Problem: cannot generate / copy keys larger than 1024bit on my OpenPGP-compatible card

Werner Koch wk at
Mon Jun 4 18:44:35 CEST 2012

On Sun,  3 Jun 2012 20:17, venture37 at said:

> By disabling the insternal driver I was able to able to generate keys
> up to 3072 bits on my v2 card using a SCM-335 card reader via
> pcsclite.

That is a different problem than that with the Omnikey reader.  In your
case the permissions of the USB device don't allow you access.  pcscd
however runs as root and thus has no permission problems.  Having a
daemon running as root is not a good idea however.

If you have an very old SCM-335 you should even use the internal CCID
driver, because it has a workaround for the buggy USB stack in those old



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