Results 11 to 20 of about 1,017,696 (185)
Tweakable TWINE: Building a Tweakable Block Cipher on Generalized Feistel Structure
Lecture Notes in Computer Science, 2019 Tweakable block cipher (TBC) is an extension of conventional block cipher. We study how to build a TBC based on generalized Feistel structure (GFS), a classical block cipher construction. While known dedicated TBC proposals are based on substitution-permutation network (SPN), GFS has not been used for building TBC.
Takanori Isobe +2 more
exaly +3 more sources
Beyond-Birthday-Bound Security Based on Tweakable Block Cipher [PDF]
Lecture Notes in Computer Science, 2009 This paper studies how to build a 2n-bit block cipher which is hard to distinguish from a truly random permutation against attacks with q ≈ 2 n/2 queries, i.e., birthday attacks. Unlike previous approaches using pseudorandom functions, we present a simple and efficient proposal using a tweakable block cipher as an internal module.
Kazuhiko Minematsu
exaly +5 more sources
Generalized Feistel Structures Based on Tweakable Block Ciphers
IACR Transactions on Symmetric Cryptology, 2022 A generalized Feistel structure (GFS) is a classical approach to construct a block cipher from pseudorandom functions (PRFs). Coron et al. at TCC 2010 instantiated a Feistel structure with a tweakable block cipher (TBC), and presented its provable ...
Kazuki Nakaya, Tetsu Iwata
doaj +8 more sources
Tweakable ForkCipher from Ideal Block Cipher [PDF]
IACR Communications in CryptologyIn ASIACRYPT 2019, Andreeva et al. introduced a new symmetric key primitive called the forkcipher, designed for lightweight applications handling short messages. A forkcipher is a keyed function with a public tweak, featuring fixed-length input and fixed-length (expanding) output.
Sougata Mandal
core +7 more sources
Tweakable enciphering schemes using only the encryption function of a block cipher [PDF]
Information Processing Letters, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Palash Sarkar
exaly +3 more sources
Context-Committing Authenticated Encryptions Using Tweakable Stream Cipher
IEEE AccessCommitting security of authenticated encryption schemes is an emerging area and an active field of research and is highly motivated by real-world scenarios.
Donghoon Chang, Munawar Hasan
exaly +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 +5 more sources
HXTS: An efficient tweakable block cipher solution for enhancing sector data security
ArrayAiming at the problems of low encryption efficiency and weak security of HCTR and XTS, this paper designs an efficient tweakable block cipher solution—HXTS to enhance the security of sector data.
Zhe Yu +6 more
doaj +2 more sources
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 +5 more
doaj +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