Get bytes from ed25519 key seed

bytes_from_seed.py

import sys

from jumpscale.loader import j


def from_seed(seed):
    seed = seed.strip()
    if seed.startswith("0x"):
        seed = seed[2:]

    seed_bytes = bytes.fromhex(seed)
    return j.data.nacl.SigningKey(seed_bytes)


def print_key(key):
    pub_key_bytes = [b for b in key.verify_key.encode()]
    priv_key_bytes = [b for b in key.encode()]

    print("public key: ", pub_key_bytes)
    print("private key: ", priv_key_bytes)


if len(sys.argv) < 2:
    print(f"Usage: {sys.argv[0]} <seed as hex>")
else:
    try:
        print_key(from_seed(sys.argv[1]))
    except Exception as e:
        print(f"Error while loading key: {e}")