Tag
cryptanalysis
- Apr 28, 2026 Differential and Linear Cryptanalysis as Trail Counting The two classical attacks reduce to finding high-probability differentials and high-bias linear approximations, and both are bounded by the same active S-box count. cryptography
- Apr 4, 2025 Basis Reduction in Practice: LLL, BKZ and the Delta Parameter How the block size K in BKZ sets the security estimate for lattice schemes, why LLL is only the preprocessing step, and what a solver actually does with the reduced basis. cryptography
- May 15, 2024 How Differential Cryptanalysis Broke SHA-1 The modular-difference search, message-modification steps, and near-collision blocks that turn a 160-bit digest into two colliding PDFs, and why the margin was thinner than the bound implied. cryptography
- Nov 17, 2022 Colossus and the Counting Attack on Lorenz Wheel Settings How a hypothesised wheel pattern is compared against ciphertext character by character, how valve counters accumulate the statistic, and why the machine was built for one search. computing history