I read somewhere that we should never store the keys that are personalized, that need to be used at the time for ARQC and ARPC generation.
We should use something like "key objects" but I not getting how to implement that.
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- Sun Sep 17, 2017 3:08 am
- Forum: Questions & Answers
- Topic: Store 16 Byte Key
- Replies: 2
- Views: 8327
- Tue Aug 08, 2017 11:37 pm
- Forum: Algorithm School
- Topic: 3DES Encryption
- Replies: 5
- Views: 18769
Re: 3DES Encryption
https://javacardos.com/wiki/javacard-api-samples/des
check the above link, i hope it is useful for you for 3DES.
check the above link, i hope it is useful for you for 3DES.
- Thu Aug 03, 2017 10:45 am
- Forum: Questions & Answers
- Topic: ARPC generation
- Replies: 22
- Views: 32690
Re: ARPC generation
I am getting 6F 00 when i am running ARPC request after some continuous transactions.
- Thu Jun 29, 2017 5:34 am
- Forum: Solutions
- Topic: ICC Master Key Derivation
- Replies: 3
- Views: 23122
Re: ICC Master Key Derivation
Described in EMV 4.x Book 2, Chapter "Master Key Derivation", there's 3 methods to Generate MK. And in the code of OpenEMV applet, the MK is a constant bytes, and it can be personalized before use it. Yes you are correct. I figured it out later... after gone through some documents. Still ...
- Wed Jun 28, 2017 2:18 am
- Forum: Questions & Answers
- Topic: ARPC generation
- Replies: 22
- Views: 32690
Re: ARPC generation
UNKNwYSHSA wrote:
how to derive ICC master key in java card?
- Fri Jun 09, 2017 11:22 am
- Forum: Questions & Answers
- Topic: ARPC generation
- Replies: 22
- Views: 32690
Re: ARPC generation
Thanks a lot again 
- Fri Jun 09, 2017 11:16 am
- Forum: Questions & Answers
- Topic: ARPC generation
- Replies: 22
- Views: 32690
Re: ARPC generation
UNKNwYSHSA wrote:Character zero, not value 0x00.
I was considering as a Numerical that was the mistake i was doing....
And i tried with 3030 it is generating correct
- Fri Jun 09, 2017 11:12 am
- Forum: Questions & Answers
- Topic: ARPC generation
- Replies: 22
- Views: 32690
Re: ARPC generation
OK, Replace Response Code to 3030 and calculate again. What about the result? Okay i try that. Can you tell me how you calculated the hex of "00" is "3030". If you saying from 00 to Y3 are hex Then why you converting 00 to 3030 Hex value of character '0' is 0x30. so ... Is that ...
- Fri Jun 09, 2017 11:07 am
- Forum: Questions & Answers
- Topic: ARPC generation
- Replies: 22
- Views: 32690
Re: ARPC generation
UNKNwYSHSA wrote:OK, Replace Response Code to 3030 and calculate again. What about the result?
Okay i try that. Can you tell me how you calculated the hex of "00" is "3030".
If you saying from 00 to Y3 are hex Then why you converting 00 to 3030
- Thu Jun 08, 2017 11:01 pm
- Forum: Questions & Answers
- Topic: ARPC generation
- Replies: 22
- Views: 32690
Re: ARPC generation
UNKNwYSHSA wrote:1 Following your code:Code: Select all
Y = xor(chipMAC, responseCode);
What is the chipMAC?
2 The response code is 2 bytes, it is hex value from "00" to "Z3", it can not be 0000. Hex value of "00" is 3030.
Chipmac is ARQC that is generating earlier