ERROR: unexpected error - Unable to decrypt PKCS#1 private key

Bug Report

Description

While fetching the data from ssh-remote storage mentioned error is occurring, however while trying this on other machines and other remotes everything is working fine by simply providing the ssh password for authentication. below are the contents of dvc .config

[core]
    remote = storage
[remote "ssh-storage"]
    url = ssh://192.168.1.127/home/cemtrex/Core-Research-Experimentation
    user = cemtrex
    port = 22
    ask_password = true
    #password = ssh_password

Reproduce

After entering the correct ssh password below error appears.

$ dvc fetch -r ssh-storage

Enter a private key passphrase or a password for host '192.168.1.127' port '22' user 'cemtrex': 

ERROR: unexpected error - Unable to decrypt PKCS#1 private key                                                                                                                                

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Expected

As a output to mentioned command the dvc should authenticate with ssh password as ask_password is set in dvc .config and all data artifacts should get downloaded from the remote ssh storage.

Environment information

Output of dvc doctor:

$ dvc doctor
DVC version: 2.8.1 (pip)
---------------------------------
Platform: Python 3.6.9 on Linux-5.4.0-128-generic-x86_64-with-Ubuntu-18.04-bionic
Supports:
        webhdfs (fsspec = 2021.10.0),
        http (aiohttp = 3.8.1, aiohttp-retry = 2.4.6),
        https (aiohttp = 3.8.1, aiohttp-retry = 2.4.6),
        s3 (s3fs = 2021.10.0, boto3 = 1.17.106),
        ssh (sshfs = 2021.11.2)
Cache types: hardlink, symlink
Cache directory: ext4 on /dev/nvme0n1p4
Caches: local
Remotes: s3, ssh
Workspace directory: ext4 on /dev/nvme0n1p4
Repo: dvc, git

Additional Information (if any):

I also tried running this with different dvc versions but still the same issue, it looks like something is wrong with the ssh settings configured in the O.S settings, but i am not able to figure it out exactly what causing the problem. I also referred to issue #3519 but still not able to figure it out.

[pmrowla]

@sudapure the current DVC release is 2.35.1, however DVC now requires Python 3.8 or later. It looks like you are still using 3.6, so you would be unable to update to newer versions of DVC unless you also update Python.

Closing this issue as stale. If you update Python and DVC and can still reproduce this issue in the latest release, feel free to re-open it, but otherwise we cannot provide support for older DVC releases (especially on Python 3.6).

[sudapure]

@dberenbaum i tried with newer dvc==2.10.2 and dvc[ssh]==2.10.2 versions, but problem still persists it’s working with older (2.0.5) version only.