create_account_key_json.py

#!/usr/bin/env python
# creates file account_key.json for simp_le.py

from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.asymmetric import rsa
from acme import jose
key=jose.JWKRSA(key=rsa.generate_private_key(public_exponent=65537, key_size=4096, backend=default_backend()))
with open('account_key.json', 'wb') as persist_file:
    persist_file.write(key.json_dumps())