ACS ACR38 SAM Smart Card Reader - Manual (Page 38)

ACR38x – Reference Manual [email protected]
Version 6.02 www.acs.com.hk
Page 38 of 40
Response Data Format
SCardTransmit Receive Buffer
SW1 SW2
Where:
SW1 SW2 = 90 00h if no error.
9.2.2.7.4. AUTHENTICATE_MEMORY_CARD (SLE 4436, SLE 5536 and SLE 6636)
This command is used to read a card authentication certificate from an SLE 5536 or SLE 6636 card.
The following actions are executed by the ACR38x:
Select Key 1 or Key 2 in the card as specified in the command present the challenge data specified in
the command to the card generate the specified number of CLK pulses for each bit of authentication
data computed by the card read 16 bits of authentication data from the card reset the card to normal
operation mode
The ACR38x returns the 16 bits of authentication data calculated by the card in the response.
Command format
SCardTransmit Send Buffer
CLA INS P1 P2 MEM_L
CODE
KEY CLK_CNT Byte1 Byte 2 …… Byte 5 Byte 6
FFh 84h 00h 00h 08h
Where:
KEY Key to be used for the computation of the authentication certificate:
00h: Key 1 with no cipher block chaining
01h: Key 2 with no cipher block chaining
80h: Key 1 with cipher block chaining (SLE 5536 and SLE 6636 only)
81h: Key 2 with cipher block chaining (SLE 5536 and SLE 6636 only)
CLK_CNT Number of CLK pulses to be supplied to the card for the computation of each bit
of the authentication certificate.
BYTE 1...6 Card challenge data.
Response data format
SCardTransmit Receive Buffer
CERT SW1 SW2
Where:
CERT 16 bits of authentication data computed by the card. The LSB of BYTE 1 is
the first authentication bit read from the card.
SW1 SW2 = 90 00h if no error.