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In this paper, the energy cost of authentication and key exchange are quantified based on public-key cryptography on an 8-bit microcontroller platform. The paper presents a comparison of two public-key algorithms, RSA and Elliptic Curve Cryptography (ECC), and considers mutual authentication and key exchange between two untrusted parties such as two nodes in a wireless sensor network. The measurements on an Atmel ATmega128L low-power microcontroller indicate that public-key cryptography is very viable on 8-bit energy-constrained platforms even if implemented in software.

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Format:PDFSize:173 KB
Date:Dec 2004
Pages:5

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