Specifications

Smart Cards Lab COMPGA12 University College London
Answer obtained:
SW1 SW2
61
If the answer was indeed of form ’61 Le’, we will be able to recover the
answer:
GET RESPONSE
CLA INS P1 P2 Le
00 C0 00 00
Response obtained:
Here the card returns both:
1. Application Interchange Profile (AIP): supported functions (for ex-
ample that the card supports SDA or DDA, and if the card supports
Cardholder verification)
2. Application File Locator (AFL): pointers to application data available
(At this stage the terminal also sees if the card has stored records of transactions preformed offline. These
will be taken into account in Terminal Risk Management).
16.8 Read Application Data
Now the terminal may read from the card all the data specified by the AFL.
If one objects repeats, some AFL object is missing, or some mandatory
object is not in AFL, or any kind of errors occurs, the terminal terminates
the transaction.
However according to the EMV spec it is not required that card verifies
that the terminal conforms to all of this
Therefore we skip this stage.
16.9 Offline Data Authentication
Here SDA, DDA or CDA can be performed.
This part is optional, or more precisely it can be performed later, and
typically the card does not check if it was performed.
We skip this part too.
c
Nicolas T. Courtois 2009-10