A Public-Key Infrastructure for Key Distribution in TinyOS Based on Elliptic Curve Cryptography

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A Public-Key Infrastructure for Key Distribution in TinyOS Based on Elliptic Curve Cryptography

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by David J. Malan, Matt Welsh, Michael D. Smith

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268 - 4 self

BibTeX

@MISC{Malan_apublic-key,
    author = {David J. Malan and Matt Welsh and Michael D. Smith},
    title = {A Public-Key Infrastructure for Key Distribution in TinyOS Based on Elliptic Curve Cryptography},
    year = {}
}

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Abstract

We present the first known implementation of elliptic curve cryptography over F2p for sensor networks based on the 8-bit, 7.3828-MHz MICA2 mote. Through instrumentation of UC Berkeley’s TinySec module, we argue that, although secret-key cryptography has been tractable in this domain for some time, there has remained a need for an efficient, secure mechanism for distribution of secret keys among nodes. Although public-key infrastructure has been thought impractical, we argue, through analysis of our own implementation for TinyOS of multiplication of points on elliptic curves, that public-key infrastructure is, in fact, viable for TinySec keys ’ distribution, even on the MICA2. We demonstrate that public keys can be generated within 34 seconds, and that shared secrets can be distributed among nodes in a sensor network within the same, using just over 1 kilobyte of SRAM and 34 kilobytes of ROM.

Keyphrases

public-key infrastructure elliptic curve cryptography key distribution sensor network elliptic curve secret-key cryptography 3828-mhz mica2 mote tinysec module uc berkeley tinysec key distribution secure mechanism public key secret key

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