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git-svn-id: https://vsmartcard.svn.sourceforge.net/svnroot/vsmartcard@663 96b47cad-a561-4643-ad3b-153ac7d7599c
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frankmorgner
2011-12-09 16:07:30 +00:00
parent 0452235abb
commit 162d5d434b
2 changed files with 51 additions and 10 deletions
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7
pcsc-relay/doc/README.rst
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@@ -24,6 +24,13 @@ OpenPICC or from a libnfc device to a smart card via the PCSC middleware. You
can use this program in combination with the virtual smart card to emulate a
ISO/IEC 14443 smart card.
.. note::
This software can actually be used in a relay attack allowing full access
to the card... `We discussed the impact especially on the German identity
card
<http://media.ccc.de/browse/congress/2010/27c3-4297-de-die_gesamte_technik_ist_sicher.html>`_,
but it generally concerns *all NFC smart cards*.
.. include:: autotools.rst

54
virtualsmartcard/doc/api.rst
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@@ -13,6 +13,8 @@ Creating a Virtual Smart Card
virtually any program to the virtual smart card reader, as long as you respect
the following protocol:
.. _vpcd-commands:
============= ==================== ============= =============
|vpcd| |vpicc|
---------------------------------- ---------------------------
@@ -29,9 +31,22 @@ The communication is initiated by |vpcd|. First the length of the data (in
network byte order, i.e. little endian) is sent followed by the data itself.
=======================================
===================================
Documentation to Virtual Smart Card
===================================
.. toctree::
api/virtualsmartcard
========
Examples
========
---------------------------------------
Implementing a ISO 7816 like Smart Card
=======================================
---------------------------------------
|vpicc| includes an emulation of a card acting according to ISO 7816. This
includes all standard commands for file management and secure messaging.
@@ -40,7 +55,7 @@ Let's assume we want to create a cryptoflex card, that acts mostly according to
ISO 7816. In this example we only want to add little things that differ from
ISO 7816. But as for most complex software you need to know where you need to
hook into. Here we only want to give an overview to the design, the complete
details can be found in section `Documentation to Virtual Smart Card`_
details can be found in section `Documentation to Virtual Smart Card`_.
Back to the cryptoflex example.
:class:`virtualsmartcard.VirtualSmartcard.VirtualICC` provides the connection
@@ -67,8 +82,8 @@ called to encode the |SWs| and the resulting data.
:pyobject: CryptoflexOS.formatResult
Note that this also requires some insight knowledge about how
:class:`virtualsmartcard.Iso7816OS` works (see `below <Documentation to Virtual
Smart Card>`_).
:class:`virtualsmartcard.VirtualSmartcard.Iso7816OS` works (see `above
<Documentation to Virtual Smart Card>`_).
The previously created |SAM| handles keys, encryption, secure messaging and so
on (we will not go into more details here). The file system creates, selects
@@ -89,10 +104,29 @@ read some documentation or even source code to find out where it's best to do
your modifications...
===================================
Documentation to Virtual Smart Card
===================================
----------------------------------
Implementing an Other Type of Card
----------------------------------
.. toctree::
If you have a card entirely different to ISO 7816, you surely want to avoid all
magic that is done while parsing a buffer (an |APDU|). As example we will
connect to an other smart card using PC/SC and forward it to |vpcd|.
api/virtualsmartcard
.. note::
This software can actually be used in a relay attack allowing full access
to the card... `We discussed the impact especially on the German identity
card
<http://media.ccc.de/browse/congress/2010/27c3-4297-de-die_gesamte_technik_ist_sicher.html>`_,
but it generally concerns *all smart cards*.
As before with the cryptoflex card, we let
:class:`virtualsmartcard.VirtualSmartcard.VirtualICC` recognize the new type
``"relay"``. :class:`virtualsmartcard.VirtualSmartcard.RelayOS` overwrites all
main functions from the template
:class:`virtualsmartcard.VirtualSmartcard.SmartcardOS`. Its functions correspond
to the :ref:`commands sent by vpcd <vpcd-commands>`. If you know how to use
`pyscard <http://pyscard.sourceforge.net/>`_ then the rest is pretty straight
forward, but see yourself...
.. literalinclude:: virtualsmartcard/VirtualSmartcard.py
:pyobject: RelayOS