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# Copyright (C) 2003-2011 Jeff Forcier <>
# This file is part of ssh.
# 'ssh' is free software; you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; either version 2.1 of the License, or (at your option)
# any later version.
# 'ssh' is distrubuted in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
# You should have received a copy of the GNU Lesser General Public License
# along with 'ssh'; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA.
is a module for python 2.3 or greater that implements the SSH2 protocol for
secure (encrypted and authenticated) connections to remote machines. Unlike
SSL (aka TLS), the SSH2 protocol does not require hierarchical certificates
signed by a powerful central authority. You may know SSH2 as the protocol that
replaced C{telnet} and C{rsh} for secure access to remote shells, but the
protocol also includes the ability to open arbitrary channels to remote
services across an encrypted tunnel. (This is how C{sftp} works, for example.)
The high-level client API starts with creation of an L{SSHClient} object.
For more direct control, pass a socket (or socket-like object) to a
L{Transport}, and use L{start_server <Transport.start_server>} or
L{start_client <Transport.start_client>} to negoatite
with the remote host as either a server or client. As a client, you are
responsible for authenticating using a password or private key, and checking
the server's host key. I{(Key signature and verification is done by ssh,
but you will need to provide private keys and check that the content of a
public key matches what you expected to see.)} As a server, you are
responsible for deciding which users, passwords, and keys to allow, and what
kind of channels to allow.
Once you have finished, either side may request flow-controlled L{Channel}s to
the other side, which are python objects that act like sockets, but send and
receive data over the encrypted session.
'ssh' is written entirely in python (no C or platform-dependent code) and is
released under the GNU Lesser General Public License (LGPL).
Website: U{}
import sys
if sys.version_info < (2, 2):
raise RuntimeError('You need python 2.2 for this module.')
__author__ = "Jeff Forcier <>"
__version__ = "1.7.13"
__license__ = "GNU Lesser General Public License (LGPL)"
from transport import SecurityOptions, Transport
from client import SSHClient, MissingHostKeyPolicy, AutoAddPolicy, RejectPolicy, WarningPolicy
from auth_handler import AuthHandler
from channel import Channel, ChannelFile
from ssh_exception import SSHException, PasswordRequiredException, \
BadAuthenticationType, ChannelException, BadHostKeyException, \
from server import ServerInterface, SubsystemHandler, InteractiveQuery
from rsakey import RSAKey
from dsskey import DSSKey
from sftp import SFTPError, BaseSFTP
from sftp_client import SFTP, SFTPClient
from sftp_server import SFTPServer
from sftp_attr import SFTPAttributes
from sftp_handle import SFTPHandle
from sftp_si import SFTPServerInterface
from sftp_file import SFTPFile
from message import Message
from packet import Packetizer
from file import BufferedFile
from agent import Agent, AgentKey
from pkey import PKey
from hostkeys import HostKeys
from config import SSHConfig
# fix module names for epydoc
for c in locals().values():
if issubclass(type(c), type) or type(c).__name__ == 'classobj':
# classobj for exceptions :/
c.__module__ = __name__
del c
from common import io_sleep
__all__ = [ 'Transport',
'io_sleep' ]
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