darkoperator / darkoperator/Posh-SSH

Issues connecting when "Further authentication" is prompted

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Dominant language
PowerShell
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Description

First, Thanks quite a lot btw, fantastic module! Its saving me quite a bit of lifting to wrap putty/scp in most cases.

Using PoSH-SSH 3.0.0 does not work for me when the server is setup to accept keys, with a prompt during auth for OTP.
Example: auth using "user" with key (empty pass), in PuTTy its seen as:

login as: user
Authenticating with public key "rsa-key...." from agent
Further authentication required
Keyboard-interactive authentication prompts from server:
| OTP Code: 

This is how I try to connect, it fails with "New-SSHSession : No suitable method found to complete authentication (keyboard-interactive)"

$key = C:\temp\test.key
$IP = "10.10.10.10"
$cred = Get-Credential
New-SSHSession -Computername $IP -KeyFile $key -Credential $cred

Any thoughts on how I can pass the OTP code for a proper auth?
I have the OTP token as a variable. I've also tried to set it as the password for the $cred, to no avail.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the New-SSHSession call with a key and an OTP-backed server, then trace the keyboard-interactive authentication path used by Posh-SSH 3.0.0. Done means a session can authenticate with the key and accept the OTP code supplied through the available credentials or prompt mechanism.

Written by the indexing model from the issue text.

Assessment

Tech stack
powershell
Domain
authentication
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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