使用 Paramiko 进行多重身份验证（密码和密钥）

我有以下代码：

import paramiko
policy = paramiko.client.WarningPolicy()
client = paramiko.client.SSHClient()
client.set_missing_host_key_policy(policy)
username = '...'
password = '...'
file_path = '...'
pkey = paramiko.RSAKey.from_private_key_file(file_path)
client.connect('...', username=username, password=password, pkey=key)
sftp = client.open_sftp() 

从文档来看，它似乎应该有效。一切都成功，但是当代码命中时client.open_sftp它用一个炸弹来轰炸SSHException: Unable to open channel.和交通（从client.get_transport) 处于活动状态但未经过身份验证。我也无法为此启用调试日志记录（我正在尝试logging.getLogger('paramiko').setLevel(logging.DEBUG)没有成功。）

关于我可以从哪里开始调试这个非常模糊的错误消息有什么想法吗？

抱歉回复晚了，但这个问题真的很难找到任何信息，所以我想为其他陷入这个问题的人发布一个解决方案。

在绞尽脑汁试图解决这个问题后，我找到了一个解决方案，这要归功于 Doug Ellwanger 和 Daniel Brownridge 发布的一些代码。该问题似乎是由使用更多交互风格处理多因素身份验证的方式引起的。

import paramiko
import threading

... 

username = '...'
password = '...'
file_path = '...'
pkey = paramiko.RSAKey.from_private_key_file(file_path)
sftpClient = multifactor_auth('...', 22, username, pkey, password)

...

def multifactor_auth_sftp_client(host, port, username, key, password):
    #Create an SSH transport configured to the host
    transport = paramiko.Transport((host, port))
    #Negotiate an SSH2 session
    transport.connect()
    #Attempt authenticating using a private key
    transport.auth_publickey(username, key)
    #Create an event for password auth
    password_auth_event = threading.Event()
    #Create password auth handler from transport
    password_auth_handler = paramiko.auth_handler.AuthHandler(transport)
    #Set transport auth_handler to password handler
    transport.auth_handler = password_auth_handler
    #Aquire lock on transport
    transport.lock.acquire()
    #Register the password auth event with handler
    password_auth_handler.auth_event = password_auth_event
    #Set the auth handler method to 'password'
    password_auth_handler.auth_method = 'password'
    #Set auth handler username
    password_auth_handler.username = username
    #Set auth handler password
    password_auth_handler.password = password
    #Create an SSH user auth message
    userauth_message = paramiko.message.Message()
    userauth_message.add_string('ssh-userauth')
    userauth_message.rewind()
    #Make the password auth attempt
    password_auth_handler._parse_service_accept(userauth_message)
    #Release lock on transport
    transport.lock.release()
    #Wait for password auth response
    password_auth_handler.wait_for_response(password_auth_event)
    #Create an open SFTP client channel
    return transport.open_sftp_client()

我希望这有帮助，它对我的​​项目有用。