uuid_map.py 文件源码

def _encode_uuid_map(userid, uuid, passwd):
    data = 'userid:%s:uuid:%s' % (userid, uuid)

    # FIXME scrypt.encrypt is broken in windows.
    # This is a quick hack. The hostname might not be unique enough though.
    # We could use a long random hash per entry and store it in the file.
    # Other option is to use a different KDF that is supported by cryptography
    # (ie, pbkdf)

    if IS_WIN:
        key = scrypt.hash(passwd, socket.gethostname())
        key = base64.urlsafe_b64encode(key[:32])
        f = Fernet(key, backend=crypto_backend)
        encrypted = f.encrypt(data)
    else:
        encrypted = scrypt.encrypt(data, passwd, maxtime=0.05)
    return base64.urlsafe_b64encode(encrypted)