Secure Network Coding for Wiretap Networks of Type II - Computer Science > Information TheoryReportar como inadecuado




Secure Network Coding for Wiretap Networks of Type II - Computer Science > Information Theory - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: We consider the problem of securing a multicast network against a wiretapperthat can intercept the packets on a limited number of arbitrary network edgesof its choice. We assume that the network employs the network coding techniqueto simultaneously deliver the packets available at the source to all thereceivers.We show that this problem can be looked at as a network generalization of thewiretap channel of type II introduced in a seminal paper by Ozarow and Wyner.In particular, we show that the transmitted information can be secured by usingthe Ozarow-Wyner approach of coset coding at the source on top of the existingnetwork code. This way, we quickly and transparently recover some of theresults available in the literature on secure network coding for wiretapnetworks. Moreover, we derive new bounds on the required alphabet size that areindependent of the network size and devise an algorithm for the construction ofsecure network codes. We also look at the dual problem and analyze the amountof information that can be gained by the wiretapper as a function of the numberof wiretapped edges.



Autor: Salim El Rouayheb, Emina Soljanin, Alex Sprintson

Fuente: https://arxiv.org/



DESCARGAR PDF




Documentos relacionados