Yubikey unreliability

Gpg4win help-en
1

Hi,

I am trying to use a Yubikey to authenticate to a Bitbucket Server (Stash) using Sourctree with GPG4Win acting as pageant. I have it mostly working, but sometimes it appears to get hung. Usually if it hangs, I am able to fix the issue by running the following batch file:

taskkill /im pageant.exe
gpg-connect-agent killagent /bye
TIMEOUT 2
gpg-connect-agent /bye

The problem is that even after running the batch file, sometimes it remains hung. I have tried many things to resolve this including killing gpg-agent, killing scdaemon, unplugging/replugging the Yubikey, trying gpg --card-edit, etc. The only thing that I have found 100% reliable is to completely reboot the computer.

The symptom of hung that I am seeing is that when I try to fetch/push/pull using SourceTree, it doesn’t popup pinentry. In addition, when it is hung gpg --card-edit says:
gpg: selecting openpgp failed: Card error
gpg: OpenPGP card not available: Card error

Is there anything I can look at to figure out what is getting hung?

Thanks for any help!

2

Hi Paul,
you try to enable more diagnostic message to see what is going on.

You’ll get some pointers from http://wiki.gnupg.org/TroubleShooting

Also consider asking on the mailinglist, once you have more logs
and give more speficic version numbers.

Best,
Bernhard

3

Thanks for the advice. I turned on log for GPG Agent and the Smartcard Daemon. If I can’t figure it out from that I’ll post to the mailing list.