[winswitch] cant attach through ssh after upgrade and reboot

[Antoine Martin]

On 15/10/18 22:57, Thomas Käfer via shifter-users wrote:
> $ xpra version
> 2.4-r20681
> 
> 
> I've got a single xpra session running locally. I can attach it without a
> problem by running
> $ xpra attach
> 
> but it won't work with ssh anymore:
> 
> $ xpra attach ssh:127.0.0.1
> 2018-10-15 17:54:33,147 Xpra gtk2 client version 2.4-r20681 64-bit
> 2018-10-15 17:54:33,148  running on Linux LinuxMint 18.3 sylvia
> 2018-10-15 17:54:33,149  window manager is 'Mutter (Muffin)'
> 2018-10-15 17:54:33,927 GStreamer version 1.8.3 for Python 2.7.12 64-bit
> 2018-10-15 17:54:34,055 No OpenGL_accelerate module loaded: No module named
> OpenGL_accelerate
> 2018-10-15 17:54:34,228 OpenGL enabled with GeForce GT 750M/PCIe/SSE2
> 2018-10-15 17:54:34,973 Connected (version 2.0, client OpenSSH_7.2p2)
> 2018-10-15 17:54:35,082 Unknown exception: Use module
> Crypto.Signature.pkcs1_15 instead
> 2018-10-15 17:54:35,083 Traceback (most recent call last):
> 2018-10-15 17:54:35,083   File
> "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 1782, in run
> 2018-10-15 17:54:35,083     self.kex_engine.parse_next(ptype, m)
> 2018-10-15 17:54:35,083   File
> "/usr/lib/python2.7/dist-packages/paramiko/kex_gex.py", line 88, in
> parse_next
> 2018-10-15 17:54:35,083     return self._parse_kexdh_gex_reply(m)
> 2018-10-15 17:54:35,083   File
> "/usr/lib/python2.7/dist-packages/paramiko/kex_gex.py", line 244, in
> _parse_kexdh_gex_reply
> 2018-10-15 17:54:35,083     self.transport._verify_key(host_key, sig)
> 2018-10-15 17:54:35,083   File
> "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 1605, in
> _verify_key
> 2018-10-15 17:54:35,083     if not key.verify_ssh_sig(self.H, Message(sig)):
> 2018-10-15 17:54:35,084   File
> "/usr/lib/python2.7/dist-packages/paramiko/rsakey.py", line 113, in
> verify_ssh_sig
> 2018-10-15 17:54:35,084     return rsa.verify(hash_obj, (sig,))
> 2018-10-15 17:54:35,084   File
> "/usr/local/lib/python2.7/dist-packages/Crypto/PublicKey/RSA.py", line 372,
> in verify
> 2018-10-15 17:54:35,084     raise NotImplementedError("Use module
> Crypto.Signature.pkcs1_15 instead")
> 2018-10-15 17:54:35,084 NotImplementedError: Use module
> Crypto.Signature.pkcs1_15 instead
> 2018-10-15 17:54:35,084
> 2018-10-15 17:54:35,086 Xpra client failed to connect
> 2018-10-15 17:54:35,086 connection failed: Use module
> Crypto.Signature.pkcs1_15 instead
> xpra initialization error:
>  connection failed: Use module Crypto.Signature.pkcs1_15 instead
Looks like your Linux Mint distro ships a version of paramiko which has
problems handling RSA keys.

You can switch back to the "old" ssh backend with:
xpra attach --ssh="ssh -x"
Or to make this permanent:
echo "ssh=ssh -x" >> ~/.xpra/xpra.conf

I've just tried it with Ubuntu Xenial on which your Linux Mint version
seem to be based and could not reproduce any problems.


> Please help. I got xpra through this repository and it did work without any
> problems until about a week ago.
That would be until yesterday, when 2.4 was released.
> deb https://xpra.org/ xenial main

Cheers,
Antoine

> 
> Kind regards,
> Thomas Käfer
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