ACS ACR38K Smart Keyboard - Manual (Page 38)

ACR38x (CCID) – Reference Manual [email protected]
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9.3.6.3. READ_PRESENTATION_ERROR_COUNTER_MEMORY_CARD (SLE
4442 and SLE 5542)
This command is used to read the presentation error counter for the secret code.
Command Format (abData field in the PC_to_RDR_XfrBlock)
Pseudo-APDU
CLA INS P1 P2 MEM_L
FFh B1h 00h 00h 04h
Response Data Format (abData field in the RDR_to_PC_DataBlock)
ERRCNT DUMMY 1 DUMMY 2 DUMMY 3 SW1 SW2
Where:
ERRCNT Error counter. 07h indicates that the last verification is correct. 00h indicates that
the password is locked (exceeded the maximum number of retries). Other values
indicate that the last verification has failed.
DUMMY Three bytes dummy data read from the card
SW1 SW2 = 90 00h if no error
9.3.6.4. READ_PROTECTION_BITS
This command is used to read the protection bits for the first 32 bytes.
Command Format (abData field in the PC_to_RDR_XfrBlock)
Pseudo-APDU
CLA INS P1 P2 MEM_L
FFh B2h 00h 00h 04h
Response Data Format (abData field in the RDR_to_PC_DataBlock)
PROT 1 PROT 2 PROT 3 PROT 4 SW1 SW2
Where:
PROT y Bytes containing the protection bits from protection memory
SW1, SW2 = 90 00h if no error
The arrangement of the protection bits in the PROT bytes is as follows:
PROT 1 PROT 2 …
P8 P7 P6 P5 P4 P3 P2 P1 P16 P15 P14 P13 P12 P11 P10 P9 .. .. .. .. .. .. P18 P17