EMV Tag 91
in the following example, why the last 2 bytes are "0010"?
example: TLV [910ABCF266A64FF136630010]
I need most help
Thanks!!!
The first 8 bytes are mandatory and contain the cryptogram.
The optional 1–8 bytes that follow are proprietary. Therefore, you need to know what payment application (and version) you are using: e.g., Mastercard M/Chip, American Express AEIPS, etc.
See 6.5.4 External Authenticate in EMV 4.3 Book 3