User's Manual

ACG HF Multi ISO RFID Reader V1.0
ACG Identification Technologies GmbH 112
Action
The Action byte defines the action of the key.
Action Description
Axh Add / Update key
5xh Delete Key
x1h my-d™ secure key A
x2h my-d™ secure key B
my-d™ secure key
For more detailed information on key information data refer to Infineon
documentation.
DES key option byte
Bit Description
0 0 … 16 byte key
1 … 8 byte key
1 - 7 RFU
In case of an 8-byte key, the first 8 bytes of the key data are valid.
mifare
®
key
Only the first 6 bytes of key data are valid.
Number of stored keys
The key management is able to store up to 32 keys.
Encryption
Key Data for DESFire and mifare
®
keys has to be encrypted with the login key in
CBC mode. my-d™ S keys are enciphered every 8 byte block separately without
CBC mode.
CBC mode