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Commitment-based device-pairing protocol with synchronized drawings and comparison metrics
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DOI：10.1016/j.pmcj.2014.10.006.png)
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Abstract
En 中文
This article presents a new method for pairing devices securely. The commitment-based authentication uses a fuzzy secret that the devices only know approximately. Its novel feature is time-based opening of commitments in a single round. We also introduce a new source for the fuzzy secret: synchronized drawing with two fingers of the same hand on two touch screens or surfaces. The drawings are encoded as strings and compared with an edit-distance metric. A prototype implementation of this surprisingly simple and natural pairing mechanism shows that it accurately differentiates between true positives and manin-the-middle attackers. (C) 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license
Keywords:
Security
Device pairing
Commitment protocol
Edit distance
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