A New Stand-Alone MAC Construct Called SMAC
Abstract: In this paper, we present a new efficient stand-alone MAC construct named SMAC, based on processing using the Finite State Machine (FSM) part of the stream cipher family SNOW, which in turn uses the AES round function. It offers a combination of very high speed in software and hardware with a truncatable tag. Three concrete base versions of SMAC are proposed, each offering a different security level. SMAC can also be directly integrated with an external ciphering engine in an AEAD mode. Every design decision is thoroughly justified and supported by the results of our cryptanalysis and simulations. Additionally, we introduce an aggregated mode version, SMAC-1xn, in which software performance reaches up to 925 Gbps (around 0.038 cycles per byte) for long messages in a single thread. To the best of our knowledge, SMAC achieves a record-breaking software performance compared to all known MAC engines. https://tosc.iacr.org/index.php/ToSC/article/view/12070
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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A New Stand-Alone MAC Construct Called SMAC ; volume:2025 ; number:1 ; year:2025
IACR transactions on symmetric cryptology ; 2025, Heft 1 (2025)
- Creator
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Wang, Dachao
Maximov, Alexander
Ekdahl, Patrik
Johansson, Thomas
- DOI
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10.46586/tosc.v2025.i1.5-43
- URN
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urn:nbn:de:101:1-2503121757163.762200383218
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:30 AM CEST
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Associated
- Wang, Dachao
- Maximov, Alexander
- Ekdahl, Patrik
- Johansson, Thomas
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