Results 51 to 60 of about 126 (69)

Implementing Grover Oracles for Quantum Key Search on AES and LowMC [PDF]

Lecture Notes in Computer Science, 2020
Grover's search algorithm gives a quantum attack against block ciphers by searching for a key that matches a small number of plaintext-ciphertext pairs. This attack uses $O(\sqrt{N})$ calls to the cipher to search a key space of size $N$. Previous work in the specific case of AES derived the full gate cost by analyzing quantum circuits for the cipher ...
Samuel Jaques, Martin Roetteler, Naehrig Michael   +2 more
exaly   +7 more sources

Improved Algebraic Attacks on Round-Reduced LowMC with Single-Data Complexity [PDF]

Lecture Notes in Computer Science
Recently, Picnic3 has introduced several alternative LowMC instances, which prompts the cryptanalysis competition for LowMC. In this paper, we provide new solutions to the competition with full S-box layers under single-data complexity. First, we present
Yongqiang Li, Ren Xingwei, Wang Mingsheng   +2 more
exaly   +4 more sources

Lightweight Implementation of the LowMC Block Cipher Protected Against Side-Channel Attacks

Proceedings of the 4th ACM Workshop on Attacks and Solutions in Hardware Security, 2020
LowMC is a parameterizable block cipher developed for use in Multi-Party Computation (MPC) and Fully Homomorphic Encryption (FHE). In these applications, linear operations are much less expensive in terms of resource utilization compared to the non-linear operations due to their low multiplicative complexity.
Abubakr Abdulgadir, Khaled N Khasawneh, Jens-Peter Kaps   +2 more
exaly   +3 more sources

New cryptanalysis of LowMC with algebraic techniques

Designs, Codes, and Cryptography, 2023
AbstractLowMC is a family of block ciphers proposed by Albrecht et al. at EUROCRYPT 2015, which is tailored specifically for FHE and MPC applications. At ToSC 2018, a difference enumeration attack was given for the cryptanalysis of low-data instances of full LowMCv2 with few applied S-boxes per round.
Hailun Yan, Lei Hu, Jiwu Jing
exaly   +2 more sources

Differential Power Analysis of the Picnic Signature Scheme [PDF]

Lecture Notes in Computer Science, 2021
This work introduces the first differential side-channel analysis of the Picnic Signature Scheme, an alternate candidate in the ongoing competition for post-quantum cryptography by the National Institute of Standards and Technology (NIST).
Thomas Eisenbarth, Eisenbarth Thomas
exaly   +1 more source

The MALICIOUS Framework: Embedding Backdoors into Tweakable Block Ciphers [PDF]

Lecture Notes in Computer Science, 2020
Inserting backdoors in encryption algorithms has long seemed like a very interesting, yet difficult problem. Most attempts have been unsuccessful for symmetric-key primitives so far and it remains an open problem how to build such ciphers. In this work,
Thomas Peyrin, Peyrin Thomas, Wang Haoyang   +2 more
exaly   +2 more sources

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Implementação em Software da Cifra LowMC

Anais do XXII Simpósio Brasileiro de Segurança da Informação e de Sistemas Computacionais (SBSeg 2022), 2022
Nos últimos anos surgiram várias propostas de primitivas simétricas construídas visando a minimização das operações não lineares, dentre elas, a família de cifras de bloco LowMC. Embora o LowMC seja uma primitiva muito atraente para aplicações que se beneficiam da sua baixa complexidade multiplicativa, o fato dele operar diretamente sobre bits torna-o ...
Roberto Cabral, Julio López
openaire   +1 more source

Improved Quantum Analysis of SPECK and LOWMC

Computer Architecture and Design Methodologies
Anubhab BAKSI, Kyungbae Jang, Jang Kyungbae   +2 more
exaly   +2 more sources

FASTA – A Stream Cipher for Fast FHE Evaluation [PDF]

Lecture Notes in Computer Science, 2022
In this paper we propose FASTA, a stream cipher design optimised for implementation over popular fully homomorphic encryption schemes. A number of symmetric encryption ciphers have been recently proposed for FHE applications, e.g. the block cipher LowMC,
CARLOS Cid, Håvard Raddum, Cid CARLOS   +2 more
exaly   +1 more source

A Three-Stage MITM Attack on LowMC from a Single Plaintext-Ciphertext Pair

Lecture Notes in Computer Science
Dongdai Lin, Liu Meicheng, Lin Dongdai   +2 more
exaly   +2 more sources