affine.group / Cryptography Notes

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Hi! My name is Aleksei Udovenko and I do research in cryptography. Here you can find my blog posts, solutions for CTF challenges, presentations, etc.

Posts Talks Writeups

Talk18 Mar 2025
Exact Formula for RX-Differential Probability through Modular Addition for All Rotations (FSE 2025)
Writeup30 Dec 2024
hxp 38C3 CTF 2024 - alcoholic_variety (crypto)
Talk06 Sep 2024
OBSCURE: Versatile Software Obfuscation from a Lightweight Secure Element (CHES 2024)
Writeup19 Aug 2024
idekCTF 2024 - summertime (crypto)
Writeup06 Jun 2024
Codegate CTF Preliminaries 2024 - Babylogin (crypto)
Writeup06 Jun 2024
Codegate CTF Preliminaries 2024 - Cogechan_Dating_Game (crypto)
Post25 Nov 2023 Relations between some linear decoding and LPN algorithms
Talk14 Sep 2023
Cryptanalysis of ARX-based White-box Implementations (CHES 2023)
Talk04 Sep 2023
On Division Property and Degree Bounds (BFA 2023)
Writeup03 Aug 2023
corCTF 2023 - Oil-Spill (crypto)
Writeup01 Aug 2023
corCTF 2023 - Superbox (crypto)
Talk19 Jun 2023
Meet-in-the-Filter and Dynamic Counting with Applications to Speck (ACNS 2023)
Talk17 May 2023
From Gray-box to White-box Cryptography (University of Innsbruck)
Talk25 Aug 2022
Revisiting Meet-in-the-Middle Cryptanalysis of SIDH/SIKE with Application to the $IKEp182 Challenge (SAC 2022)
Talk25 Aug 2022
Advancing the Meet-in-the-Filter Technique: Applications to CHAM and KATAN (SAC 2022)
Talk01 Jul 2022
Applications of Integer Programming in Symmetric-key Cryptography (Separating Integer Points in Polyhedra (Eurandom, TU Eindhoven))
Writeup27 Feb 2022
Codegate CTF 2022 Quals - Happy S-box (Crypto)
Writeup27 Feb 2022
Codegate CTF 2022 Quals - Prime Generator (crypto)
Writeup02 Jan 2022
TetCTF 2022 - all crypto challenges
Talk11 Dec 2021
Convexity of division property transitions: theory, algorithms and compact models (ASIACRYPT 2021)
Writeup28 Nov 2021
Dragon CTF 2021 - CRC Recursive Challenge
Talk22 Oct 2021
Dummy Shuffling against Algebraic Attacks in White-box Implementations (EUROCRYPT 2021)
Writeup07 Mar 2021
Zer0pts CTF 2021 - all crypto challenges (+quantum)
Post03 Feb 2020 STARK-Friendly Hash Challenge
Post02 Feb 2020 This Blog
Talk22 Jan 2020
Attacks on the Legendre PRF (Dagstuhl Seminar 20041)
Talk07 Jun 2019
Finding small solutions to low degree polynomials and an attack on RSA (Lattice Seminar (University of Luxembourg))
Talk19 May 2019
Synthesis tools for white-box implementations (WhibOx 2019)
Talk09 Apr 2019
Design and Cryptanalysis of Symmetric-Key Algorithms in Black and White-box Models (PhD Defense (University of Luxembourg))
Talk05 Dec 2018
Attacks and Countermeasures for White-box Designs (ASIACRYPT 2018)
Talk11 Oct 2017
Optimal First-Order Boolean Masking for Embedded IoT Devices (CARDIS 2017)
Talk09 Mar 2017
Design Strategies for ARX with Provable Bounds: SPARX and LAX (GRSRD 2017)
Talk17 Aug 2016
Cryptanalysis of a Theorem: Decomposing the Only Known Solution to the Big APN Problem (CRYPTO 2016)
Talk22 Mar 2016
Algebraic Insights into the Secret Feistel Network (FSE 2016)

Site version #165 from 2025-03-28 10:05:09 (CET)