DESFire Card

4 Byte & 7 Byte DESFire with UID, SAK, ATQA, ATS Changeable

Setting up UID:

hf 14a raw -s -c -t 1000 cf00000000CD00<uid>

Example:

hf 14a raw -s -c -t 1000 cf00000000CD0011223344556677

Modify UID to 11223344556677

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Setting up ATS:

hf 14a raw -s -c -t 1000 cf0000000034< Length > < ATS >

• The length is set to 0, indicating that ATS is not sent
• When SAK is 20, 28, be sure to set ATS, otherwise you can’t read the card.
• The last two digits of ATS are CRC, which cannot be counted into the length

Example:

hf 14a raw -s -c -t 1000 cf000000003406067577810280

Modify ATS to 060675781028002F0

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Setting up ATQA and SAK:

hf 14a raw -s -c -t 1000 cf0000000035<ATQA><SAK>

Example:

hf 14a raw -s -c -t 1000 cf0000000035440028

Modify ATQA=00 44 SAK=28

*Note that ATQA is inverted on pm3