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A comparative study of ciphers and their VLSI implementation for low-power communications
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Dissertation
A comparative study of ciphers and their VLSI implementation for low-power communications
2002
Overview
Modern society is heavily dependent on information and communication. This is true for the economy, individuals, and governments. All of these organisations must be able to transfer information rapidly and securely. Current products and technology that allow for this ability are either fast and power hungry or relatively slow and power-efficient. These realities normally force the user to choose between security and performance. This compromise tends to hurt the mobile community the most as power requirements have to be minimal. With today's high speed networks, however, even the most advanced servers have trouble running hundreds or even thousands of secure lines. To combat these problems, this study first examines a group of modern ciphers to see how well they are suited to these situations. It will first compare hardware (VLSI) implementations of block ciphers, both old and new. The study will then move on to stream ciphers, and a new type of cascaded stream cipher. Then it will compare the algorithms, assessing the advantages and disadvantages of each. It will then show that while block ciphers have enormous throughput stream ciphers are probably better suited for mobile communications. Lastly, with the knowledge gained from implementing all of these ciphers in VLSI, specialised encryption units were added to a general purpose CPU resulting in significant performance increases, while also being very feasible to implement.
Publisher
ProQuest Dissertations & Theses
Subject
ISBN
9780612656338, 0612656330
