Our Online Store have the new products: RFID antenna board. Currently it can work with JC10M24R and JCOP4 card chips.
Compared with normal cards, the antenna board module has a smaller size and fixed holes, which is easy to integrate in the IOT(Internet Of Things) project.

Setting Response in SELECT command

JavaCard Applet Development Related Questions and Answers.
naresh
Posts: 20
Joined: Fri May 11, 2018 11:29 am
Points :382
Contact:

Setting Response in SELECT command

Post by naresh » Wed Jul 04, 2018 2:16 am

Hello Sir,
I am unable to set response in the SELECT command,can any one help me out.
Regards,
Naresh

happy123654
Posts: 35
Joined: Wed Jun 20, 2018 4:06 am
Points :218
Contact:

Re: Setting Response in SELECT command

Post by happy123654 » Thu Jul 05, 2018 4:10 am

If you have an applet on javacard. the javacard cos perhaps had processed the select command and the command is err or no compatible withe the standard special. So the applet can't receive the select command and the response of this command cannot be send to the off-card.

If you have an applet and the applet receive the select command. the applet can put the response data in the function:select() or process(). These functions are standard API. eg:

public void process(APDU apdu) {
if (selectingApplet()) {
byte[] apduBuf = apdu.getBuffer();
short rspLen = (short) selectResponse.length;
Util.arrayCopyNonAtomic(selectResponse, (short) 0, apduBuf, (short) 0, rspLen);
apdu.setOutgoingAndSend((short) 0, rspLen);
return;
}
...
}

Post Reply Previous topicNext topic

Who is online

Users browsing this forum: No registered users and 40 guests

JavaCard OS : Disclaimer