Results 21 to 30 of about 449 (128)
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
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Impossible Differential Cryptanalysis of Reduced-Round Tweakable TWINE [PDF]
Progress in Cryptology - AFRICACRYPT 202012th International Conference on Cryptology in Africa, 2020 Tweakable TWINE (T-TWINE) is a new lightweight tweakable block cipher family proposed by Sakamoto $et$ $al$. at IWSEC 2019. T-TWINE is the first Tweakable Block Cipher (TBC) that is built on Generalized Feistel Structure (GFS).
Tolba M, ElSheikh M, Youssef A.
europepmc +2 more sources
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 +3 more
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Duel of the Titans: The Romulus and Remus Families of Lightweight AEAD Algorithms
IACR Transactions on Symmetric Cryptology, 2020 In this article, we propose two new families of very lightweight and efficient authenticated encryption with associated data (AEAD) modes, Romulus and Remus, that provide security beyond the birthday bound with respect to the block-length n.
Tetsu Iwata +3 more
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Forking Tweakable Even-Mansour Ciphers
IACR Transactions on Symmetric Cryptology, 2020 A forkcipher is a keyed, tweakable function mapping an n-bit input to a 2nbit output, which is equivalent to concatenating two outputs from two permutations.
Hwigyeom Kim +2 more
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Weak Tweak-Keys for the CRAFT Block Cipher
IACR Transactions on Symmetric Cryptology, 2022 CRAFT is a lightweight tweakable Substitution-Permutation-Network (SPN) block cipher optimized for efficient protection of its implementations against Differential Fault Analysis (DFA) attacks.
Gregor Leander, Shahram Rasoolzadeh
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Improved Rectangle Attacks on SKINNY and CRAFT
IACR Transactions on Symmetric Cryptology, 2021 The boomerang and rectangle attacks are adaptions of differential cryptanalysis that regard the target cipher E as a composition of two sub-ciphers, i.e., E = E1 ∘ E0, to construct a distinguisher for E with probability p2q2 by concatenating two short ...
Hosein Hadipour +2 more
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Re-Keying Scheme Revisited: Security Model and Instantiations
Applied Sciences, 2019 The re-keying scheme is a variant of the symmetric encryption scheme where a sender (respectively, receiver) encrypts (respectively, decrypts) plaintext with a temporal session key derived from a master secret key and publicly-shared randomness.
Yuichi Komano, Shoichi Hirose
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Improved Meet-in-the-Middle Preimage Attacks against AES Hashing Modes
IACR Transactions on Symmetric Cryptology, 2020 Hashing modes are ways to convert a block cipher into a hash function, and those with AES as the underlying block cipher are referred to as AES hashing modes.
Zhenzhen Bao +4 more
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Tweakable HCTR: A BBB Secure Tweakable Enciphering Scheme [PDF]
, 2018 \textsf{HCTR}, proposed by Wang et al., is one of the most efficient candidates of tweakable enciphering schemes that turns an $n$-bit block cipher into a variable input length tweakable block cipher. Wang et al.
Avijit Dutta, Mridul Nandi
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