![]() ![]() Val: "80" # Cryptogram Information Data (CID). x9F27: # EMV, Cryptogram Information Data (CID) val: # Template, Response Message Format 2. x77: # EMV, Template, Response Message Format 2 TLVs: # EMV, Tag + Length + Value (TLV) series In the card reply Tag 0x9F27 point to cryptogram type and ARQC cryptogram value in the Tag 0x9F26. But the card decided to force you to go online with ARQC cryptogram. In the First Generate AC Command you sent byte P1 = "40" trying to complete transaction with TC cryptogram. Does this mean that I'm doing something wrong? The response I get after that is a 2 Byte array, that is 6D. In the next step, I am triggering 'EXTERNAL AUTHENTICATE' with the command:Ġ0 82 00 00 AE 7D 66 E4 50 15 D5 A4 02 10 A0 00 00 2A 08 00 I am working with the MasterCard credit card, and I have a question about the exact steps which I need to take to perform the CDA authentication.
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