Results 1 to 10 of about 94,459 (177)
Cascading Four Round LRW1 is Beyond Birthday Bound Secure [PDF]
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 +5 more sources
Beyond-Birthday-Bound Security for 4-round Linear Substitution-Permutation Networks
IACR Transactions on Symmetric Cryptology, 2020 Recent works of Cogliati et al. (CRYPTO 2018) have initiated provable treatments of Substitution-Permutation Networks (SPNs), one of the most popular approach to construct modern blockciphers.
Yuan Gao +4 more
doaj +4 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 +6 more sources
On Beyond-Birthday-Bound Security: Revisiting the Development of ISO/IEC 9797-1 MACs
IACR Transactions on Symmetric Cryptology, 2019 ISO/IEC 9797-1 is an international standard for block-cipher-based Message Authentication Code (MAC). The current version ISO/IEC 9797-1:2011 specifies six single-pass CBC-like MAC structures that are capped at the birthday bound security.
Yaobin Shen, Lei Wang
doaj +5 more sources
Beyond-Birthday-Bound Secure Cryptographic Permutations from Ideal Ciphers with Long Keys
IACR Transactions on Symmetric Cryptology, 2020 Coron et al. showed a construction of a 3-round 2n-bit cryptographic permutation from three independent n-bit ideal ciphers with n-bit keys (TCC 2010).
Ryota Nakamichi, Tetsu Iwata
doaj +4 more sources
Key-Reduced Variants of 3kf9 with Beyond-Birthday-Bound Security [PDF]
IACR Cryptology ePrint Archive, 2022 3kf9 is a three-key CBC-type MAC that enhances the standardized integrity algorithm f9 (3GPP-MAC). It has beyond-birthday-bound security and is expected to be a possible candidate in constrained environments when instantiated with lightweight ...
Yaobin Shen, Ferdinand Sibleyras
semanticscholar +4 more sources
Beyond-Birthday-Bound Security Based on Tweakable Block Cipher [PDF]
Designs, Codes and Cryptography, 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.
Christian Forler +3 more
semanticscholar +11 more sources
Tweakable Blockciphers with Beyond Birthday-Bound Security [PDF]
IACR Cryptology ePrint Archive, 2012 Liskov, Rivest and Wagner formalized the tweakable blockcipher TBC primitive at CRYPTO'02. The typical recipe for instantiating a TBC is to start with a blockcipher, and then build up a construction that admits a tweak. Almost all such constructions enjoy provable security only to the birthday bound, and the one that does achieve security beyond the ...
Will Landecker +2 more
openaire +2 more sources
Constructions of Beyond-Birthday Secure PRFs from Random Permutations, Revisited [PDF]
Entropy, 2021 In CRYPTO 2019, Chen et al. showed how to construct pseudorandom functions (PRFs) from random permutations (RPs), and they gave one beyond-birthday secure construction from sum of Even-Mansour, namely SoEM22 in the single-key setting.
Jiehui Nan, Ping Zhang, Honggang Hu
doaj +2 more sources
GCM-SIV1.5: Optimal Tradeoff between GCM-SIV1 and GCM-SIV2 [PDF]
Entropy, 2023 GCM-SIV2 is a nonce-based beyond-birthday-bound (BBB)-secure authenticated encryption (AE) mode introduced by Iwata and Minematsu at FSE 2017. However, it is built by combining two instances of GCM-SIV1 and needs eight keys, which increases the costs of ...
Ping Zhang
doaj +2 more sources