ACS ACR38K Smart Keyboard - Manual (Page 54)

ACR38x (CCID) – Reference Manual [email protected]
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Where:
SW1 SW2 = 90 00h if no error
= 63 00h if there are no more retries
Note: After SW1SW2 = 0x9000h has been received, read back the data in Application Zone can
check whether the ERASE_APPLICATION_ZONE_WITH_WRITE_AND_ERASE is correct. If all
data in Application Zone is erased and is equal to “0xFFh,” the previous verification is successful.
9.3.9.7. VERIFY_SECURITY_CODE
This command is used to submit Security Code (2 bytes) to the inserted card. Security Code is to
enable the memory access of the card.
The following actions are executed:
1. Present the specified code to the card
2. Search a '1' bit in the presentation error counter and write the bit to '0'
3. Erase the presentation error counter. The Security Code Attempts Counter can be erased
when the submitted code is correct.
Command Format (abData field in the PC_to_RDR_XfrBlock)
Pseudo-APDU
CLA INS
Error
Counter LEN
Byte
Address
MEM_L
CODE
Byte 1 Byte 2
FFh 20h 08h 0Ah 02h
Where:
Error Counter LEN Length of presentation error counter in bits
Byte Address Byte address of the key in the card
CODE 2 bytes Security Code
Response Data Format (abData field in the RDR_to_PC_DataBlock)
SW1 SW2
Where:
SW1, SW2 = 90 00h if no error
= 63 00h if there are no more retries
Note: After SW1SW2 = 0x9000h has been received, read back the Security Code Attempts
Counter (SCAC) to check whether the VERIFY_USER_CODE is correct. If SCAC is erased and is
equal to “0xFFh,” the previous verification is successful.
9.3.9.8. BLOWN_FUSE
This command is used to blow the fuse of the inserted card. The fuse can be EC_EN Fuse, EC2EN
Fuse, Issuer Fuse or Manufacturer’s Fuse.
Note: The blowing of fuse is an irreversible process.