Results 11 to 20 of about 1,010,918 (180)
New Constructions of MACs from (Tweakable) Block Ciphers [PDF]
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 +6 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 +6 more sources
BipBip: A Low-Latency Tweakable Block Cipher with Small Dimensions [PDF]
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
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
exaly +6 more sources
Lightweight Authenticated Encryption Mode of Operation for Tweakable Block Ciphers [PDF]
Transactions on Cryptographic Hardware and Embedded Systems, 2019 The use of a small block length is a common strategy when designing lightweight (tweakable) block ciphers (TBCs), and several 64-bit primitives have been proposed.
Yusuke Naito, Takeshi Sugawara
doaj +8 more sources
Zero-Correlation Attacks on Tweakable Block Ciphers with Linear Tweakey Expansion [PDF]
IACR Transactions on Symmetric Cryptology, 2019 The design and analysis of dedicated tweakable block ciphers is a quite recent and very active research field that provides an ongoing stream of new insights.
Ralph Ankele +5 more
doaj +8 more sources
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
exaly +3 more sources
A Security Analysis of Deoxys and its Internal Tweakable Block Ciphers
IACR Transactions on Symmetric Cryptology, 2017 In this article, we provide the first independent security analysis of Deoxys, a third-round authenticated encryption candidate of the CAESAR competition, and its internal tweakable block ciphers Deoxys-BC-256 and Deoxys-BC-384.
Carlos Cid +4 more
doaj +4 more sources
A General Construction of Tweakable Block Ciphers and Different Modes of Operations [PDF]
Lecture Notes in Computer Science, 2006 This work builds on earlier work by Rogaway at Asiacrypt 2004 on tweakable block cipher (TBC) and modes of operations. Our first contribution is to generalize Rogaway's TBC construction by working over a ring and by the use of a masking sequence of functions. The ring can be instantiated as either GF or as .
Debrup Chakraborty, Palash Sarkar
exaly +4 more sources
On Hashing with Tweakable Ciphers [PDF]
, 2009 Cryptographic hash functions are often built on block ciphers in order to reduce the security analysis of the hash to that of the cipher, and to minimize the hardware size. Well known hash constructs are used in international standards like MD5 and SHA-1.
R. C.-W. Phan +3 more
core +7 more sources