Instructions
NFC &
MIFARE & ISO14443AB & ISO15693 & ISO18000 & ISO7816 IC Card Module www.quio-rfid.de
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Failure:
Frame 0x6F Checksum
Example:
Send: 0x00 15 00 90 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 85
Return: 0x00 15 01 90 00 CC 6C E1 74 46 42 09 8D 1B 78 17 03 49 4C 67 A1 85
5.8.1.5 DESFire Authenticate first step Get ekNo (RndB)
Function: Authentication is initiated by the module. Get the ekNo (RndB) from the card.
Host sends:
Frame 0x8E KeyNo Checksum
KeyNo: 1 byte.
Success:
Frame 0x8E Status ekNo (RndB) Checksum
Status: status code returned from the card.
Please reference: DESFire Returned State Code.
If the status code is 0xAF, it's correct. The host will offer further data, the following
command must be: DESFire Authenticate second step get ekNo (RndA’) then may go on
authentication.
ekNo (RndB): 8 bytes, the result of random number encrypted by specified key. Use correct
key to decrypt could get the RndB.
Failure:
Frame 0x71 Checksum
Example:
Send: 0x00 05 00 8E 00 8B
Return: 0x00 0D 01 8E AF 28 EA 37 7B 60 A0 DC F8 47
5.8.1.6 DESFire Authenticate second step Get ekNo (RndA’)
Function: Random number RndA generated by the host. Host encryptes the assembled
“RndA and RndB”, and then send to card and get ekNo (RndA’) from card, decrypting it to get
RndA’, reassembling to obtain RndA, if it is equal to RndA of generated by host, the
authentication is passed.
Host sends:
Frame 0x8F dkNo (RndA＋RndB’) Checksum
dkNo(RndA＋RndB’): 16bytes.
Success:
Frame 0x8F Status ekNo (RndA’) Checksum
Status: status code returned from the card.
Please reference: DESFire Returned State Code.
ekNo (RndA’): encrypted host random number. After decrypted with the correct key and
reassemble, if equal to RndA, then the authentication is passed.
Senssion Key: 16 bytes, Combination of RndA and RndB:
Senssion Key = RndA[0..3]＋RndB[0..3]＋RndA[4..7]＋RndB[4..7]
The senssion key will be used in the following card operations. It is the key to decrypt the
encrypted data in encrypted communication process.
Failure: