utils.py 文件源码

def __init__(self):

        self._salt = settings.SECRET_KEY
        self._kdf = PBKDF2HMAC(
            algorithm=hashes.SHA256(),
            length=32,
            salt=self._salt,
            iterations=100000,
            backend=default_backend()
        )
        self._key = base64.urlsafe_b64encode(self._kdf.derive(settings.SECRET_KEY))
        self._fernet = Fernet(self._key)