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首页> 外文会议>4th ACM symposium on information, computer and communications security 2009 >Unconditionally Secure Message Transmission in Arbitrary Directed Synchronous Networks Tolerating Generalized Mixed Adversary
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Unconditionally Secure Message Transmission in Arbitrary Directed Synchronous Networks Tolerating Generalized Mixed Adversary

机译：容许广义混合对手的任意定向同步网络中的无条件安全消息传输

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摘要

In this paper, we re-visit the problem of unconditionally secure message transmission (USMT) from a sender S to a receiver R, who are part of a distributed synchronous network, modeled as an arbitrary directed graph. Some of the intermediate nodes between S and R can be under the control of an adversary having unbounded computing power. Desmedt and Wang [4] have given the characterization of USMT in directed networks. However, in their model, the underlying network is abstracted as directed node disjoint paths (also called as wires/channels) between S and R, where the intermediate nodes are oblivious, message passing nodes and perform no other computation. In this work, we first show that the characterization of USMT given by Desmedt et.al [4] does not hold good for arbitrary directed networks, where the intermediate nodes can perform some computation, beside acting as message forwarding nodes. We then give the characterization of USMT in arbitrary directed networks, considering the entire network as a whole. As far our knowledge is concerned, this is the first ever characterization of USMT in arbitrary directed networks.
机译：在本文中，我们将重新探讨从发送方S到接收方R的无条件安全消息传输（USMT）问题，这些发送方是分布式同步网络的一部分，被建模为任意有向图。 S和R之间的某些中间节点可以在具有无限计算能力的对手的控制下。 Desmedt和Wang [4]给出了定向网络中USMT的特征。但是，在他们的模型中，底层网络被抽象为S和R之间的有向节点不相交路径（也称为电线/通道），其中中间节点是遗忘的，消息传递节点，并且不执行其他任何计算。在这项工作中，我们首先证明Desmedt等人[4]给出的USMT的特性对任意定向网络没有好处，在定向网络中，中间节点除了可以充当消息转发节点之外还可以执行一些计算。然后，我们将整个网络作为一个整体，对任意定向网络中的USMT进行表征。就我们所知，这是USMT在任意定向网络中的首次表征。

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