The (in)security of some recently proposed lightweight key distribution schemes

01/20/2021

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by   Chris J Mitchell, et al.

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Two recently published papers propose some very simple key distribution schemes designed to enable two or more parties to establish a shared secret key with the aid of a third party. Unfortunately, as we show, most of the schemes are inherently insecure and all are incompletely specified - moreover, claims that the schemes are inherently lightweight are shown to be highly misleading.