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dabluwt

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?

dabluwt

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.

dabluwt

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?

dabluwt

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

dabluwt

Thank you very much for your detailed answer. It helps me a lot .

dabluwt

Can I create DESKey in transient memory? Will DESKey keep the key data permanently?

dabluwt

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

dabluwt

You really saved my day. Thank you very much.

Thanks for your kind help.

dabluwt

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...

dabluwt

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

Search found 11 matches

Re: implement KDF and PRF

implement KDF and PRF

Re: Key File and Password requried in Wallet demo Application

Key File and Password requried in Wallet demo Application

Re: Question about DESKey

Question about DESKey

bArray in JCRE

Re: installation APDU command

Re: installation APDU command

Re: installation APDU command

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