Python example of EdDSA signature generation to be used with ZoKrates EdDSA verification.

demo.py

import hashlib
from zokrates.eddsa import PrivateKey, PublicKey
from zokrates.field import FQ
from zokrates.utils import write_for_zokrates_cli
if __name__ == "__main__":
raw_msg = "This is my secret message"
msg = hashlib.sha512(raw_msg.encode("utf-8")).digest()
# sk = PrivateKey.from_rand()
# Seeded for debug purpose
key = FQ(1997011358982923168928344992199991480689546837621580239342656433234255379025)
sk = PrivateKey(key)
sig = sk.sign(msg)
pk = PublicKey.from_private(sk)
is_verified = pk.verify(sig, msg)
print(is_verified)
path = './zokrates_args'
write_for_zokrates_cli(pk, sig, msg, path)