fastecdsa_p256_keypair_sign_and_verify_quickstart.py

1from fastecdsa import keys, curve, ecdsa
2
3# Generate a key pair
4# Use the P256 curve (also known as secp256r1)
5priv_key, pub_key = keys.gen_keypair(curve.P256)
6
7# The message to sign
8message = "Hello, world!"
9
10# Sign the message (uses SHA256 by default)
11r, s = ecdsa.sign(message, priv_key, curve=curve.P256)
12
13# Verify the signature
14valid = ecdsa.verify((r, s), message, pub_key, curve=curve.P256)
15
16print(f"Signature is valid: {valid}")