Commitment-based device-pairing protocol with synchronized drawings and comparison metrics. Antikainen, M., Sethi, M., Matetic, S., & Aura, T. Pervasive and Mobile Computing, 2014.
Commitment-based device-pairing protocol with synchronized drawings and comparison metrics [link]Website  abstract   bibtex   
Abstract 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 man-in-the-middle attackers.
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 title = {Commitment-based device-pairing protocol with synchronized drawings and comparison metrics},
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 year = {2014},
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 keywords = {commitment,device,distance,edit,pairing,protocol,reading-group,security},
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 abstract = {Abstract 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 man-in-the-middle attackers.},
 bibtype = {article},
 author = {Antikainen, Markku and Sethi, Mohit and Matetic, Sinisa and Aura, Tuomas},
 journal = {Pervasive and Mobile Computing},
 number = {0}
}

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