Document Version 1.00
Last revised on
Page 77 of 87
2020-04-10
Reference Manual for uTrust 3720F and uTrust 3721F Readers
When a card specific Authenticate APDU is received from host, the appropriate keys are fetched
from non-volatile memory of reader and used for authentication. This command does not require
the presence of a card over the reader.
Command APDU:
CLA
INS
P1
P2
Lc
Data
Le
0xFF 0x00 0x00 0x00 Number of bytes in
Data field
0x07
Key Data -
Response:
Data
Status Word
-
SW1
SW2
Reader Load Keys command should be used to store the appropriate keys before attempting to issue
Authenticate APDU to respective card type.
6.4.2.1.
Load Reader Authentication PIN into Reader
The reader PIN can be any 8 byte numeric value. The following command can be used to change reader
PIN.
Command APDU:
CLA
NS
P1
P2
Lc
Data
Le
0xFF
0x00 0x00 0x00 0x0A 0x07
0xFF
Reader PIN (8 bytes)
-
Response:
Data
Status Word
-
SW1
SW2
Example to change PIN to “01 02 03 04 05 06 07 08”
APDU: FF 00 00 00 0A 07 FF 01 02 03 04 05 06 07 08
RESPONSE: 90 00
6.4.2.2.
Load MIFARE Authentication Keys into Reader
The following command can be used to load MIFARE authentication keys into the reader.
Command APDU:
CLA
NS
P1
P2
Lc
Data
Le
0xFF
0x00 0x00 0x00 0x0A 0x07
0x00
MIFARE key data
(as shown below)
-
