javacard

问题 I download a software named JCOP Manger from here to deal with my CJ3A080 jcop java card. It recognize my card currectly. but it don't let my to install or list applets! why? Output of this software: I try to select the ISD using CardTool (The software that I use to send APDU to card), but as you see below none of common AIDs not found on the card : Note that, CardTool output format is as below : < CLA | INS | P1 | P2 | Lc | Le < Command Data Field (If Possible) > Response Data Field (If

问题 The below applet is written to do a DES encryption/Decryption on the APDU data field : package cryptoPack; import javacard.framework.APDU; import javacard.framework.Applet; import javacard.framework.ISO7816; import javacard.framework.ISOException; import javacard.framework.JCSystem; import javacard.framework.Util; import javacard.security.CryptoException; import javacard.security.DESKey; import javacard.security.KeyBuilder; import javacardx.crypto.Cipher; public class CryptoDES extends Applet

问题 Consider a Java Card Classic applet with multiple instances that need to share some data in a byte[] variable (e.g. persistent mutable, that is EEPROM/Flash), containing information common to all instances. A static byte[] variable would be a perfect fit, but these happen to be prohibited by validation rules imposed on me (I'm told: as a catch-all way to demonstrate that un-instantiating an instance frees what it allocated on instantiation). This would be solved if a slave instance could call

问题 I was already worked with smart cards and I am familiar with APDU commands (that are defined in ISO/IEC 7816 and Global Platform specifications). Now I want to know if is there any way to send an APDU command to my USIM/SIM card that is inserted to my mobile phone? (Samsung A3 with Android v4.4.4 kitkat installed.) I already searched in the Google and I found some related topics and tools named SIM Toolkit Application and Seek for Android . But I don't really understand what are these? Are

问题 As you may know, Gloabal Platform Card Specification defines a command named Get Data to retrieve some information from the smart card. GlobalPlatformPro is one of the popular tools for communication with smart cards. When I list the installed applets on the card using this tool, I have the following output: D:\3-TestTools\SmartCard>GP -list -d -v -i //Useless Info Censored ATR: 3B6800000073C84012009000 //Select APDU Command A>> T=0 (4+0000) 00A40400 00 A<< (0018+2) (48ms)

问题 I am newbie applets and i used from this link: working with Java Card Wallet for creating an Wallet project. I before could credit card amount by this command : 80 30 00 00 01 1A 00 . I now want add '5000' to the present amount. As you know 5000 in hex equals with '1388' that is 2 byte. So i must send 2 byte data 13 and 88 to the card. I create bellow command and sent it to card but i get '67 00 Wrong lenght' as response. 80 30 00 00 02 13 88 00 How can i credit or debit more than 1 byte to

问题 i was wondering if i could send back some data from the javacard applet when it is selected. since select() method returns a boolean value i don't know how to return data bytes from it. can anyone help me with this? i want the applet to return a simple byte array along with the status word 9000 (which is default for success), when i send the select command to the card. ie, when i send the following command 00A4040006010203040506 i want a response like, 010203049000 (first four bytes are the

问题 I already thought that changing Historical bytes is limited to Pre-Personalization step. But, I found a method named setATRHistBytes in the GlobalPlatform APIs today. This is its description(GlobalPlatform 2.2 Page 172) : setATRHistBytes public static boolean setATRHistBytes(byte[] baBuffer, short sOffset, bytebLength) For contact cards according to ISO/IEC 7816-4 and Type A contactless cards according to ISO/IEC 14443-3, this method sets the historical bytes. The sequence of bytes will be

问题 I'm looking for a way to mark an applet as the implicit selectable/"selected by default" applet after it already has been uploaded and installed on a Global Platform/JCOP 2.4.2 R1 system (for starters in the NXP JCOP Tools Java Card Simulation). The applet has been installed without the -d parameter in the JCOP shell: cm> install -i a000100201100001 -q C9#() a000100201100000 a000100201100001 => 80 E6 [...] 90 00 after that the state is Card Manager AID : A000000003000000 Card Manager state :

问题 I am working on java card and i want to know: what is max and min size of an applet in java card and on which parameter it depends? How many applet we can install on smart card? I am using: smart card type = contact card using java card 2.2.2 with jcop using apdu 回答1: There is no official size limit (above the ones Robert already posted). Cards may have their own limits depending on available memory - but there is no fixed value for that; depends on what has already been installed, how their