New smart card / token alternative

Peter Lebbing peter at
Wed Nov 8 16:45:27 CET 2017

On 08/11/17 16:27, vedaal at wrote:
> or, more practically, just post anonymously to a blog or website,
> using --throw-keyid, with a pre-arranged understanding that the
> sender and receiver post to and check certain websites

I did not phrase it properly, leading to a misunderstanding.

We are talking about using a smartcard on a compromised computer. I
reasoned from the OpenPGP Card specification[1]. You can simply ask the
smartcard for the public key; the actual cryptographic public key.

So as an attacker with control over the computer, you see that someone
succesfully decrypts a document using his OpenPGP card. You ask the
smartcard for the public key that was used to encrypt the document, and
you have a fully unique identifier for the key that was used.



[1] It isn't clear to me whether this project is actually adhering to
the OpenPGP card specification, though, I didn't check. I realised this
only later.

I use the GNU Privacy Guard (GnuPG) in combination with Enigmail.
You can send me encrypted mail if you want some privacy.
My key is available at <>

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