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.

Search found 11 matches

by dabluwt
Tue Apr 11, 2017 6:02 am
Forum: Questions & Answers
Topic: implement KDF and PRF
Replies: 3
Views: 6760

Re: implement KDF and PRF

The main thing I am worried about is implementation of key derivation.

The AES implementation on my card is written by native code. But I wrote this part using JAVA not native code, will there any problems?
by dabluwt
Mon Apr 10, 2017 11:17 pm
Forum: Questions & Answers
Topic: implement KDF and PRF
Replies: 3
Views: 6760

implement KDF and PRF

Hey all here,

I need to implement SCP03 by myself. Now I am trying to implement KDF and PRF. I wonder if there are any API functions beside AES cipher and key handling I could use?

Thanks a lot.
by dabluwt
Mon Dec 12, 2016 5:19 am
Forum: Questions & Answers
Topic: Key File and Password requried in Wallet demo Application
Replies: 4
Views: 14892

Re: Key File and Password requried in Wallet demo Application

chico0609 wrote:Key file: Click Browse, select key.dat file (path C:\JavaCardKit\SDK\Tools\WalletDemo\key.dat)
Regarding Password, you can set it to any string but the length must be 8 characters.


Thank you very much, chico0609, it works. But I have another question, what is the password used to do?
by dabluwt
Mon Dec 12, 2016 3:49 am
Forum: Questions & Answers
Topic: Key File and Password requried in Wallet demo Application
Replies: 4
Views: 14892

Key File and Password requried in Wallet demo Application

I tried to use Wallet Demo application that JCKit comes with. But when I proceeded with Issue Card, the demo required Key File and Password.
How can I know these? Anyone knows?

walletdemo.png
by dabluwt
Fri Dec 02, 2016 5:48 am
Forum: Algorithm School
Topic: Question about DESKey
Replies: 2
Views: 7438

Re: Question about DESKey

Thank you very much for your detailed answer. It helps me a lot . :lol:
by dabluwt
Thu Dec 01, 2016 3:11 am
Forum: Algorithm School
Topic: Question about DESKey
Replies: 2
Views: 7438

Question about DESKey

Can I create DESKey in transient memory? Will DESKey keep the key data permanently?
by dabluwt
Fri Nov 11, 2016 4:07 am
Forum: Questions & Answers
Topic: bArray in JCRE
Replies: 3
Views: 7598

bArray in JCRE

There are two global array in JCRE implementation. They are bArray for Install method and APDU buffer.
what are their sizes ? Is it possible to store their references in class by the below code?

byte [] reference = bArray
by dabluwt
Wed Oct 26, 2016 9:45 pm
Forum: Questions & Answers
Topic: installation APDU command
Replies: 6
Views: 14907

Re: installation APDU command

You really saved my day. Thank you very much. :D

Thanks for your kind help.
by dabluwt
Wed Oct 26, 2016 6:43 am
Forum: Questions & Answers
Topic: installation APDU command
Replies: 6
Views: 14907

Re: installation APDU command

This applet comes with JCIDE. package WalletDemoApplet; import javacard.framework.*; import javacard.security.*; import javacardx.crypto.*; public class WalletDemoApplet extends Applet { private final static byte Wallet_CLA =(byte)0x80; final static byte VERIFY = (byte) 0x20; private final static by...
by dabluwt
Wed Oct 26, 2016 4:22 am
Forum: Questions & Answers
Topic: installation APDU command
Replies: 6
Views: 14907

Re: installation APDU command

Thanks for your reply. But how can I get the latter half of installation parameters behind tag 'C9'? I couldn't see any useful information in the spec about this part.

C9 23 08 11 22 33 44 55 66 77 88 10 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 08 01 40 20 30 40 50 60 70 00 00
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