OSEC

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[Muscle] Secure PIN entry with variable legth

From: Mathias Tausig (mtausigfsmat.at)
Date: Mon Jan 28 2008 - 06:58:54 CST


Hy!

I am trying to implement a secure PIN entry with a class2 reader. The
examples I have found on the net (on the PSCS-lite page, for instance)
work well, as long as the length of the PIN is constant. If I want the PIN
to have a variable length, auhentication doesn't work any lonegr. The
problem is, that I have to enter the LC byte of the card APDU before I
execute SCardControl.
I am using Siemens CardOS 4.3b cards (which, as far as I can see, do not
support PIN padding), an Omnikey reader (plus corresponding driver) and
pcsc-lite for communication.

cheers
Mathias

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