Yubico Forum

I created a 4096-bit gpg-key consisting of:
the master-key and 3 sub-keys for signing, decrypting, authenticating on a secure offline-PC.
From that key I exported just the 3 subkeys by:

copied subkeys to one of my laptops, imported them into my keyring and on that laptop transferred the subkeys to my Yubikey4.
All works fine and I just have to plug in the Yubikey and enter the Yubikey-password to use my keys for decryptpting, signing and ssh-authentication - GREAT!

Now I want to use the same Yubikey with the same same gpg-keys on a second laptop.
I tried to just copy over the whole ~/.gnupg directory from laptop #1 to laptop #2, but gpg-agent reports "secret key not available". The Yubikey is recognised as I can check with

Seems there is some additional information missing - please help.

Kind regards,
x11

I just solved it.
Found this information here http://www.narf.ssji.net/~shtrom/wiki/t ... psmartcard
in the paragraph "Using the Card on Multiple Computers"
it suggestes:

and that worked fine for me.

In fact, the first part can be omitted, if you have the matching pubkey on your keyring. In that case a is sufficient.
The essential thing is, you have to delete the whole secret key before, only then the stubs get rebuilt:

Regards,
x11