问如何解决python SFTP/paramiko connexion中不兼容的ssh服务器(不可接受的密码)？
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Stack Overflow用户

提问于 2022-06-30 04:16:51

回答 1查看 291关注 0票数 0

我是python的初学者，我希望通过SFTP协议自动化从我的计算机(windows 1021H2)到Linux服务器(Rocky Linux8.6)的文件传输。我使用带有密码的密钥对进行身份验证。

连接不成功。我尝试了很多组合，也经历了很多关于堆叠溢出的问题，但没有成功.

import pysftp

host,port = 'monServeur.domaine.fr',22
username='pmartin'
pkey='C:/Users/pmartin/.ssh/myPrivateKey'
passphrase='mypassphrase'

with pysftp.Connection(host=host, username=username, private_key=pkey, port=22, private_key_pass=passphrase) as sftp:
    with sftp.cwd('/home/pmartin'):
        for entry in sftp.listdir_attr():
            print(entry.filename)

返回的错误：

C:\programmation\python>"C:/Program Files/Python310/python.exe" c:/programmation/python/ftptls.py
Exception (client): Incompatible ssh server (no acceptable ciphers)
Traceback (most recent call last):
  File "C:\Users\omarie\AppData\Roaming\Python\Python310\site-packages\paramiko\transport.py", line 2138, in run
    self._handler_table[ptype](self, m)
  File "C:\Users\omarie\AppData\Roaming\Python\Python310\site-packages\paramiko\transport.py", line 2258, in _negotiate_keys
    self._parse_kex_init(m)
  File "C:\Users\omarie\AppData\Roaming\Python\Python310\site-packages\paramiko\transport.py", line 2511, in _parse_kex_init
    raise IncompatiblePeer(
paramiko.ssh_exception.IncompatiblePeer: Incompatible ssh server (no acceptable ciphers)

Traceback (most recent call last):
  File "c:\programmation\python\ftptls.py", line 9, in <module>
    with pysftp.Connection(host, username, pkey, None, 22, passphrase, ['aes128-cbc','aes192-cbc','aes256-cbc','aes128-ctr','aes192-ctr','aes256-ctr']) as sftp:
  File "C:\Users\omarie\AppData\Roaming\Python\Python310\site-packages\pysftp\__init__.py", line 143, in __init__
    self._transport.connect(**self._tconnect)
  File "C:\Users\omarie\AppData\Roaming\Python\Python310\site-packages\paramiko\transport.py", line 1346, in connect
    self.start_client()
  File "C:\Users\omarie\AppData\Roaming\Python\Python310\site-packages\paramiko\transport.py", line 699, in start_client
    raise e
  File "C:\Users\omarie\AppData\Roaming\Python\Python310\site-packages\paramiko\transport.py", line 2138, in run
    self._handler_table[ptype](self, m)
  File "C:\Users\omarie\AppData\Roaming\Python\Python310\site-packages\paramiko\transport.py", line 2258, in _negotiate_keys
    self._parse_kex_init(m)
  File "C:\Users\omarie\AppData\Roaming\Python\Python310\site-packages\paramiko\transport.py", line 2511, in _parse_kex_init
    raise IncompatiblePeer(
paramiko.ssh_exception.IncompatiblePeer: Incompatible ssh server (no acceptable ciphers)

版本：

Python3.10.4(tag/v3.10.4:9d38120，MAR232022，23:13:41) MSC v.1929 64位(AMD64) on win32

单元：

名称:密码学版本:37.0.2
名称: paramiko版本:2.11.0
名称: pysftp版本: 0.2.9

服务器上的密码：

[monServeur ~/.ssh]$ ssh -Q cipher
3des-cbc
aes128-cbc
aes192-cbc
aes256-cbc
rijndael-cbc@lysator.liu.se
aes128-ctr
aes192-ctr
aes256-ctr
aes128-gcm@openssh.com
aes256-gcm@openssh.com
chacha20-poly1305@openssh.com

我试图像这样在pysftp命令中添加密码，但没有成功：

with pysftp.Connection(host, username, pkey, None, 22, passphrase, ['aes128-cbc','aes192-cbc','aes256-cbc','aes128-ctr','aes192-ctr','aes256-ctr']) as sftp:

我可以用FileZilla和数码鸭完成我的传输，没有这个“密码问题”，密钥对和密码。

谁能给我个线索吗？

添加: paramiko日志文件

DEBUG:paramiko.transport:starting thread (client mode): 0x1bf1a6b0
DEBUG:paramiko.transport:Local version/idstring: SSH-2.0-paramiko_2.11.0
DEBUG:paramiko.transport:Remote version/idstring: SSH-2.0-OpenSSH_8.0
INFO:paramiko.transport:Connected (version 2.0, client OpenSSH_8.0)
DEBUG:paramiko.transport:=== Key exchange possibilities ===
DEBUG:paramiko.transport:kex algos: curve25519-sha256@libssh.org
DEBUG:paramiko.transport:server key: rsa-sha2-512, rsa-sha2-256, ssh-rsa, ssh-ed25519
DEBUG:paramiko.transport:client encrypt: chacha20-poly1305@openssh.com, aes256-gcm@openssh.com   
DEBUG:paramiko.transport:server encrypt: chacha20-poly1305@openssh.com, aes256-gcm@openssh.com   
DEBUG:paramiko.transport:client mac: hmac-sha2-512-etm@openssh.com, hmac-sha2-256-etm@openssh.com
DEBUG:paramiko.transport:server mac: hmac-sha2-512-etm@openssh.com, hmac-sha2-256-etm@openssh.com
DEBUG:paramiko.transport:client compress: none, zlib@openssh.com
DEBUG:paramiko.transport:server compress: none, zlib@openssh.com
DEBUG:paramiko.transport:client lang: <none>
DEBUG:paramiko.transport:server lang: <none>
DEBUG:paramiko.transport:kex follows: False
DEBUG:paramiko.transport:=== Key exchange agreements ===
DEBUG:paramiko.transport:Kex: curve25519-sha256@libssh.org
DEBUG:paramiko.transport:HostKey: ssh-ed25519
ERROR:paramiko.transport:Exception (client): Incompatible ssh server (no acceptable ciphers)

python

paramiko

pysftp

回答 1

Stack Overflow用户

发布于 2022-06-30 10:47:40

您的服务器只支持两个专有的OpenSSH密码：

DEBUG:paramiko.transport:client encrypt: chacha20-poly1305@openssh.com, aes256-gcm@openssh.com   
DEBUG:paramiko.transport:server encrypt: chacha20-poly1305@openssh.com, aes256-gcm@openssh.com