Abstract
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.
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Standaert, FX., Piret, G., Gershenfeld, N., Quisquater, JJ. (2006). SEA: A Scalable Encryption Algorithm for Small Embedded Applications. In: Domingo-Ferrer, J., Posegga, J., Schreckling, D. (eds) Smart Card Research and Advanced Applications. CARDIS 2006. Lecture Notes in Computer Science, vol 3928. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11733447_16
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DOI: https://doi.org/10.1007/11733447_16
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