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Overview:

As the number of potential applications for tiny, battery-powered, "Mote"-like, deeply embedded devices grows, so does the need to simplify and secure interactions with such devices. Embedding a secure web server (capable of HTTP over SSL, aka HTTPS), enables these devices to be monitored and controlled securely via a user-friendly, browser-based interface. This paper presents the first empirical energy analysis of the Internet's dominant security protocol, SSL, on highly constrained devices. The author has enhanced Sizzle, the tiny-footprint HTTPS stack, with energy conserving features and measured its performance on a Telos mote. The paper shows that the key exchange phase, which consumes much more energy than bulk encryption and authentication, amortizes well over the transmission of a few kilobytes of application data.

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Format:PDFSize:1,205 KB
Date:Jun 2008
Pages:21

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