Public Key Signatures and Lightweight Security Solutions in a Wireless Environment

Authors:
Dmitrij Lagutin;Sasu Tarkoma
Affiliations:
Helsinki Institute for Information Technology HIIT, Helsinki University of Technology TKK, Espoo, Finland;Helsinki Institute for Information Technology HIIT, Helsinki University of Technology TKK, Espoo, Finland
Venue:
NEW2AN '09 and ruSMART '09 Proceedings of the 9th International Conference on Smart Spaces and Next Generation Wired/Wireless Networking and Second Conference on Smart Spaces
Year:
2009

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Abstract

Several security solutions have been proposed for wireless networks, most of these are based on lightweight security measures and contain significant drawbacks, such as transit path dependency and high bandwidth overhead. In this work we compare a Packet Level Authentication (PLA), which is a public key based solution, against hash tree and hash chain based solutions in terms of security and energy overhead in wireless environment. We argue that due to advances in the semiconductor technology, public key based security solutions are viable for wireless networks. In many cases they actually achieve a better energy efficiency due to their lower bandwidth overhead.