MagTek IntelliStripe65 99875161 - Manual (Page 113)

Appendix B. Memory Card Support
107
Internal Authenticate APDU
The Internal Authenticate is used to authenticate the card to the hosting terminal.
Command APDU:
CLA INS P1 P2 Lc Data Le
D0 88 00 00 04 xx xx xx xx 01
CLA is always D0
INS is always 88
P1 is always 00
P2 is always 00
Lc gives the length of the data to be used as the Random Number in the Authentication
operation, its value must always be 4.
Data is the Random Number to be used in the Authentication operation.
Le gives the length of the expected reply, which is always 1.
Response APDU:
MAC (1 byte) SW1 = 90 SW2 = 00
OR
SW1 = 67
SW2 = 00
If SW1/SW2 indicates normal completion (9000), the MAC field is 1 byte long and is the result
of the Authentication. If SW1/SW2 indicates a wrong length, the MAC is not included in the
message
Possible SW1/SW2 combinations:
SW1/SW2 Meaning
9000 Normal completion, no errors
6700 Wrong length, Lc does not equal 4 or Le does not equal 1