Tag
constant-time
- Jan 23, 2025 Constant-Time AES: Removing the Secret-Dependent Table Lookup Why a 256-byte S-box leaks key bits through cache behaviour, and how bit-slicing and vector permutes replace the lookup without changing the cipher. cryptography
- Feb 1, 2024 Constant-Time Comparison in Credential Checks Why byte-wise equality on secrets leaks prefix information through timing, how the standard constant-time primitives are built, and which comparisons in a login path actually need them. security
- Oct 10, 2023 Constant-Time Arithmetic for Lattice Schemes Which operations in ML-KEM and ML-DSA leak through timing or cache behaviour, and how the standard techniques for secret-dependent branches and indexing apply to polynomial arithmetic. cryptography