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Lecture Notes in Computer Science, 2002 . We propose a new cryptographic primitive, the “tweakable block cipher. ” Such a cipher has not only the usual inputs—message and cryptographic key—but also a third input, the “tweak.
David Wagner
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Tweakable Block Ciphers Secure Beyond the Birthday Bound in the Ideal Cipher Model [PDF]
Lecture Notes in Computer Science, 2018 We propose a new construction of tweakable block ciphers from standard block ciphers. Our construction, dubbed XHX2, is the cascade of two independent XHX block ciphers, so it makes two call to the underlying block cipher using tweak-dependent keys.
Jooyoung Lee, Byeonghak Lee
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Tweakable SM4: How to Tweak SM4 Into Tweakable Block Ciphers?
Journal of Information Security and Applications, 2023Orr Dunkelman, Gaoli Wang, Zhenzhen Guo
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Counter-in-Tweak: Authenticated Encryption Modes for Tweakable Block Ciphers [PDF]
Lecture Notes in Computer Science, 2016 We propose the Synthetic Counter-in-Tweak $$\mathsf {SCT}$$ mode, which turns a tweakable block cipher into a nonce-based authenticated encryption scheme with associated data. The $$\mathsf {SCT}$$ mode combines in a SIV-like manner a Wegman-Carter MAC inspired from $$\mathsf {PMAC}$$ for the authentication part and a new counter-like mode for the ...
Thomas Peyrin, Yannick Seurin
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The MALICIOUS Framework: Embedding Backdoors Into Tweakable Block Ciphers
Lecture Notes in Computer Science, 2020Inserting backdoors in encryption algorithms has long seemed like a very interesting, yet difficult problem. Most attempts have been unsuccessful for symmetric-key primitives so far and it remains an open problem how to build such ciphers.
Thomas Peyrin, Haoyang Wang
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Tweakable Enciphering Schemes Using Only the Encryption Function of a Block Cipher [PDF]
Information Processing Letters, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Palash Sarkar
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Elastic-Tweak: A Framework for Short Tweak Tweakable Block Cipher
2021Tweakable block cipher (TBC), a stronger notion than standard block ciphers, has wide-scale applications in symmetric-key schemes. At a high level, it provides flexibility in design and (possibly) better security bounds. In multi-keyed applications, a TBC with short tweak values can be used to replace multiple keys.
Avik Chakraborti +5 more
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Provable Security of (Tweakable) Block Ciphers Based on Substitution-Permutation Networks [PDF]
Lecture Notes in Computer Science, 2018 Substitution-Permutation Networks (SPNs) refer to a family of constructions which build a wn-bit block cipher from n-bit public permutations (often called S-boxes), which alternate keyless and “local” substitution steps utilizing such S-boxes, with keyed and “global” permutation steps which are non-cryptographic.
Jooyoung Lee +2 more
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Arguments for Tweakable Block Cipher-Based Cryptography
2021As discussed in Sect. 1.3, a TBC is a variant of a BC that accepts a public tweak to change its behavior. TBC-based AEAD designs have a lot of nice performance and security features that we will discuss in this chapter. First, we give an early history of TBC designs in Sect. 4.1. Then, we discuss the impact of the TWEAKEY framework in Sect. 4.2.
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