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