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RemoteAccess – OpenCT
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<h1 id="RemoteAccesstosmartcardreaders">Remote Access to smart card readers</h1>
<p>
NOTE: This page is completely untested.
</p>
<p>
OpenCT includes a very simple facility to access smart card readers
on a remote system. Please note that this mechanism has no security
mechanisms in it at all. Therefore please use it only on trusted networks,
or add a security wrapper like openssl to it.
</p>
<p>
The setup needs to be done one two machines: the machine with the reader,
and the machine with the software that wants to access the reader. We will
call these machines "mwr" and "mws" in this example.
</p>
<p>
On the machine with the reader, add it as usual to the openct.conf,
here is an example for a serial reader:
</p>
<pre class="wiki" xml:space="preserve">reader xiring {
driver = xiring;
device = serial:/dev/ttyS0;
};
</pre><p>
In addition to that you need to start ifdproxy on the machine with the
reader, and point the proxy to the machine with the software:
</p>
<pre class="wiki" xml:space="preserve">root@mwr# ifdproxy export xiring /dev/ttyS0 mws:6666
</pre><p>
On the machine with the software, you need to edit openct.conf like this:
</p>
<pre class="wiki" xml:space="preserve">
ifdhandler = /usr/sbin/ifdhandler;
ifdproxy {
server-port = /var/run/openct/proxy,
device-port = :6666;
};
reader xiring {
driver = xiring;
device = remote:serial1@/var/run/openct/proxy;
};
</pre><p>
and then start openct via the init.d script as normal:
</p>
<pre class="wiki" xml:space="preserve">root@mws# /etc/init.d/openct start
root@mws# ifdproxy server
</pre><p>
now you should be able to see the remote reader using the ifproxy list command:
</p>
<pre class="wiki" xml:space="preserve">root@mws# ifdproxy list
Exported devices
serial1 MachineB's_IP xiring
</pre><h2 id="Addingsecurity">Adding security</h2>
<p>
As discussed, the setup above is completely unsecure. But with the openssl
commands, it can be improved:
</p>
<p>
TODO
</p>
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