microblog.pub/utils/key.py
2019-04-17 23:33:15 +02:00

43 lines
1.1 KiB
Python

import binascii
import os
from typing import Callable
from little_boxes.key import Key
KEY_DIR = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "config")
def _new_key() -> str:
return binascii.hexlify(os.urandom(32)).decode("utf-8")
def get_secret_key(name: str, new_key: Callable[[], str] = _new_key) -> str:
"""Loads or generates a cryptographic key."""
key_path = os.path.join(KEY_DIR, f"{name}.key")
if not os.path.exists(key_path):
k = new_key()
with open(key_path, "w+") as f:
f.write(k)
return k
with open(key_path) as f:
return f.read()
def get_key(owner: str, _id: str, user: str, domain: str) -> Key:
""""Loads or generates an RSA key."""
k = Key(owner, _id)
user = user.replace(".", "_")
domain = domain.replace(".", "_")
key_path = os.path.join(KEY_DIR, f"key_{user}_{domain}.pem")
if os.path.isfile(key_path):
with open(key_path) as f:
privkey_pem = f.read()
k.load(privkey_pem)
else:
k.new()
with open(key_path, "w") as f:
f.write(k.privkey_pem)
return k