'This is MSG_USERAUTH_INFO_RESPONSE.  The server has sent us the
questions it wants us to answer, so we ask the user and sent the
responses.'

def ssh_USERAUTH_PK_OK_keyboard_interactive(self, packet):

    (name, instruction, lang, data) = getNS(packet, 3)
    numPrompts = struct.unpack('!L', data[:4])[0]
    data = data[4:]
    prompts = []
    for i in range(numPrompts):
        (prompt, data) = getNS(data)
        echo = bool(ord(data[0:1]))
        data = data[1:]
        prompts.append((prompt, echo))
    d = self.getGenericAnswers(name, instruction, prompts)
    d.addCallback(self._cbGenericAnswers)
    d.addErrback(self._ebAuth)
