An AES Based 256-bit Hash Function for Lightweight Applications: Lesamnta-LW
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概要
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This paper proposes a new lightweight 256-bit hash function Lesamnta-LW. The security of Lesamnta-LW is reduced to that of the underlying AES-based block cipher and it is theoretically analyzed for an important application, namely the key-prefix mode. While most of recently proposed lightweight primitives are hardware-oriented with very small footprints, our main target with Lesamnta-LW is to achieve compact and fast hashing for lightweight application on a wider variety of environments ranging from inexpensive devices to high-end severs at the 2120 security level. As for performance, our primary target CPUs are 8-bit and it is shown that, for short message hashing, Lesamnta-LW offers better tradeoffs between speed and cost on an 8-bit CPU than SHA-256.
著者
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Hirose Shoichi
Graduate School Of Engineering The Univ. Of Fukui
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YOSHIDA Hirotaka
Systems Development Labora-tory, Hitachi, Ltd.
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Preneel Bart
Katholieke Universiteit Leuven Dept. Electrical Engineering-esat
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Kuwakado Hidenori
Graduate School Of Engineering Kobe University
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Owada Toru
Systems Development Laboratory Hitachi Ltd.
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Ideguchi Kota
Systems Development Laboratory Hitachi Ltd.
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