Results 141 to 150 of about 4,552,353 (162)

Beyond-Birthday-Bound Security with HCTR2: Cascaded Construction and Tweak-Based Key Derivation

Lecture Notes in Computer Science
The block cipher (BC) mode for realizing a variable-input-length strong tweakable pseudorandom permutation (VIL-STPRP), also known as the accordion mode, is a rapidly growing research field driven by NIST\u27s standardization project, which considers AES
Nicky Mouha
exaly   +4 more sources

Beyond Birthday Bound Secure MAC in Faulty Nonce Model [PDF]

, 2019
Encrypt-then-MAC (EtM) is a popular mode for authenticated encryption (AE). Unfortunately, almost all designs following the EtM paradigm, including the AE suites for TLS, are vulnerable against nonce misuse. A single repetition of the nonce value reveals the hash key, leading to a universal forgery attack.
Avijit Dutta, Mridul Nandi, Suprita Talnikar   +2 more
core   +4 more sources

Key-Reduced Variants of 3kf9 with Beyond-Birthday-Bound Security [PDF]

, 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
core   +5 more sources

Generic Attacks Against Beyond-Birthday-Bound MACs [PDF]

Lecture Notes in Computer Science, 2018
In this work, we study the security of several recent MAC constructions with provable security beyond the birthday bound. We consider block-cipher based constructions with a double-block internal state, such as SUM-ECBC, PMAC+, 3kf9, GCM-SIV2, and some ...
Gaëtan Leurent, Mridul Nandi
exaly   +1 more source

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POEx: A beyond-birthday-bound-secure on-line cipher

Cryptography and Communications, 2017
On-line ciphers are convenient building blocks for realizing efficient single- pass encryption. In particular, the trend to limit the consequences of nonce reuses rendered them popular in recent authenticated encryption schemes. While encryption schemes, such as POE, COPE, or the ciphers within ElmE/ElmD concentrated on efficiency, their security ...
Christian Forler, Eik List, Stefan Lucks, Jakob Wenzel 0001   +3 more
openaire   +2 more sources

Beyond-Birthday-Bound Security for Tweakable Even-Mansour Ciphers with Linear Tweak and Key Mixing [PDF]

Lecture Notes in Computer Science, 2015
The iterated Even-Mansour construction defines a block cipher from a tuple of public $n$-bit permutations $(P_1,\ldots,P_r)$ by alternatively xoring some $n$-bit round key $k_i$, $i=0,\ldots,r$, and applying permutation $P_i$ to the state.
Benoit Cogliati, Yannick Seurin
exaly   +1 more source

HCTR++ : A Beyond Birthday Bound Secure HCTR2 Variant.

IACR Cryptol. ePrint Arch.
Current industry-standard block cipher modes of operation, such as CBC and GCM, are fundamentally limited by the birthday bound $O(2^{n/2})$, a constraint that has evolved from a theoretical concern into a practical security bottleneck in contemporary ...
Gülnihal Öztürk, Onur Koçak, Oguz Yayla   +2 more
openaire   +2 more sources

Efficient beyond-birthday-bound secure authenticated encryption modes

Science China Information Sciences, 2018
Ping Zhang 0020, Honggang Hu, Peng Wang 0024   +2 more
openaire   +2 more sources

Quantum attacks on Beyond-Birthday-Bound MACs

Physica A: Statistical Mechanics and Its Applications, 2023
Qiaoyan Wen, Sujuan Qin, Fei Gao
exaly  

Beyond-birthday security for permutation-based Feistel networks

Designs, Codes, and Cryptography, 2021
Chun Guo, Guo Chun
exaly