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  • 天元讲堂(7.3):Alphabet Size Reduction for Secure Network Coding: A Graph Theoretic Approach
  • 浏览量:10 发布人: 亚游官网登录:2020-07-01
  • 题目:Alphabet Size Reduction for Secure Network Coding: A Graph Theoretic Approach

    报告人:光炫副教授 ( 南开大学 )

    时间:2020/7/3 15:00-16:00

    线上讲座,WeLink会议信息见下


    报告摘要:We consider a communication network where there exist wiretappers who can access a subset of channels, called a wiretap set, which is chosen from a given collection of wiretap sets. The collection of wiretap sets can be arbitrary. Secure network coding is applied to prevent the source information from being leaked to the wiretappers. In secure network coding, the required alphabet size is an open problem not only of theoretical interest but also of practical importance, because it is closely related to the implementation of such coding schemes in terms of computational complexity and storage requirement. We develop a systematic graph-theoretic approach for improving Cai and Yeung's lower bound on the required alphabet size for the existence of secure network codes. The new lower bound thus obtained, which depends only on the network topology and the collection of wiretap sets, can be significantly smaller than Cai and Yeung's lower bound. This is a joint work with Dr. Raymond Yeung.


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    WeLink会议信息:

    会议时间:2020/7/3 15:00-16:00

    会议 ID:981 995 915

    密码:236270


    邀请人:汪鑫

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