[Muscle] Secure PIN entry with variable legth

[AJosephAntony at scmmicro.co.in]

Hi,

muscle-bounces at lists.musclecard.com wrote on 01/29/2008 02:31:57 PM:

> I have one more question on that issue:
> 
> I haven't been able to dislpay the fancy stars when a pinpad-key is
> pressed so far.
> According to GET_FEATURE_REQUEST my reader is capable of 
GET_KEY_PRESSED,
> VERIFY_PIN_DIRECT and MODIFY_PIN_DIRECT. But by the PC/SC documentation,
> GET_KEY_PRESSED requires VERIFY_PIN_START which my reader seems to be 
not
> capable of. When I try to execute GET_KEY_PRESSED I either get a
> "Transaction failed" error  (if no verification is currently in 
progress)
> or the command execution is blocked until the verification has finished
> (Card is opened in shared mode).
> How can I qcquire that? Somehow it has to work, as the windows driver of
> my reader does what it should.

IMHO, once, the VERIFY_PIN_START command is sent, the device moves to a 
"secure" mode. but, the IFDHICCPresence command gets executed every 200ms 
or so 
( am not sure on the exact timing), and when that occurs, if the reader 
sends
a command to update the card status, the this "secure" mode goes off which
can be a cause of thie GET_KEY_PRESSED to fail.

Cheers
Joe

> 
> cheers
> Mathias
> 
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> Muscle at lists.musclecard.com
> http://lists.drizzle.com/mailman/listinfo/muscle
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