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Shake well before use: Authentication based on Accelerometer Data

Research output: Contribution in Book/Report/ProceedingsPaper

Published

Publication date05/2007
Host publicationProc. Pervasive 2007: 5th International Conference on Pervasive Computing
PublisherSpringer-Verlag,
Pages144-161
Number of pages18
Original languageEnglish

Abstract

Small, mobile devices without user interfaces, such as Bluetooth headsets, often need to communicate securely over wireless networks. Active attacks can only be prevented by authenticating wireless communication, which is problematic when devices do not have any a priori information about each other. We introduce a new method for device-to-device authentication by shaking devices together. This paper describes two protocols for combining cryptographic authentication techniques with known methods of accelerometer data analysis to the effect of generating authenticated, secret keys. The protocols differ in their design, one being more conservative from a security point of view, while the other allows more dynamic interactions. Three experiments are used to optimize and validate our proposed authentication method.

Bibliographic note

Awarded best Pervasive 2007 paper