ACS ACR3801 Smart Card Reader - Manual (Page 49)

ACR3801 – Reference Manual [email protected]
Version 2.01
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Page 49 of 62
Step 1: Send Authentication Certificate to the Card
Command Format (abData field in the PC_to_RDR_XfrBlock)
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. Typical value is 160 clocks (A0)
BYTE 1...6 Card challenge data
Response Data Format (abData field in the RDR_to_PC_DataBlock)
SW1 SW2
61h 02h
Where:
SW1 SW2 = 61 02h if no error, meaning two bytes of authentication data are ready. The
authentication data can be retrieved by Get_Response command.
Step 2: Get back the Authentication Data (Get_Response)
Command Format (abData field in the PC_to_RDR_XfrBlock)
Pseudo-APDU
CLA INS P1 P2 MEM_L
FFh C0h 00h 00h 02h
Response Data Format (abData field in the RDR_to_PC_DataBlock)
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
Pseudo-APDU
CLA INS P1 P2 MEM_L
CODE
KEY CLK_CNT Byte 1 Byte 2 …… Byte 5 Byte 6
FFh 84h 00h 00h 08h