PC/SC Relay
Welcome to PC/SC Relay. The purpose of PC/SC Relay is to relay a smart
card using an contact-less interface. Currently the following contact-less
emulators are supported:
Command APDUs are received with the contact-less interface and relayed. The
Response APDUs are then sent back via RFID. The contact-less data will be
relayed to one of the following connectors:
to a real smart card inserted into one of the systems’ smart card readers.
The smart card reader must be accessible with PC/SC. The smart card may be
contact-based or contact-less.
to a Virtual Smart Card that directly connects to pcsc-relay. The virtual
smart card’s native interface is used and (despite its name) PC/SC Relay
does not need to access PC/SC in this case.
┌────────┐ ┌──────────┐ ┌─────────┐
│Emulator│ │pcsc-relay│ │Connector│
└───┬────┘ └────┬─────┘ └────┬────┘
│ Command APDU │ │
│ ───────────────────> │
│ │ ───────────────────>│
│ │ <───────────────────│
│ Response APDU │ │
│ <─────────────────── │
┌───┴────┐ ┌────┴─────┐ ┌────┴────┐
│Emulator│ │pcsc-relay│ │Connector│
└────────┘ └──────────┘ └─────────┘
System Message: WARNING/2 (\input{$wd/bilder/tikzstyles.tex}
\node (pcsc-relay) {\texttt{pcsc-relay}};
\node [kleiner, right=2cm of pcsc-relay, yshift=.9cm]
(libnfc) {Libnfc Devices};
\node [kleiner, right=2cm of pcsc-relay, yshift=.3cm]
(openpicc) {OpenPICC};
\node [kleiner, right=2cm of pcsc-relay, yshift=-.3cm]
(vpcd) {Virtual Smart Card Reader};
\node [kleiner, right=2cm of pcsc-relay, yshift=-.9cm]
(acardemulator) {Android Smart Card Emulator};
\node [kleiner, left=2cm of pcsc-relay, yshift=.9cm]
(contactbased) {Contact-based Smart Card};
\node [kleiner, left=2cm of pcsc-relay, yshift=.3cm]
(contactless) {Contact-less Smart Card};
\node [kleiner, left=2cm of pcsc-relay, yshift=-.9cm]
(remotereader) {Remote Smart Card Reader};
\node [kleiner, left=2cm of pcsc-relay, yshift=-.3cm]
(virtual) {Virtual Smart Card};
\node [above=.3cm of pcsc-relay, kleiner, xshift=1.2cm]
(capdu) {Command APDU};
\node [below=.3cm of pcsc-relay, kleiner, xshift=-1.2cm]
(rapdu) {Response APDU};
\draw (rapdu.east) edge [pfeil] +(1,0);
\draw (capdu.west) edge [pfeil] +(-1,0);
\begin{pgfonlayer}{background}
\path[line width=.5cm,color=hublue!20]
(pcsc-relay.mid) edge [out=180, in=0] (contactbased.east)
edge [out=180, in=0] (contactless.east)
edge [out=180, in=0] (virtual.east)
edge [out=180, in=0] (remotereader.east)
edge [out=0, in=180] (libnfc.west)
edge [out=0, in=180] (openpicc.west)
edge [out=0, in=180] (vpcd.west)
edge [out=0, in=180] (acardemulator.west)
;
\end{pgfonlayer})
!pdf2svg command cannot be run
Debug, Analyze and Emulate with PC/SC Relay
With PC/SC Relay you can relay a contact-less or contact based smart card
over a long distance. Also you can use it in combination with the Virtual Smart Card
to completely emulate an ISO/IEC 14443 smart card.
System Message: WARNING/2 (\input{$wd/bilder/tikzstyles.tex}
\tikzstyle{bla}=[shape=rectangle split, rectangle split parts=2,
every text node part/.style={align=center, klein}, text width=7cm,
every second node part/.style={kleiner}, inner sep=0pt]
\tikzstyle{keks}=[to path={-- ++(.1,0) |- (\tikztotarget)}]
\node (touchatag)
{\includegraphics[keepaspectratio, height=2cm,
width=2cm]{$wd/bilder/touchatag.png}};
\node (touchatagbeschreibung) [below=0cm of touchatag, kleiner]
{touchatag};
\node (pcsc-relay) [right=of touchatag]
{\texttt{pcsc-relay}};
\node (pcsc-relaybeschreibung) [below=0cm of pcsc-relay, kleiner]
{NFC emulator
};
\node (vicc) [right=of pcsc-relay]
{\texttt{vicc -t nPA}};
\node (viccbeschreibung) [below=0cm of vicc, kleiner]
{nPA emulator};
\node (group) [fit=(touchatag) (pcsc-relay) (vicc) (touchatagbeschreibung)
(pcsc-relaybeschreibung) (viccbeschreibung)] {};
\node (funktionenchat) [below=0cm of group, bla]
{
PACE
\nodepart{second}
\begin{itemize}
\item Display context (eID/eSign)
\item Display requested permissions
\end{itemize}
};
\node (funktionenpace) [below=.5 of funktionenchat, bla]
{
Terminal Authentication
\nodepart{second}
\begin{itemize}
\item Verify authenticy of terminal
\item Check freshness of cv certificate
\item With certificate database
\begin{itemize}
\item Identification of service provider
\item Display purpose of transaction
\end{itemize}
\end{itemize}
};
\begin{pgfonlayer}{background}
\node (box) [fit=(touchatag) (pcsc-relay) (vicc) (touchatagbeschreibung)
(pcsc-relaybeschreibung) (viccbeschreibung) (funktionenchat)
(funktionenpace), box, inner sep=.5cm] {};
\node (boxbild) at (box.north west)
{\includegraphics[keepaspectratio, height=1.5cm,
width=1.5cm]{$wd/bilder/moko/moko_reader.png}};
\node [right=0cm of boxbild.east, yshift=.3cm]
{Openmoko Neo FreeRunner};
\end{pgfonlayer}
\node (a) [left=1.5of box]
{\includegraphics[keepaspectratio, height=4cm,
width=4cm]{$wd/bilder/ivak_kiosk-terminal.pdf}};
\node (e) [below=0cm of a, text width=2.5cm, align=center]
{(Public) Terminal};
\begin{pgfonlayer}{background}
\path
(touchatag) edge [doppelpfeil] (pcsc-relay)
(pcsc-relay) edge [doppelpfeil] (vicc)
(vicc.east) edge [keks, pfeil] (funktionenchat.text east)
(vicc.east) edge [keks, pfeil] (funktionenpace.text east)
(a) edge [decorate, decoration={expanding waves, angle=20, segment
length=6}, nichtrundelinie] (touchatag.south west);
\end{pgfonlayer})
!pdf2svg command cannot be run
Emulate a contact-less German ID card to perform sanity checks
Installation
Installation on Linux, Unix and similar
The PC/SC Relay uses the GNU Build System to compile and install. If you are
unfamiliar with it, please have a look at INSTALL. If you can not find
it, you are probably working bleeding edge in the repository. To generate the
missing standard auxiliary files you need to additionally install libtool and
pkg-config and run the following command in pcsc-relay:
autoreconf --verbose --install
To configure (configure --help lists possible options), build and
install the PC/SC Relay now do the following:
./configure
make
make install
Hints on libnfc
Here is an example of how to get the standard
installation of libnfc:
PREFIX=/tmp/install
LIBNFC=libnfc
git clone https://github.com/nfc-tools/libnfc $LIBNFC
cd $LIBNFC
autoreconf -i
# See `./configure --help` for enabling support of additional hardware
./configure --prefix=$PREFIX
make
make install
Building PC/SC Relay with libnfc is done best using pkg-config. The file
libnfc.pc should be located in $INSTALL/lib/pkgconfig. Here is how to
configure PC/SC Relay to use it:
./configure PKG_CONFIG_PATH=$PREFIX/lib/pkgconfig
Hints on Android Smart Card Emulator
The Android Smart Card Emulator is build around the host card emulation mode of
Android 4.4 and later. This mode activates the app if the terminal issues a
SELECT command with one of the app’s application identifiers. By default, the
app only registers for the AIDs for which it has a built-in emulator (see
ACardEmulator/app/src/main/res/xml/aid_list.xml).
If used together with PC/SC Relay, you need to change add AIDs to match the
applications on the relayed card. Otherwise the app will not be activated when
it should relay command APDUs to PC/SC Relay.
Modify the Smart Card Emulator settings to use Remote Virtual Smart Card as
Smart Card Emulator. Now start pcsc-relay by specifying
usage of the vpcd emulator:
pcsc-relay --emulator vpcd
In the app, change the VICC Hostname and VICC Port to
match the location where pcsc-relay is waiting for an incoming
connection. When the app receives a SELECT command to one of the configured
AIDs, it will connect to pcsc-relay, which will then relay the
command for processing.
Compiling and installing Android Smart Card Emulator is covered in its
Download and Install section.
Hints on PC/SC middleware
A PC/SC middleware is included by default in most modern operating systems. On
Unix-like systems (Linux, OS X, Sun OS) it is realized by PCSC-Lite . To
compile PC/SC Relay you will need to install the PCSC-Lite headers from
your distribution.
Windows also ships with a PC/SC middleware in form of the Winscard module.
PC/SC Relay can be (cross) compiled with MinGW-w64. Also, Microsoft’s
developement environment Visual Studio includes all necessary data for building
PC/SC Relay.
