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arXiv · 0903.3900

Optimized Implementation of Elliptic Curve Based Additive Homomorphic Encryption for Wireless Sensor Networks

Osman Ugus·Dirk Westhoff·Ralf Laue·Abdulhadi Shoufan·Sorin A. Huss
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Abstract

When deploying wireless sensor networks (WSNs) in public environments it may become necessary to secure their data storage and transmission against possible attacks such as node-compromise and eavesdropping. The nodes feature only small computational and energy resources, thus requiring efficient algorithms. As a solution for this problem the TinyPEDS approach was proposed in [7], which utilizes the Elliptic Curve ElGamal (EC-ElGamal) cryptosystem for additive homomorphic encryption allowing concealed data aggregation. This work presents an optimized implementation of EC-ElGamal on a MicaZ mote, which is a typical sensor node platform with 8-bit processor for WSNs. Compared to the best previous result, our implementation is at least 44% faster for fixed-point multiplication. Because most parts of the algorithm are similar to standard Elliptic Curve algorithms, the results may be reused in other realizations on constrained devices as well.

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Osman Ugus, Dirk Westhoff, Ralf Laue, Abdulhadi Shoufan, Sorin A. Huss. 2009-03-23. Optimized Implementation of Elliptic Curve Based Additive Homomorphic Encryption for Wireless Sensor Networks. https://arxiv.org/abs/0903.3900

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