Advanced Card Systems Limited ACR1281U Benutzerhandbuch
ACR1281U
Advanced Card Systems Ltd.
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2. How to access DESFIRE Tags (ISO14443-4)?
The DESFIRE supports ISO7816-4 APDU Wrapping and Native modes. Once the DESFire Tag is
activated, the first APDU sent to the DESFire Tag will determine the “Command Mode”. If the first
APDU is “Native Mode”, the rest of the APDUs must be in “Native Mode” format. Similarly, If the
first APDU is “ISO7816-4 APDU Wrapping Mode”, the rest of the APDUs must be in “ISO7816-4
APDU Wrapping Mode” format.
Example 1: DESFIRE ISO7816-4 APDU Wrapping.
activated, the first APDU sent to the DESFire Tag will determine the “Command Mode”. If the first
APDU is “Native Mode”, the rest of the APDUs must be in “Native Mode” format. Similarly, If the
first APDU is “ISO7816-4 APDU Wrapping Mode”, the rest of the APDUs must be in “ISO7816-4
APDU Wrapping Mode” format.
Example 1: DESFIRE ISO7816-4 APDU Wrapping.
// To read 8 bytes random number from an ISO 14443-4 Type A PICC (DESFIRE)
APDU = {90 0A 00 00 01 00 00}
Class = 0x90; INS = 0x0A (DESFire Instruction); P1 = 0x00; P2 = 0x00
Lc = 0x01; Data In = 0x00; Le = 0x00 (Le = 0x00 for maximum length)
APDU = {90 0A 00 00 01 00 00}
Class = 0x90; INS = 0x0A (DESFire Instruction); P1 = 0x00; P2 = 0x00
Lc = 0x01; Data In = 0x00; Le = 0x00 (Le = 0x00 for maximum length)
Answer: 1A 29 06 2D 0D C4 00 A6 [$91AF]
# Status Code{91 AF} is defined in DESFIRE specification. Please refer to the DESFIRE
specification for more details.