PowerShell / PowerShell/Win32-OpenSSH

ssh-add -K fails.

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Description

Problem statement
Win32-OpenSSH introduced FIDO support in V8.9.0.0.
ssh-add -K is supposed to "Load resident keys from a FIDO authenticator".

Win32-OpenSSH currently doesn't support this option.

Work around
Download the keys using ssh-keygen.exe -K.
ssh-keygen -K requires direct communication with the FIDO token, so it needs to be issued from an elevated prompt.

Contributor guide

Open the contributing guide

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

Begin with the existing ssh-add -K behavior and compare it with the documented ssh-keygen -K workaround; the issue provides no source file or test entry point. Done means Win32-OpenSSH's ssh-add can load resident keys from a FIDO authenticator without requiring the workaround.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
authentication, operating-systems, security
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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