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Erschienen in:
2009 | OriginalPaper | Buchkapitel
On a Construction of Short Digests for Authenticating Ad Hoc Networks
verfasst von : Khoongming Khoo, Ford Long Wong, Chu-Wee Lim
Erschienen in: Computational Science and Its Applications – ICCSA 2009
Verlag: Springer Berlin Heidelberg
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In pervasive ad-hoc networks, there is a need for devices to be able to communicate securely, despite the lack of apriori shared security associations and the absence of an infrastructure such as a PKI. Previous work has shown that through the use of short verification strings exchanged over manual authentication channels, devices can establish secret session keys. We examine a construction of such a cryptographic digest function for deriving the verification string, and propose an improved construction, with weaker assumptions. We further provide a concrete instantiation which is efficient, based on finite fields.