uuid_map.py 文件源码

def _decode_uuid_line(line, passwd):
    decoded = base64.urlsafe_b64decode(line)
    if IS_WIN:
        key = scrypt.hash(passwd, socket.gethostname())
        key = base64.urlsafe_b64encode(key[:32])
        try:
            f = Fernet(key, backend=crypto_backend)
            maybe_decrypted = f.decrypt(key)
        except Exception:
            return None
    else:
        try:
            maybe_decrypted = scrypt.decrypt(decoded, passwd, maxtime=0.1)
        except scrypt.error:
            return None
    match = re.findall("userid\:(.+)\:uuid\:(.+)", maybe_decrypted)
    if match:
        return match[0]