import os import binascii from Crypto.PublicKey import RSA from typing import Callable 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: 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() class Key(object): def __init__(self, user: str, domain: str, create: bool = True) -> None: 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: self.privkey_pem = f.read() self.privkey = RSA.importKey(self.privkey_pem) self.pubkey_pem = self.privkey.publickey().exportKey('PEM').decode('utf-8') else: if not create: raise Exception('must init private key first') k = RSA.generate(4096) self.privkey_pem = k.exportKey('PEM').decode('utf-8') self.pubkey_pem = k.publickey().exportKey('PEM').decode('utf-8') with open(key_path, 'w') as f: f.write(self.privkey_pem) self.privkey = k