ACS AET63 BioTRUSTKey - Manual (Page 23)

7.5.3. EXCHANGE_SAM_APDU
To exchange an APDU (Application Protocol Data Unit) command/response pair between the SAM
card inserted in the AET63 and the host computer.
Command format
Instruction
Code
Data
length
Data
LEN CLA INS P1 P2 Lc BYTE
1
...2 ... BYT
E N
Le
B0
H
LEN ength of APDU command data, N, + 6 (0 < N
≤ MAX_R)
CLA APDU instruction class byte
INS APDU instruction
P1 APDU parameter byte 1
P2 APDU parameter byte 2
Lc APDU command data length
BYTE x APDU command data
Le Expected APDU response data length (Le = 0 menas no data is expected from the
card)
NOTE With the T=0 communication protocol it is not possible to transmit data to the card
and from the card in a single command-response pair. Hence, only either Lc or Le
can be greater than 0 in an EXCHANGE_SAM_APDU command when a T=0 card is
in the reader. If both parameters have a value greater than 0, the AET63 does not
execute the command and returns an error status.
Response data format
BYTE
1
... ... BYTE
N
SW1 SW2
BYTE x Response data from card (if any)
SW1, SW2 Status code returned by the card.
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