Decryption fails with 4096bit key on SmartCard

Marcus Ilgner marcus.ilgner at
Tue Sep 22 11:30:31 CEST 2015

Hi Werner,

thank you for the quick reply, it's much appreciated!

On Tue, 22 Sep 2015 at 11:10 Werner Koch <wk at> wrote:

> On Tue, 22 Sep 2015 08:51, marcus.ilgner at said:
> > gpg: public key decryption failed: Missing item in object
> > gpg: decryption failed: No secret key
> This is probably in scdaemon.  Thus you should add
> [...]
> into scdaemon.conf, "gpgconf --kill scdaemon", and watch out for the
> error message in the log file.  This likely an error code 0x6a88 from
> the card, we need to see the commands prior to that.  Take care that you
> redact the PIN in the log file.

You're right, there is a response 0x6A88 there - not that I know what that
means :D
Here you can find the full log:
Thanks for mentioning the PIN, I might have overlooked it in the hex dump :)

> which seems to
> > discuss the same problem but as it's already a couple of years old I
> assume
> That is not related.

Good to know :)
Let me know if there's anything else I can do to assist in solving the

All the best
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