Browser-based ECDSA demo on secp256k1 and P-256 — sign/verify, live nonce reuse attack with full private key recovery (the PS3 hack, real math), RFC 6979 deterministic nonces verified against test vectors. The signature algorithm behind TLS, Bitcoin, Ethereum, SSH, and WebAuthn. No backends. No simulated math.
cryptography bitcoin ethereum ecdsa secp256k1 side-channel digital-signatures p256 rfc-6979 elliptic-curve-cryptography nonce-reuse crypto-lab ps3-hack
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Updated
Sep 17, 2026 - TypeScript