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Implementing Public-key Infrastructure for Sensor Networks by David J. Malan; Matt Welsh; Michael D. Smith is a Computer Science article available to read on EtoBox.

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We present a critical evaluation of the first known implementation of elliptic curve cryptography over F ~2 __p__~ for sensor networks based on the 8-bit, 7.3828-MHz MICA2 mote. We offer, along the way, a primer for those interested in the field of cryptography for sensor networks. We discuss, in particular, the decisions underlying our design and alternatives thereto. And we elaborate on the methodologies underlying our evaluation. Through instrumentation of UC Berkeley's TinySec module, we argue that, although symmetric cryptography has been tractable in this domain for some time, there has remained a need, unfulfilled until recently, for an efficient, secure mechanism for distribution of secret keys among nodes. Although public-key infrastructure has been thought impractical, we show, through analysis of our original implementation for TinyOS of point multiplication on elliptic curves, that public-key infrastructure is indeed 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 time, using just over 1 kilobyte of SRAM

Who reads Implementing Public-key Infrastructure for Sensor Networks?

Author

David J. Malan; Matt Welsh; Michael D. Smith

Publisher

ACM

Published

2008

Language

EN

Field

Computer Science (Physical Sciences)