MagTek Bluetooth MagneSafe V5 Swipe Reader - Manual (Page 20)

Bluetooth MagneSafe V5 Swipe Reader
12
COMMANDS AND SECURITY LEVELS
The following table shows how security levels affect the various commands. “Y” means the
command can run. “N” means the command is prohibited. “S” means the command is protected
(requires MACing). “X” means other (notes to follow).
Command Level 3 Level 4
Get Property Y Y
Set Property S S
Reset X* X*
Get DUKPT SN and Counter Y Y
Set Session ID Y Y
Activate Authenticated Mode Y Y
Activation Challenge Reply Y Y
Deactivate Authenticated Mode Y Y
Get Reader State Y Y
Set Security Level S S
Get Encryption Counter Y Y
Relinquish Interface Y Y
Power Down Y Y
Get Battery Status Y Y
* The Reset command has special behavior. When an Authentication sequence has
failed, only a correctly MACed Reset command can be used to reset the reader. This
is to prevent a dictionary attack on the keys and to minimize a denial of service attack.