use gpg-agent for ssh login

[Alexander Paetzelt | Nitrokey]

Hi,

did you install gnupg2 as well? OpenPGP Card 3.3 is not supported by
oldoldold version 1.4 ... I don't know if gnupg2 is installed by default
on Kubuntu and I don't know if gnupg2 is recent enough on 16.04 either.
You may install the stable debian ones if needed. They should be able to
work with the card.

Kind regards
Alex


On 03.05.2018 10:09, Jonas Hegemann wrote:
> Hi,
>
> I'm trying to configure gpg-agent and SSH with a GnuPG Key Card Version
> 3.3, but ssh only drops the message: "the agent has no identities." in
> response to "ssh-add -L".
>
> My system:
> Linux (K)ubuntu 16.04
>
> My software versions:
> gpg 1.4.20
> gpg-agent 2.1.11
> libgcrypt 1.6.5
>
> My configuration:
> Starting the agent:
> killall scdaemon
> killall gpg-agent
> eval $( gpg-agent --daemon --enable-ssh-support )
> Setting the environment variables:
> SSH_AGENT_PID=2588
> GPG_AGENT_INFO=$HOME/.gnupg/S.gpg-agent:2588:1
> SSH_AUTH_SOCK=$HOME/.gnupg/S.gpg-agent.ssh
> GPG_TTY=/dev/pts/1 (corresponding to used terminal)
>
> note that 2588 is the PID of the gpg-agent here.
> scdaemon is running (started by gpg-agent)
> pcscd is NOT running.
>
> .gnupg/gpg.conf:
> use-agent
>
> .gnupg/gpg-agent.conf:
> enable-ssh-support
> default-cache-ttl 21600
> default-cache-ttl-ssh 21600
> pinentry-program /usr/bin/pinentry-gtk-2
>
> After carefully reviewing my configuration and restarting my agent I still
> get a message "The agent has no identities." in response to "ssh-add -L".
> However, the status of the smart-card looks fine and all the keys are
> present on the card. Why does ssh not see the keys? Does anyone have a
> suggestion for changes? Are there specific issues with the card version
> 3.3?
>
> Thanks in advance
> Jonas
>
>
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