To use this library in your code:
import crypto.ec
import crypto.ec
// Assuming 'private-key' and 'public-key' are available as ec.EcKey.
message := "Hello world"
key := ec.EcKeyPair.generate --curve="secp256r1"
signature := key.sign message
if key.verify message signature:
print "Signature is valid"
else:
print "Signature is invalid"