Cryptography Lab

Elliptic Curve Cryptography Playground

Interactive sandbox for small prime fields. Visualize points, double-and-add steps, and orders. Educational only—do not use with real secrets.

Elliptic-curve cryptography underpins many crypto wallets and blockchains (e.g., secp256k1 in Bitcoin/Ethereum, Ed25519 in Solana/Ton). This demo uses tiny primes so you can see the math; production chains use large, audited curves and constant-time libraries for real security.

Prime p (≤ 251)

Scalar d (private) for d·G

Base point Gx

Base point Gy

All curve points Base G Path (adds) Result d·G

Δ check

order(G)

d bits

⚠️ Educational only. Not secure, not constant‑time. For production use vetted libraries with safe curves (P‑256, Curve25519, Ed25519).