Results 21 to 30 of about 385 (169)
Efficient Length Doubling From Tweakable Block Ciphers
IACR Transactions on Symmetric Cryptology, 2017 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].
Yu Long Chen +3 more
doaj +7 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 +6 more
doaj +4 more sources
Elastic-Tweak: A Framework for Short Tweak Tweakable Block Cipher [PDF]
, 2021 Tweakable 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.
Nandi, Mridul +5 more
core +4 more sources
Dialga: A Family of Low-Latency Tweakable Block Ciphers Using Multiple Linear Layers
IACR Transactions on Symmetric CryptologyIn this paper, we propose Dialga, a family of low-latency tweakable block ciphers designed to support 128/256-bit tweaks and 256-bit keys. Dialga achieves significantly small latency by leveraging multiple novel strategies.
Subhadeep Banik +7 more
doaj +2 more sources
Offset-Based BBB-Secure Tweakable Block-ciphers with Updatable Caches [PDF]
, 2022 A nonce-respecting tweakable blockcipher is the building-block for the OCB authenticated encryption mode. An XEX-based TBC is used to process each block in OCB.
Arghya Bhattacharjee +2 more
core +3 more sources
CRAFT: Lightweight Tweakable Block Cipher with Efficient Protection Against DFA Attacks [PDF]
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 +3 more
doaj +4 more sources
A Note on the CLRW2 Tweakable Block Cipher Construction [PDF]
IACR Cryptol. ePrint Arch., 2014 In this note, we describe an error in the proof for CLRW2 given by Landecker et al. in their paper at CRYPTO 2012 on the beyond-birthday-bound security for tweakable block ciphers.
Gordon Procter
core +2 more sources
Impossible Differential Cryptanalysis of Reduced-Round Tweakable TWINE [PDF]
Lecture Notes in Computer Science, 2020 Mohamed Tolba +2 more
exaly +1 more source
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 +3 more
doaj +1 more source
IET Networks, EarlyView., 2023 We utilise a metaheuristic optimisation method, inspired by nature, called the Lévy‐flight firefly algorithm (LFA), to tackle the power regulation and user grouping in the NOMA systems. Abstract The non‐orthogonal multiple access strategies have shown promise to boost fifth generation and sixth generation wireless networks' spectral efficiency and ...
Zaid Albataineh +4 more
wiley +1 more source