Optimally Secure Tweakable Block Ciphers with a Large Tweak from n-bit Block Ciphers

We consider the design of a tweakable block cipher from a block cipher whose inputs and outputs are of size n bits. The main goal is to achieve 2n security with a large tweak (i.e., more than n bits). Previously, Mennink at FSE’15 and Wang et al. at Asiacrypt’16 proposed constructions that can achi...

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Bibliographic Details

Published in:	IACR Transactions on Symmetric Cryptology
Main Authors:	Yaobin Shen, François-Xavier Standaert
Format:	Article
Language:	English
Published:	Ruhr-Universität Bochum 2023-06-01
Subjects:	Tweakable Block Cipher Optimal (n-bit) Security Large Tweak
Online Access:	https://tosc.iacr.org/index.php/ToSC/article/view/10977