Results 1 to 10 of about 385 (169)
The QARMAv2 Family of Tweakable Block Ciphers [PDF]
IACR Transactions on Symmetric Cryptology, 2023 We introduce the QARMAv2 family of tweakable block ciphers. It is a redesign of QARMA (from FSE 2017) to improve its security bounds and allow for longer tweaks, while keeping similar latency and area.
Roberto Avanzi +6 more
doaj +9 more sources
Provably Quantum-Secure Tweakable Block Ciphers
IACR Transactions on Symmetric Cryptology, 2021 Recent results on quantum cryptanalysis show that some symmetric key schemes can be broken in polynomial time even if they are proven to be secure in the classical setting.
Akinori Hosoyamada, Tetsu Iwata
doaj +6 more sources
Optimally Secure Tweakable Block Ciphers with a Large Tweak from n-bit Block Ciphers [PDF]
IACR Transactions on Symmetric Cryptology, 2023 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.
Yaobin Shen, François-Xavier Standaert
doaj +8 more sources
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.
Moses Liskov +2 more
exaly +7 more sources
Linear Cryptanalysis: Key Schedules and Tweakable Block Ciphers
IACR Transactions on Symmetric Cryptology, 2017 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.
Thorsten Kranz +2 more
doaj +5 more sources
New Constructions of MACs from (Tweakable) Block Ciphers
IACR Transactions on Symmetric Cryptology, 2017 We propose new constructions of Message Authentication Codes (MACs) from tweakable or conventional block ciphers. Our new schemes are either stateless and deterministic, nonce-based, or randomized, and provably secure either in the standard model for ...
Benoît Cogliati +2 more
doaj +5 more sources
THF: Designing Low-Latency Tweakable Block Ciphers [PDF]
IACR Transactions on Symmetric CryptologyWe introduce the Three-Hash Framework (THF), a new instantiation of the LRW+ paradigm that employs three hash functions to process tweak inputs. We prove that THF achieves beyond-birthday-bound security under standard assumptions.
Jianhua Wang +5 more
doaj +5 more sources
BipBip: A Low-Latency Tweakable Block Cipher with Small Dimensions
Transactions on Cryptographic Hardware and Embedded Systems, 2022 Recently, a memory safety concept called Cryptographic Capability Computing (C3) has been proposed. C3 is the first memory safety mechanism that works without requiring extra storage for metadata and hence, has the potential to significantly enhance the
Yanis Belkheyar +4 more
doaj +5 more sources
Improved meet-in-the-middle attacks on reduced-round tweakable block ciphers Kiasu-BC and Deoxys-BC
Journal of King Saud University - Computer and Information Sciences, 2023 Tweakable block ciphers Kiasu-BC and Deoxys-BC are both the internal block ciphers of the candidates for the CAESAR authenticated encryption competition.
Manman Li, Shaozhen Chen
exaly +4 more sources
Efficient Attack Scheme against SKINNY-64 Based on Algebraic Fault Analysis [PDF]
Entropy, 2023 Lightweight block ciphers are normally used in low-power resource-constrained environments, while providing reliable and sufficient security. Therefore, it is important to study the security and reliability of lightweight block ciphers.
Xing Fang +4 more
doaj +2 more sources