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Search found 21 matches

by pitbar
Mon Apr 24, 2017 10:17 pm
Forum: Questions & Answers
Topic: How do dowanload applet into MIFARE DESFire EV1 D81
Replies: 5
Views: 1317

Re: How do dowanload applet into MIFARE DESFire EV1 D81

rena2019 wrote:You can use libfreefare https://github.com/nfc-tools/libfreefare or check ridrix blog https://ridrix.wordpress.com/2009/09/19 ... n-example/ for Mifare Desfire communication example


Great library and example. I will start with these guides. Thank you so much, rena2019.
by pitbar
Mon Apr 24, 2017 5:18 am
Forum: Questions & Answers
Topic: How do dowanload applet into MIFARE DESFire EV1 D81
Replies: 5
Views: 1317

Re: How do dowanload applet into MIFARE DESFire EV1 D81

If that is the case, how can I write data into DESFire card? Is there any samples?
by pitbar
Mon Apr 24, 2017 3:23 am
Forum: Questions & Answers
Topic: How do dowanload applet into MIFARE DESFire EV1 D81
Replies: 5
Views: 1317

How do dowanload applet into MIFARE DESFire EV1 D81

I have received the MIFARE DESFire EV1 D81 cards, but I don't know how to start. I wonder if i can download an applet on it just like a java card. If yes, which tool should I use? Thanks.
by pitbar
Thu Dec 29, 2016 2:26 am
Forum: Questions & Answers
Topic: How to create files in java card
Replies: 2
Views: 1102

Re: How to create files in java card

You have to implement a proprietary version of CREATE FILE and the ISO versions of READ BINARY and UPDATE BINARY by yourself according to your needs.

FYI: ISO applet viewtopic.php?f=17&t=31 is really a good example for you to learn more on this part.
by pitbar
Sun Oct 23, 2016 11:17 pm
Forum: Questions & Answers
Topic: Change JCKit version in JCIDE
Replies: 11
Views: 2499

Change JCKit version in JCIDE

Where can I change Java Card Kit version in JCIDE? I want to compile the applet with lower version in order to adapt to my card.
thx
by pitbar
Fri Jul 22, 2016 6:01 am
Forum: Questions & Answers
Topic: How to debug my applet on a real card
Replies: 3
Views: 1048

Re: How to debug my applet on a real card

Hello bro.

Thanks for your help!

But actually I want to monitor some values during the execution flow. What can i do? Is there any method?
by pitbar
Fri Jul 22, 2016 3:21 am
Forum: Questions & Answers
Topic: How to debug my applet on a real card
Replies: 3
Views: 1048

How to debug my applet on a real card

I want to debug my java card applet on the real card. I mean I can set some breakpoints in my applet source code and the execution flow on a real card can stop when coming across these breakpoints. How can I do this? Could anyone give me some pointers? Any answer will be much appreciated.
by pitbar
Wed Mar 30, 2016 4:57 am
Forum: Questions & Answers
Topic: How to update javacard applet
Replies: 5
Views: 1269

Re: How to update javacard applet

I think there is no card provider that can allow this.
by pitbar
Wed Mar 30, 2016 4:13 am
Forum: Questions & Answers
Topic: How to update javacard applet
Replies: 5
Views: 1269

Re: How to update javacard applet

The only way to do this is to delete and reinstall the applet.
by pitbar
Sat Mar 19, 2016 3:53 am
Forum: Questions & Answers
Topic: Help me understand a piece of code well
Replies: 2
Views: 758

Re: Help me understand a piece of code well

short lc = (short) (a[ISO7816.OFFSET_LC] & 0xff); It's the standard way to compute Lc byte. short read = apdu.setIncomingAndReceive(); This line is to get at least the beginning of the incoming data in the APDU buffer. while(read < lc) { read += apdu.receiveBytes(read); } Appends whatever addit...
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