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arXiv 1301.5482cs.ITcs.CRmath.COmath.IT
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线性码的相对广义秩权及其在网络编码中的应用

Relative Generalized Rank Weight of Linear Codes and Its Applications to Network Coding

Jun Kurihara, Ryutaroh Matsumoto, Tomohiko Uyematsu

摘要:

本文通过推广最小秩距离的概念,引入了域扩张上长度为n的线性码C_1及其子码C_2的两个新的相对码参数。一种称为相对维数/相交轮廓(RDIP),另一种称为相对广义秩权重(RGRW)。我们阐明了它们的基本性质以及RGRW与最小秩距离之间的关系。作为RDIP和RGRW的应用,安全网络编码的安全性能和纠错能力,独立于底层网络代码的保证,进行了分析和澄清。提出了一种安全网络编码方案的构造,并以RDIP和RGRW为例分析了其安全性能和纠错能力。Silva和Kschischang证明了一种安全的网络编码的存在,在这种编码中,即使任何暗淡的C_1-1链路被窃听,也不会向对手透露任何秘密消息的任何部分,这是通过任何底层网络代码来保证的。然而,明确地构建这样一个计划仍然是一个悬而未决的问题。我们的新构造只是解决这个开放问题的安全网络编码的一个实例。

英文摘要:

By extending the notion of minimum rank distance, this paper introduces two new relative code parameters of a linear code C_1 of length n over a field extension and its subcode C_2. One is called the relative dimension/intersection profile (RDIP), and the other is called the relative generalized rank weight (RGRW). We clarify their basic properties and the relation between the RGRW and the minimum rank distance. As applications of the RDIP and the RGRW, the security performance and the error correction capability of secure network coding, guaranteed independently of the underlying network code, are analyzed and clarified. We propose a construction of secure network coding scheme, and analyze its security performance and error correction capability as an example of applications of the RDIP and the RGRW. Silva and Kschischang showed the existence of a secure network coding in which no part of the secret message is revealed to the adversary even if any dim C_1-1 links are wiretapped, which is guaranteed over any underlying network code. However, the explicit construction of such a scheme remained an open problem. Our new construction is just one instance of secure network coding that solves this open problem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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