I am trying to use Paramiko in Python2 for transferring files through SFTP with a private SSH key but it displays this warning:
/usr/lib/python2.7/dist-packages/Crypto/Cipher/blockalgo.py:141:
FutureWarning: CTR mode needs counter parameter, not IV self._cipher = factory.new(key, *args, **kwargs)
In fact it sends the file to the server but can someone explain me what this warning means?
Here is my code:
t = paramiko.Transport((host, port))
key = paramiko.RSAKey.from_private_key_file("/path/to/key.ssh")
t.connect(username="username",password=None, pkey=key)
sftp = paramiko.SFTPClient.from_transport(t)
sftp.put(source, destination)
sftp.close()
t.close()
This is most likely a bug in paramiko
You can try to patch paramiko/transport.py with this patch to make the warning go away
See also the discussion here which references the pull request.
This worked for me.
python-paramiko package installed with apt:apt remove python-paramiko
apt install duplicity python-pip -y
pip install paramiko
Updating Crypto package vanishes the "CTR mode needs counter parameter, not IV" warning in my case:
pip install -U Crypto