On 2015-02-20 06:32, Ranjini H.K wrote: > Yes i used Scute. No success with it. I better ask OpenSC mailing list with > the help asking for the support for handle data objects even if the card > could store them..
As mentioned in my more detailed follow-up email on how TrueCrypt accesses the "keyfile" on the smartcard, Scute is not able to do this. GnuPG however can access the (optional) private data objects on the card that could be used to store the "keyfile" on the card (as they are PIN protected). If I'm not mistaken, you should be able to add this to Scute through scdaemon and the GETATTR PRIVATE-DO-3 and SETATTR PRIVATE-DO-3 commands over scdaemon's Assuan protocol that you would have to map to the appropriate PKCS #11 in Scute (see TrueCrypt's source code for how it finds PKCS #11 objects on the card). That said, I doubt using the private DOs for PKCS #11 objects and associated metadata will be generally accepted (other people could be storing other data in these data objects), so you would probably have to add a compile-time option or maintain a fork. If you are trying to implement this as part of job/on behalf of your employer (guessing from your website and work email address that seems to be the case), I would also advice you to subcontract somebody else to implement this feature (see Werner Koch's email). Regards, Matthias-Christian _______________________________________________ Gnupg-users mailing list Gnupg-users@gnupg.org http://lists.gnupg.org/mailman/listinfo/gnupg-users
