Browser-based elliptic curve demo — point addition, scalar multiplication, and live ECDH across P-256, Curve25519, and secp256k1. Real field arithmetic. No backends. No simulated math.
MITTypeScriptcryptographycurve25519ecdhnoble-curvesscalar-multiplicationsecp256k1visualizationpoint-addition
systemslibrarian.github.io/crypto-lab-curve-lens