OpenCard Framework 1.2 Programmer's Guide - OpenSCDP

Chapter 2. Getting started
Preparing the system
This chapter provides a guide for writing a first simple smart card application. It will
become apparent how simple and efficient smart card application development can be using
the OPENCARD FRAMEWORK.
Before one can start developing one’s own smart card aware applications using the
OPENCARD FRAMEWORK, there are a number of prerequisites to fulfill:
1. Get and install JDK (Java Developer’s Kit) - preferably version 1.1.6 or later, if
you have not already done so. You can find versions of the JDK for a number of
operating systems at JAVA SOFT’s JDK WWW site4 . Alternatively, you can get the
JDK with one of the commercially available Integrated Development Environments
(IDE) for JAVA.
2. Likewise, download and install the OPENCARD FRAMEWORK reference
implementation available at the OCF WWW site5 and follow the installation
instructions.
3. Obtain an OCF-compliant smart card reader device. Check the list at
http://www.opencard.org/ for devices that are presently supported via
OCF-compliant CardTerminal components. Check this list frequently as new
components supporting different devices will become available.
4. Obtain OCF-compliant smart cards and the corresponding developers toolkit.
Check the list at http://www.opencard.org/ for cards that are presently
supported via OCF-compliant CardService components. Check this list
frequently as new components supporting different devices become available.
Writing your first sample application
Now that you’ve setup your system with both hardware and software, you are
ready to code your first sample application: A program that reads the cardholder
data from an OPENCARD DEMOCARD 6 .
If you do not own such a card, you can use any other smart card for which a
FileAccessCardService is available. Use the tools provided with your smart card
to create a transparent file in the master file (MF) of your smart card. The file must
have the ID 0xc009 and should have access condition ALWAYS or CHV for read and
write access. To initialize your card, you may prefer to start with the second
sample application (see “Writing your second sample application” on page 8),
which allows you to write data to that file.
First, we create a skeleton of the new application. The skeleton consists of import
statements, a class definition, and a main method where the actual application
code will be filled in:
import opencard.core.service.SmartCard;
import opencard.core.service.CardRequest;
import opencard.opt.iso.fs.FileAccessCardService;
4. http://java.sun.com/products/jdk/
5. http://www.opencard.org/
6. the card used for the OCF demo called ″Internet Broker″
5