewing, uploading, downloading and sharing multimedia digital content. Users can set access to digital content, the system runs normally, the test results are good. The research in this paper has the basic theoretical significance to realize the safe and controllable spread of the digital content under the multimedia social network, and has good application prospect and practical value to promote the healthy and healthy development of the digital content platform and industry.
【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.08
本文编号：2283017
[Abstract]:Multimedia social network (Multimedia Social Networks,MMSNs) has emerged as the most convenient way to share multimedia content such as image, video and audio online. It makes communication and information transmission between people more convenient and quick. But at the same time, it also brings a lot of privacy leakage, copyright disputes and other security issues, which brings serious harm to the safe dissemination of Internet information. To solve these security problems, the access control mechanism provides a method for selectively sharing multimedia content in MMSNs. Access control mechanisms determine which users can access which resources and how to use them. However, the existing access control model can not meet the needs of this new Internet application. Therefore, this paper focuses on the secure spread of digital content (rights) in the context of multimedia social networks: 1. This paper presents an access control model for multimedia social networks based on the user's main social relationship attributes such as user type, tightness, content sharing depth and trust, and gives the formal description and access control rules of the new model. The security problems in digital media access and sharing propagation are effectively solved by resolving the conflicts between custom security rules and their security policies, and the practical requirements of multimedia digital copyright protection applications are applied. Finally, an application example is given and compared with the existing typical access control strategies in terms of functionality and security. The results show that the model is effective and advanced. 2. Based on the formal definition of security policy utility, in the multimedia digital content access scenario, the security policy selection is described as a two-person mixed policy game between the content provider and the content requester. It is described and analyzed formally. According to the utility of the security policy combination and the effect on the income of the parties, the Nash equilibrium of mixed strategy is obtained, so as to establish and enhance the trust between the two sides. Finally, the feasibility of the proposed method is verified by an example. Compared with the existing security game model from the aspects of security and advancement. Finally, based on the theoretical model of multimedia social network access control, a prototype system of multimedia social network platform is designed and implemented. Through test and analysis, the system can meet the requirement of access control of social network platform, and realize the function of making friends, previewing, uploading, downloading and sharing multimedia digital content. Users can set access to digital content, the system runs normally, the test results are good. The research in this paper has the basic theoretical significance to realize the safe and controllable spread of the digital content under the multimedia social network, and has good application prospect and practical value to promote the healthy and healthy development of the digital content platform and industry.
【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.08
【参考文献】
相关期刊论文 前2条
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