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Erschienen in:
2006 | OriginalPaper | Buchkapitel
SEA: A Scalable Encryption Algorithm for Small Embedded Applications
verfasst von : François-Xavier Standaert, Gilles Piret, Neil Gershenfeld, Jean-Jacques Quisquater
Erschienen in: Smart Card Research and Advanced Applications
Verlag: Springer Berlin Heidelberg
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Most present symmetric encryption algorithms result from a tradeoff between implementation cost and resulting performances. In addition, they generally aim to be implemented efficiently on a large variety of platforms. In this paper, we take an opposite approach and consider a context where we have very limited processing resources and throughput requirements. For this purpose, we propose low-cost encryption routines (
i.e.
with small code size and memory) targeted for processors with a limited instruction set (
i.e.
AND, OR, XOR gates, word rotation and modular addition). The proposed design is parametric in the text, key and processor size, allows efficient combination of encryption/decryption, “on-the-fly” key derivation and its security against a number of recent cryptanalytic techniques is discussed. Target applications for such routines include any context requiring low-cost encryption and/or authentication.