Initialize_authentication, Verify_authentication – ACS ACR3801 Smart Card Reader User Manual
Page 31

ACR3801 – Reference Manual
Version 2.01
www.acs.com.hk
Page 31 of 62
Response Data Format (abData field in the RDR_to_PC_DataBlock)
SW1
SW2
ErrorCnt
90h
Where:
SW1
=
90h
SW2 (ErrorCnt) = Error Counter. FFh indicates the verification is correct. 00h indicates
the password is locked (or exceeded the maximum number of retries).
Other values indicate the current verification has failed.
8.3.3.5. INITIALIZE_AUTHENTICATION
Command Format (abData field in the PC_to_RDR_XfrBlock)
Pseudo-APDU
CLA INS
P1
P2
Lc
Q(0) Q(1) … Q(7)
FFh
84h
00h
00h
08h
Where:
Q(0),Q(1)…Q(7)
Host random number, 8 bytes
Response Data Format (abData field in the RDR_to_PC_DataBlock)
SW1 SW2
Where:
SW1 SW2 = 90 00h if no error
8.3.3.6. VERIFY_AUTHENTICATION
Command Format (abData field in the PC_to_RDR_XfrBlock)
Pseudo-APDU
CLA INS
P1
P2
Lc
Ch(0) Ch(1) … Ch(7)
FFh
82h
00h
00h
08h
Where:
Ch(0),Ch(1)…Ch(7) Host challenge, 8 bytes
Response Data Format (abData field in the RDR_to_PC_DataBlock)
SW1 SW2
Where:
SW1 SW2 = 90 00h if no error