Achievable Rates for Two-Way Wire-Tap Channels

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We consider two-way wire-tap channels, where two users are communicating with each other in the presence of an eavesdropper, who has access to the communications through a multiple-access channel. We find achievable rates for two different scenarios, the Gaussian two-way wire-tap channel, (GTW-WT), and the binary additive two-way wire-tap channel, (BATW-WT). It is shown that the two-way channels inherently provide a unique advantage for wire-tapped scenarios, as the users know their own transmitted signals and in effect help encrypt the other user's messages, similar to a one-time pad. We compare the achievable rates to that of the Gaussian multiple-access wire-tap channel (GMAC-WT) to illustrate this advantage.
International Symposium on Information Theory (ISIT) 2007, June 24-29

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Information Theory, Cryptography and Security

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http://salesiana.dossiersoluciones.com/handle/123456789/133624

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0704.3035
 http://arxiv.org/abs/0704.3035

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arXiv