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How to use a GnuPG card on multiple computers?

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urs.hunkeler at epfl

Oct 11, 2011, 12:37 AM

Post #1 of 3 (242 views)
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How to use a GnuPG card on multiple computers?

Hi,

How can I use a GnuPG card on multiple computers?

My understanding is that when I let the card generate the keys, a stub
for each key pair is automatically added to my keyring and instructs gpg
to use the card to encrypt my messages. How can I add such stubs to my
keyring on a different computer to point to existing keys on my card
without having to regenerate the keys (which would render the card
unusable for the first computer)?

Thanks,
Urs

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wk at gnupg

Oct 11, 2011, 2:03 AM

Post #2 of 3 (233 views)
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Re: How to use a GnuPG card on multiple computers? [In reply to]

On Tue, 11 Oct 2011 09:37, urs.hunkeler [at] epfl said:

> gpg to use the card to encrypt my messages. How can I add such stubs
> to my keyring on a different computer to point to existing keys on my
> card without having to regenerate the keys (which would render the

You insert the card on that other box and enter

$ gpg2 --card-edit

this creates the stub. To retrieve the public key you may now enter:

gpg/card> fetch

this uses the URL field of the card to retrieve the key.

Salam-Shalom,

Werner

--
Die Gedanken sind frei. Ausnahmen regelt ein Bundesgesetz.

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urs.hunkeler at epfl

Oct 11, 2011, 2:50 AM

Post #3 of 3 (238 views)
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Re: How to use a GnuPG card on multiple computers? [In reply to]

Hi Werner,

Thanks a lot!

Cheers,
Urs

On 10/11/11 11:03 AM, Werner Koch wrote:
> On Tue, 11 Oct 2011 09:37, urs.hunkeler [at] epfl said:
>
>> gpg to use the card to encrypt my messages. How can I add such stubs
>> to my keyring on a different computer to point to existing keys on my
>> card without having to regenerate the keys (which would render the
> You insert the card on that other box and enter
>
> $ gpg2 --card-edit
>
> this creates the stub. To retrieve the public key you may now enter:
>
> gpg/card> fetch
>
> this uses the URL field of the card to retrieve the key.
>
>
> Salam-Shalom,
>
> Werner
>

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