Trezor - Could this be the model for a PGP crypto device?

Jonathan Schleifer js-gnupg-users at
Tue Mar 10 13:18:34 CET 2015

On Tue, 10 Mar 2015 13:35:27 +0900, NIIBE Yutaka <gniibe at> wrote:

> Confirmation push button would be a good idea, and I have been
> considering how we can enhance the OpenPGPcard specification so that
> we could do something like that for future implementation(s).

Does this really need to be part of the specification? For example, the Gnuk could just delay signing / decryption / authentication until the button has been pressed and return an error if it doesn't get pressed within a certain amount of time.

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