Paper 2024/579
Tight Multi-user Security of Ascon and Its Large Key Extension
Abstract
The Ascon cipher suite has recently become the preferred standard in the NIST Lightweight Cryptography standardization process. Despite its prominence, the initial dedicated security analysis for the Ascon mode was conducted quite recently. This analysis demonstrated that the Ascon AEAD mode offers superior security compared to the generic Duplex mode, but it was limited to a specific scenario: single-user nonce-respecting, with a capacity strictly larger than the key size. In this paper, we eliminate these constraints and provide a comprehensive security analysis of the Ascon AEAD mode in the multi-user setting, where the capacity need not be larger than the key size. Regarding data complexity
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Published elsewhere. Major revision. ACISP 2024
- Keywords
- Asconlarge-key Ascontight securitymulti-userlightweight cryptography
- Contact author(s)
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bishwajit chakrabort @ ntu edu sg
chandranandhar @ gmail com
mridul nandi @ gmail com - History
- 2024-04-16: approved
- 2024-04-15: received
- See all versions
- Short URL
- https://ia.cr/2024/579
- License
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CC BY
BibTeX
@misc{cryptoeprint:2024/579, author = {Bishwajit Chakraborty and Chandranan Dhar and Mridul Nandi}, title = {Tight Multi-user Security of Ascon and Its Large Key Extension}, howpublished = {Cryptology {ePrint} Archive, Paper 2024/579}, year = {2024}, url = {https://eprint.iacr.org/2024/579} }