I would like to know how to obtain PAN(Primary Account Number) from a debit/credit smart card. I try the Maestro debit card using APDU commands and I get the data in bytes, encoded in TLV. The EMV specification says that PAN is on the tag "A5", but I don't identify it on that tag.
APDU commands:
<<00 A4 04 00 07 A0 00 00 00 04 30 60
>>61 42
<<00 C0 00 00 42
>>6F 40 84 07 A0 00 00 00 04 30 60 A5 35 50 07 4D 41 45 53 54 52 4F 87 01 01 5F 2D 06 65 73 65 6E 70 74 9F 11 01 01 9F 12 07 4D 41 45 53 54 52 4F BF 0C 0F 9F 4D 02 0B 0A 9F 6E 07 08 62 00 00 30 30 00 90 00
decode data:
6F File Control Information (FCI) Template
84 Dedicated File (DF) Name
A0000000043060
A5 File Control Information (FCI) Proprietary Template
50 Application Label
M A E S T R O
87 Application Priority Indicator
01
5F2D Language Preference
e s e n p t
9F11 Issuer Code Table Index
01
9F12 Application Preferred Name
M A E S T R O
BF0C File Control Information (FCI) Issuer Discretionary Data
9F4D Log Entry
0B0A
9F6E Unknown tag
08620000303000
90 Issuer Public Key Certificate
APDU commands:
<<00 B2 01 0C 00
>>6C 89
<<00 B2 01 0C 89
>>70 81 86 9F 42 02 09 37 5F 25 03 17 12 08 5F 24 03 21 12 31 5A 08 XX XX XX XX XX XX XX XX 5F 34 01 00 9F 07 02 FF C0 8C 27 9F 02 06 9F 03 06 9F 1A 02 95 05 5F 2A 02 9A 03 9C 01 9F 37 04 9F 35 01 9F 45 02 9F 4C 08 9F 34 03 9F 21 03 9F 7C 14 8D 0C 91 0A 8A 02 95 05 9F 37 04 9F 4C 08 8E 0C 00 00 00 00 00 00 00 00 42 03 01 03 9F 0D 05 B0 50 BC 88 00 9F 0E 05 00 00 00 00 00 9F 0F 05 B0 70 BC 98 00 5F 28 02 08 62 90 00
where XX XX... is Application Primary Account Number (PAN), encoded in TLV.
The trick is to know what record to read, where it is, because it is not always in the same place, it depends of the smart card.
sometimes it is 00 B2 01 0C 00 other00 B2 02 14 00 and other combinations.
recomiendo leer:Getting information from an EMV chip card with Java and for more details: EMV Integrated Circuit Card Specifications for Payment Systems Book 3