Calculator reference
Verification evidence and limitations →
What it calculates
Generates elliptic-curve keys and signs or verifies messages with ECDSA.
Inputs and methods
P-256, P-384, P-521 or secp256k1; HEX private scalars and SEC1 public keys; HEX or ASCII messages.
Worked example
Generate a P-256 pair, sign ASCII Hello, then verify using its public key and the unchanged message.
Signature verification: valid Change message to Hello!: invalid
Specification and limits
Key generation is random. Signature encoding and the curve-specific hash must match the verifier.
noble-curves documentation ↗