Blog

Aug 6, 2026 · 12 min read

HEnbane: Why 2¹⁰¹ Keys Did Not Mean 2¹⁰¹ Work

How GRAFHEN's public rewriting relations enable equivalent-key recovery, and what the break says about turning complex mathematic into cryptographic evidence.

May 23, 2026 · 25 min read

Bivariate CKKS

CKKS without a prime chain: the bivariate representation in poulpy.

Apr 18, 2026 · 4 min read

A Zoo of Security Notions for FHE

An interactive taxonomy of cryptographic security notions for Fully Homomorphic Encryption - formal definitions, an implication map, labelled transform routes, a beginner-friendly primer, and games.

Mar 30, 2026 · 8 min read

FHE Security for Sparse Keys

What sparse keys are, why they matter for FHE performance, and how to estimate their concrete security with the lattice estimator and precomputed tables.

Oct 8, 2025 · 5 min read

Discrete CKKS Functional Bootstrapping

Introduction to CKKS functional bootstrapping for evaluating (large) LUTs.

Jul 25, 2025 · 5 min read

OpenFHE Crash Course

Install, run examples and start developing with OpenFHE.