Results 11 to 20 of about 1,484 (155)

Tweaking a block cipher: multi-user beyond-birthday-bound security in the standard model [PDF]

, 2018
In this paper, we present a generic construction to create a secure tweakable block cipher from a secure block cipher. Our construction is very natural, requiring four calls to the underlying block cipher for each call of the tweakable block cipher ...
Cogliati, Benoît-Michel
core   +3 more sources

Tweakable Block Ciphers Secure Beyond the Birthday Bound in the Ideal Cipher Model [PDF]

, 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.
B Cogliati, B Mennink, B Mennink, C Cannière De, CM Adams, G Yang, J Jean, K Minematsu, K Minematsu, L Wang, M Liskov, P Crowley, P Rogaway, T Peyrin, W Landecker, Y Naito   +15 more
core   +2 more sources

Provable Security of (Tweakable) Block Ciphers Based on Substitution-Permutation Networks [PDF]

, 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
Cogliati, Benoît-Michel, Dodis, Yevgeniy, Katz, Jonathan, Lee, Jooyoung, Steinberger, John, Thiruvengadam, Aishwarya, Zhang, Zhe   +6 more
core   +4 more sources

CRAFT: Lightweight Tweakable Block Cipher with Efficient Protection Against DFA Attacks

IACR Transactions on Symmetric Cryptology, 2019
Traditionally, countermeasures against physical attacks are integrated into the implementation of cryptographic primitives after the algorithms have been designed for achieving a certain level of cryptanalytic security.
Christof Beierle, Gregor Leander, Amir Moradi, Shahram Rasoolzadeh   +3 more
doaj   +4 more sources

Highly Secure Nonce-based MACs from the Sum of Tweakable Block Ciphers

IACR Transactions on Symmetric Cryptology, 2020
Tweakable block ciphers (TBCs) have proven highly useful to boost the security guarantees of authentication schemes. In 2017, Cogliati et al. proposed two MACs combining TBC and universal hash functions: a nonce-based MAC called NaT and a deterministic ...
Wonseok Choi, Akiko Inoue, Byeonghak Lee, Jooyoung Lee, Eik List, Kazuhiko Minematsu, Yusuke Naito   +6 more
doaj   +3 more sources

CTET+: A Beyond-Birthday-Bound Secure Tweakable Enciphering Scheme Using a Single Pseudorandom Permutation

IACR Transactions on Symmetric Cryptology, 2021
In this work, we propose a construction of 2-round tweakable substitutionpermutation networks using a single secret S-box. This construction is based on non-linear permutation layers using independent round keys, and achieves security beyond the birthday
Benoît Cogliati, Jordan Ethan, Virginie Lallemand, Byeonghak Lee, Jooyoung Lee, Marine Minier   +5 more
doaj   +1 more source

Tweakable Block Ciphers [PDF]

Journal of Cryptology, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Liskov, Moses, Rivest, Ronald L, Wagner, David   +2 more
openaire   +4 more sources

KLEIN: A New Family of Lightweight Block Ciphers [PDF]

, 2010
Resource-efficient cryptographic primitives become fundamental for realizing both security and efficiency in embedded systems like RFID tags and sensor nodes.
A. Bogdanov, A. Bogdanov, A. Bogdanov, A. Juels, A. Moradi, A. Moradi, A. Satoh, B. Bilgin, B. Collard, C. Cannière De, C. Paar, C. Rolfes, C.H. Lim, C.H. Lim, D. Engels, D. Hong, E. Biham, F.X. Standaert, G. Leander, I. Dinur, J. Daemen, J. Daemen, J. Daemen, J. Daemen, J.Y. Cho, K. Ohkuma, L. Granboulan, L.R. Knudsen, L.R. Knudsen, M. Feldhofer, M. Healy, M. Matsui, M.J.O. Saarinen, O. Özen, P. Hamalainen, R. Könighofer, S. Mangard, S. Nikova, Y.W. Law, Z. Gong   +39 more
core   +19 more sources

Cascading Four Round LRW1 is Beyond Birthday Bound Secure

IACR Transactions on Symmetric Cryptology, 2023
In CRYPTO’02, Liskov et al. introduced the concept of a tweakable block cipher, a novel symmetric key primitive with promising applications. They put forth two constructions for designing such tweakable block ciphers from conventional block ciphers ...
Nilanjan Datta, Shreya Dey, Avijit Dutta, Sougata Mandal   +3 more
doaj   +1 more source

1, 2, 3, Fork: Counter Mode Variants based on a Generalized Forkcipher

IACR Transactions on Symmetric Cryptology, 2021
A multi-forkcipher (MFC) is a generalization of the forkcipher (FC) primitive introduced by Andreeva et al. at ASIACRYPT’19. An MFC is a tweakable cipher that computes s output blocks for a single input block, with s arbitrary but fixed.
Elena Andreeva, Amit Singh Bhati, Bart Preneel, Damian Vizár   +3 more
doaj   +1 more source