Setting the Gnuk serial

Marian Buschsieweke marian.buschsieweke at
Fri Apr 13 09:34:59 CEST 2018


I have not set the serial before, but I did deploy my keys and personal
information before I tried to set the serial. I want to deploy a second Gnuk
device at work in a secure location in case a forget to bring my primary one.
Because both devices have different serials, I have to replace the key
references in GnuPG when I use the secondary device. It's not much work, but it
would be cool that I could use either of the devices out of the box.

I believe it is not possible to tell GnuPG that the same key material is
deployed on to different devices, so using the same serial seemed like a work
around for me.

Kind regards,

PS: I also checked to change the serial for a third device which I have not used
so far. Unless setting the serial is only allowed on the very first boot of the
device right after flashing the firmware, I have exactly the same issue there.

On Fri, 13 Apr 2018 14:12:21 +0900
NIIBE Yutaka <gniibe at> wrote:

> Marian Buschsieweke <marian.buschsieweke at> wrote:
> > sadly I'm unable to set the serial of my Gnuk device. Any pointers what went
> > wrong?  
> It is only possible to set once.  Even factory-reset can't reset it.
> Is it your case?
> While I implemented, I think that it is questionable feature.  I only
> use it for my old key.  I just use (a kind of) ephemeral serial number
> for other key.

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