In an EMV chip card with two AIDs, it is correct to use different IMK-AC keys for each AID or the same IMK-AC key for both AIDs?
I'm asking this question because we are having problems validating the ARQC for an EMV chip card. The ARQC validation is success only when the card is using one AID, and the ARQC validation is failing when the card is using the other AID. We have tested this several times and have the same result. My theory is the IMK-AC used to issue the AIDs are different, but I don't know if that makes sense?
Is there any way to know the IMK-AC KCV in an AID EMV chip card?
Also, In the TVR (terminal verification result) for the transactions are:
- ARQC Success: 8000048000 (Online PIN entered ON)
- ARQC Failing: 8000008000 (Online PIN entered OFF) I don't know if the TVR could affect in any way the ARQC validation?
I'll appreciate any help on this issue.
Thanks!