User's Manual

ACG HF Multi ISO RFID Reader V1.0
ACG Identification Technologies GmbH 103
12.4.5 Key Management
The Key Management is able to store up to 32 keys and is also able to manage 3
different key types.
If no key is available to login into the reader, it is possible to reset the key table
without any authentication.
Key type Description
01 my-d™ secure key
02 DES key
03 mifare
®
key
12.4.5.1 Authenticate to reader
This command logs into a reader. Only my-d™ secure and DES keys are allowed to
login into reader. After successful log in the key table of the reader can be changed.
The authentication does 2 two-pass authentications, defined in ISO 9798 part 2,
within two steps. Following commands need a prior log in:
• Update key
• Update key access rights
• Change key type
• Reset key table
Command
Command Data
Step 1: 'ar' Option x1h (1 byte)
Key type (1 byte)
Key index (1 byte)
Step 2: 'ar' Option x2h (1 byte)
Random number key Management (8 bytes)
MAC key Management (8 bytes)
Answer
Answer Description
Step 1 Random number reader (8 bytes)
Step 2 MAC reader (8 bytes)