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Tweakable Block Ciphers [chapter]

Moses Liskov, Ronald L. Rivest, David Wagner
2002 Lecture Notes in Computer Science  
We suggest that (1) tweakable block ciphers are easy to design, (2) the extra cost of making a block cipher "tweakable" is small, and (3) it is easier to design and prove modes of operation based on tweakable  ...  block ciphers.  ...  We say a tweakable block cipher is chosen-ciphertext secure when Sec E (q, t) is sufficiently small, and we call such a secure tweakable block cipher a "strong tweakable block cipher."  ... 
doi:10.1007/3-540-45708-9_3 fatcat:tcqebkk2zrazlnttollu3mjzey

Tweakable Block Ciphers

Moses Liskov, Ronald L. Rivest, David Wagner
2010 Journal of Cryptology  
We suggest that (1) tweakable block ciphers are easy to design, (2) the extra cost of making a block cipher "tweakable" is small, and (3) it is easier to design and prove modes of operation based on tweakable  ...  block ciphers.  ...  We say a tweakable block cipher is chosen-ciphertext secure when Sec E (q, t) is sufficiently small, and we call such a secure tweakable block cipher a "strong tweakable block cipher."  ... 
doi:10.1007/s00145-010-9073-y fatcat:ksovptleondq3e4id3nybwutga

Iterative Block Ciphers from Tweakable Block Ciphers with Long Tweaks

Ryota Nakamichi, Tetsu Iwata
2020 IACR Transactions on Symmetric Cryptology  
We consider a problem of constructing a secure block cipher from a tweakable block cipher (TBC) with long tweaks.  ...  Given a TBC with n-bit blocks and Γn-bit tweaks for Γ ≥ 1, one of the constructions by Minematsu in DCC 2015 shows that a simple iteration of the TBC for 3d rounds yields a block cipher with dn-bit blocks  ...  Block Ciphers and Tweakable Block Ciphers.  ... 
doi:10.46586/tosc.v2019.i4.54-80 fatcat:7zwqzj63bvcathnsekilgvjawe

Iterative Block Ciphers from Tweakable Block Ciphers with Long Tweaks

Ryota Nakamichi, Tetsu Iwata
2020 IACR Transactions on Symmetric Cryptology  
We consider a problem of constructing a secure block cipher from a tweakable block cipher (TBC) with long tweaks.  ...  Given a TBC with n-bit blocks and Γn-bit tweaks for Γ ≥ 1, one of the constructions by Minematsu in DCC 2015 shows that a simple iteration of the TBC for 3d rounds yields a block cipher with dn-bit blocks  ...  Block Ciphers and Tweakable Block Ciphers.  ... 
doi:10.13154/tosc.v2019.i4.54-80 dblp:journals/tosc/NakamichiI19 fatcat:oxsvra52orhdnego26a4zhn7nu

Provably Quantum-Secure Tweakable Block Ciphers

Akinori Hosoyamada, Tetsu Iwata
2021 IACR Transactions on Symmetric Cryptology  
Liskov, Rivest, and Wagner showed that secure tweakable block ciphers can be constructed from secure block ciphers in the classical setting.  ...  We show the first design of quantum-secure tweakable block ciphers based on quantum-secure block ciphers, and present a provable security bound.  ...  based tweakable block cipher.  ... 
doi:10.46586/tosc.v2021.i1.337-377 fatcat:buc4eytwjfdafloeveuzu5c6te

Efficient Length Doubling From Tweakable Block Ciphers

Yu Long Chen, Atul Luykx, Bart Mennink, Bart Preneel
2017 IACR Transactions on Symmetric Cryptology  
We present a length doubler, LDT, that turns an n-bit tweakable block cipher into an efficient and secure cipher that can encrypt any bit string of length [n..2n − 1].  ...  ciphers are strong tweakable pseudorandom permutations.  ...  a tweakable block cipher and mix a mix function.  ... 
doi:10.13154/tosc.v2017.i3.253-270 dblp:journals/tosc/ChenLMP17 fatcat:746lj4x5rbd6rls2xzpic7blki

Efficient Length Doubling From Tweakable Block Ciphers

Yu Long Chen, Atul Luykx, Bart Mennink, Bart Preneel
2017 IACR Transactions on Symmetric Cryptology  
We present a length doubler, LDT, that turns an n-bit tweakable block cipher into an efficient and secure cipher that can encrypt any bit string of length [n..2n − 1].  ...  ciphers are strong tweakable pseudorandom permutations.  ...  a tweakable block cipher and mix a mix function.  ... 
doi:10.46586/tosc.v2017.i3.253-270 fatcat:ccaqbjztgzex5fsasx2qwvtw6u

Linear Cryptanalysis: Key Schedules and Tweakable Block Ciphers

Thorsten Kranz, Gregor Leander, Friedrich Wiemer
2017 IACR Transactions on Symmetric Cryptology  
This paper serves as a systematization of knowledge of linear cryptanalysis and provides novel insights in the areas of key schedule design and tweakable block ciphers.  ...  Moreover, we investigate how tweakable block ciphers can be analyzed with respect to linear cryptanalysis, a topic that surprisingly has not been scrutinized until now.  ...  Linear Approximations of Tweakable Block Ciphers Tweakable block ciphers, introduced by Liskov et al. [24] , are an important cryptographic primitive.  ... 
doi:10.13154/tosc.v2017.i1.474-505 dblp:journals/tosc/KranzLW17 fatcat:hdq2aodubbgzdltzc7n75qvjum

New Constructions of MACs from (Tweakable) Block Ciphers

Benoît Cogliati, Jooyoung Lee, Yannick Seurin
2017 IACR Transactions on Symmetric Cryptology  
We propose new constructions of Message Authentication Codes (MACs) from tweakable or conventional block ciphers.  ...  for block cipher-based ones.  ...  a tweakable block cipher.  ... 
doi:10.46586/tosc.v2017.i2.27-58 fatcat:pq5kl25crfhcpndqfhrkuz7ucu

New Constructions of MACs from (Tweakable) Block Ciphers

Benoît Cogliati, Jooyoung Lee, Yannick Seurin
2017 IACR Transactions on Symmetric Cryptology  
We propose new constructions of Message Authentication Codes (MACs) from tweakable or conventional block ciphers.  ...  for block cipher-based ones.  ...  a tweakable block cipher.  ... 
doi:10.13154/tosc.v2017.i2.27-58 dblp:journals/tosc/CogliatiLS17 fatcat:vv6g4x652zbbdjk6oym6bolwua

Linear Cryptanalysis: Key Schedules and Tweakable Block Ciphers

Thorsten Kranz, Gregor Leander, Friedrich Wiemer
2017 IACR Transactions on Symmetric Cryptology  
This paper serves as a systematization of knowledge of linear cryptanalysis and provides novel insights in the areas of key schedule design and tweakable block ciphers.  ...  Moreover, we investigate how tweakable block ciphers can be analyzed with respect to linear cryptanalysis, a topic that surprisingly has not been scrutinized until now.  ...  Linear Approximations of Tweakable Block Ciphers Tweakable block ciphers, introduced by Liskov et al. [24] , are an important cryptographic primitive.  ... 
doi:10.46586/tosc.v2017.i1.474-505 fatcat:clhcq4hjizdftjz2osxpsuxbmm

Almost-Minimal-Round BBB-Secure Tweakable Key-Alternating Feistel Block Cipher

Ming Jiang, Lei Wang
2021 Symmetry  
This paper focuses on designing a tweakable block cipher via by tweaking the Key-Alternating Feistel (KAF for short) construction. Very recently Yan et al. published a tweakable KAF construction.  ...  More specifically, we rigorously prove that 6-round tweakable KAF cipher is BBB- secure.  ...  Tweakable Block Cipher A tweakable block cipher is a family of permutations indexed by the secret key and the public tweak.  ... 
doi:10.3390/sym13040649 fatcat:cwkvjyiu4fe5dfv4wydf5qkdga

Beyond-Birthday-Bound Security Based on Tweakable Block Cipher [chapter]

Kazuhiko Minematsu
2009 Lecture Notes in Computer Science  
We also study how to build such tweakable block ciphers from ordinary block ciphers, which may be of independent interest.  ...  Our proposal is provably secure against birthday attacks, if underlying tweakable block cipher is also secure against birthday attacks.  ...  Conclusion We described the extended Naor-Reingold (ENR), which converts an n-bit block tweakable block cipher into a 2n-bit block cipher.  ... 
doi:10.1007/978-3-642-03317-9_19 fatcat:whajzn3o4ndrpffrote4lcsbsy

Counter-in-Tweak: Authenticated Encryption Modes for Tweakable Block Ciphers [chapter]

Thomas Peyrin, Yannick Seurin
2016 Lecture Notes in Computer Science  
block cipher rather than on the plaintext input.  ...  We propose the Synthetic Counter-in-Tweak (SCT) mode, which turns a tweakable block cipher into a nonce-based authenticated encryption scheme (with associated data).  ...  Tweakable Block Ciphers.  ... 
doi:10.1007/978-3-662-53018-4_2 fatcat:h3vjushdvbeazfe4nuk6doeupq

Tweakable enciphering schemes using only the encryption function of a block cipher

Palash Sarkar
2011 Information Processing Letters  
A new construction of block cipher based tweakable enciphering schemes (TES) is described.  ...  The major improvement over existing TES is that the construction uses only the encryption function of the underlying block cipher.  ...  Naor and Reingold [14, 13] described a construction of SPRP using a block cipher. The notion of tweakable block cipher was introduced in [8] .  ... 
doi:10.1016/j.ipl.2011.06.014 fatcat:l2irw2ulnvgolmnfdfk7ljekom
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