Windows native & WSL2 SSH with gpg cards support (e.g. yubikey)

gistfile1.txt

Windows & WSL1 & WSL 2 SSH with gpg cards support

>> Windows & WSL1

Based upon: 
- https://www.antirandom.com/2020/03/ssh-on-windows-with-private-key-on-yubikey/
- https://github.com/benpye/wsl-ssh-pageant

Requirements:
- [win] gpg4win

* Edit %APPDATA%\gnupg\gpg-agent.conf to have
enable-putty-support

* Download WSL-SSH-Pageant (https://github.com/benpye/wsl-ssh-pageant/releases) 
  and install it somewhere e.g. C:\tools\wsl-ssh-pageant

Testing:
- Start bridge 
C:\tools\wsl-ssh-pageant\wsl-ssh-pageant-amd64.exe -systray -verbose 
    -wsl C:\tools\wsl-ssh-pageant\wsl-ssh-agent.sock 
    --winssh win-ssh-pageant

- Kill if active and start gpg
gpgconf --kill gpg-agent
& "C:\Program Files (x86)\GnuPG\bin\gpg-connect-agent.exe" /bye

- Set windows env
$env:SSH_AUTH_SOCK="\\.\pipe\win-ssh-pageant"

- Test windows (should show keys in smarcard)
ssh-add -L 

- Set wsl env
export SSH_AUTH_SOCK=/mnt/c/tools/wsl-ssh-pageant/wsl-ssh-agent.sock

-- see first resource for env automation and windows daemons.

>> WSL2
https://github.com/BlackReloaded/wsl2-ssh-pageant