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arXiv 1201.4243cs.CRcs.DMcs.ITmath.IT
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一种安全组播密钥分配方案的分析

Analysis of a Key Distribution Scheme in Secure Multicasting

Maze Gerard

摘要:

本文分析了Wu,Ruan,Lai和Tseng提出的安全密钥广播方案。系统参数的研究是基于与有限域上的一种特殊类型的对称方程的连接。我们提出了两种不同的攻击系统,其效率取决于参数的选择。特别是,描述了一个时间记忆权衡攻击,有效时,该计划的参数选择不小心。在这种情况下,超过三分之一的情况下,可以打破的时间和空间复杂度的范围内的最佳攻击的复杂性的平方根的Wu等人。这导致了现实场景中的可行攻击。

英文摘要:

This article presents an analysis of the secure key broadcasting scheme proposed by Wu, Ruan, Lai and Tseng. The study of the parameters of the system is based on a connection with a special type of symmetric equations over finite fields. We present two different attacks against the system, whose efficiency depends on the choice of the parameters. In particular, a time-memory tradeoff attack is described, effective when a parameter of the scheme is chosen without care. In such a situation, more than one third of the cases can be broken with a time and space complexity in the range of the square root of the complexity of the best attack suggested by Wu et al. against their system. This leads to a feasible attack in a realistic scenario.

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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