jCardSim (Official repo of the jCardSim project)

Congratulations! jCardSim has won Duke's Choice 2013 Award!

Please note that we moved our code repository here from Google Code.

jCardSim is an open source simulator implements Java Card, v.2.2.1/2:

• javacard.framework.*
• javacard.framework.security.*
• javacardx.crypto.*

Key Features:

• Rapid application prototyping
• Ease of writing Unit-tests (5 lines of code)

//1. create simulator
JavaxSmartCardInterface simulator = new JavaxSmartCardInterface();
//2. install applet
simulator.installApplet(appletAID, HelloWorldApplet.class);
//3. select applet
simulator.selectApplet(appletAID);
//4. send apdu
ResponseAPDU response = simulator.transmitCommand(new CommandAPDU(0x01, 0x01, 0x00, 0x00));
//5. check response
assertEquals(0x9000, response.getSW());

• Emulation of Java Card Terminal, ability to use javax.smartcardio
• APDU scripting (scripts are compatible with apdutool from Java Card Development Kit)
• Ease of verification tests creation (Common Criteria)

JavaDoc: https://jcardsim.googlecode.com/svn/trunk/javadoc/index.html

Latest stable release 2.2.1: https://github.com/licel/jcardsim/raw/master/jcardsim-2.2.1-all.jar

Latest stable release 2.2.2: https://github.com/licel/jcardsim/raw/master/jcardsim-2.2.2-all.jar

Maven Central Repository

<dependency>
  <groupId>com.licel</groupId>
  <artifactId>jcardsim</artifactId>
  <version>2.2.1</version>
</dependency>

<dependency>
  <groupId>com.licel</groupId>
  <artifactId>jcardsim</artifactId>
  <version>2.2.2</version>
</dependency>

What is the difference from Oracle Java Card Development Kit simulator?

• Implementation of javacard.security.*

One of the main differences is the implementation of javacard.security.*: current version is analogous with NXP JCOP 31/36k card. For example, in jCardSim we have support an on-card KeyPair.ALG_EC_F2M/ALG_RSA_CRT key generation. Simulator from Oracle has only KeyPair.ALG_RSA and KeyPair.ALG_EC_FP support, which not supported on real cards.

• Execution of Java Card applications without converting into CAP

jCardSim can work with class files, without any conversions. This allows us to simplify and accelerate the development and writing of unit-tests.

• Simulator API

jCardSim has simple and usable API, which allows you to work with simulator like with real Java Card using javax.smartcardio.*.

• Cross-platform

jCardSim completely written in Java and can therefore be used at all platforms which supports Java (Windows, Linux, MacOS, etc).

How to help jCardSim?

• Join team of jCardSim developers.
• Try out DexProtector. The product is designed for strong and robust protection of Android applications against reverse engineering and modification.
• Licel has one more product you may be interested in - Stringer Java Obfuscator. This tool provides all the features you need to comprehensively protect your Java applications.

License: Apache License 2.0

Third-party libraries: Legion of the Bouncy Castle Java

Trademarks: Oracle, Java and Java Card are trademarks of Oracle Corporation.