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README
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USB CCID IFD Handler
====================
This package provides the source code for a generic USB CCID
(Chip/Smart Card Interface Devices) driver. See [1] for the USB CCID
specifications from the USB working group.
Author:
=======
- Ludovic Rousseau <[email protected]>
Supported CCID readers:
=======================
(in alphabetical order)
- Gemplus GemPC 433 SL [2]
- Gemplus GemPC Key [3]
- Gemplus GemPC Twin [4]
- OmniKey CardMan 3121 [5]
- SCM Micro SCR 331 [6]
- SCM Micro SCR 335 [7]
Unsupported CCID readers:
=========================
- none known
Supported operating systems:
============================
- GNU/Linux (libusb 0.1.7)
- MacOS X/Darwin (libusb 0.1.8beta, CVS snapshot. See "Known problems")
to libusb)
Known problems:
===============
All platforms
readers enumeration
"""""""""""""""""""
You may have wrong reader identification if you connect two or
more reader at the exact same time.
The daemon pcscd and the CCID driver do not list connected readers
in the same order. The driver has no way to know which reader has
been detected as a new reader by pcscd.
So if you plug two readers at the same time (for example if you
start pcscd with two readers connected or if you plug a USB hub
with two readers on the hub) you may have this (with two readers
foo and bar):
- pcscd scans the USB bus and finds a new CCID reader foo and
calls the driver
- the CCID driver scan the USB bus and finds a new different
reader bar
- pcscd continues scanning the USB bus and finds the second reader
bar and calls the driver
- the CCID driver scan the USB bus and finds an unused reader foo.
Now the reader foo will be called bar by pcscd and bar will be
called foo. This may not be a problem if the two readers have
the same name. But it is strange to insert a card in the
physical reader foo and see pcscd detect the card insertion in
the reader he calls bar.
The solution is to use IFDHCreateChannelByName() instead of
IFDHCreateChannel() and specify the USB device to use. But pcscd
does not implement IFDHCreateChannelByName() yet. Maybe in the
future.
Another solution is to plug readers one after the other and not
at the same time.
MacOS X/Darwin
hotplug
"""""""
Due to libusb work in progress the driver may crash on a reader
insertion after a few insert/remove actions.
So if your reader is always connected you should not have
problems.
A new version of libusb should fix this bug.
*BSD
libusb
""""""
The libusb does not yet support USB interrupt endpoints. You will
notice that the driver will stop working as soon as you insert a
card in the reader.
A new version of libusb should fix this bug.
Licence:
========
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
History:
========
0.2.0 - 26 August 2003, Ludovic Rousseau
- Works under MacOS X
- Info.plist: use an <array></array> for the alias enumeration
- Makefile rework for *BSD and MacOS X
0.1.0 - 13 August 2003, Ludovic Rousseau
- First public release
Bibliographie:
==============
[1] http:https://www.usb.org/developers/devclass_docs/ccid_classspec_1_00a.pdf
[2] http:https://www.gemplus.com/products/gempc433/
[3] http:https://www.gemplus.com/products/gempckey/
[4] http:https://www.gemplus.com/products/gempctwin/
[5] http:https://www.omnikey.com/en/produkt_details.php3?produkt=1&variante=47
[6] http:https://www.scmmicro.com/security/SCR331.html
[7] http:https://www.scmmicro.com/security/SCR335.html
$Id$
vim:ts=20