Applications & SmartCard : JavaCard - Identification - LIFL

JavaCard.Framework.Utils
• Functions for byte array manipulation & comparison
byte arrayCompare() ; Compares 2 arrays
arrayCopy() ; Copies 1 array into another atomically
arrayCopyNonAtomic() ; Copies 1 array into another
non-atomically
arrayFillNonAtomic() ; Fills an array non-atomically
• Functions for type conversion (short / byte)
short getShort() ;
short makeShort() ;
setShort() ;
,
[ 0E 06 ] 0E 06
0E 06 0E 06
0E 06
0E 06
JavaCard.Framework APIs
• AID
• APDU
• Applet
• OwnerPIN
• Util
• JCSystem
The JCSystem class includes a collection of
methods to control applet execution, resource
management, atomic transaction management and
inter-applet object sharing in Java Card.
http://www.lifl.fr/~grimaud/Cours
JavaCard System & Framework 53
http://www.lifl.fr/~grimaud/Cours
JavaCard System & Framework 54
JavaCard.Framework.JCSystem
• 1. Object sharing
• 2. Persistence / transience
• 3. Transaction atomicity
JavaCard.Framework.JCSystem
1. Sharing
• Applets can share individual objects with each other
• Once an object is shared, it cannot be unshared
• JCRE Privilege
JCRE has access to all objects regardless if they are shared or not
• getAppletShareableInterfaceObject(AID, byte)
Called by a ‘ client ’ applet to get a ‘ server ’ applet's shareable
interface object.
A ‘ server ’ applet can not be deleted
http://www.lifl.fr/~grimaud/Cours
JavaCard System & Framework 55
http://www.lifl.fr/~grimaud/Cours
JavaCard System & Framework 56