User's Manual

ACG HF Multi ISO RFID Reader V1.0
ACG Identification Technologies GmbH 126
13.6.3 Create a value file
Basically, each application is created in the same way. The access rights of an
application can be adjusted to freeze the application organization. In this case, a
login to the application is needed to make any changes to the application.
Regardless of the application access rights, a file can be selected using its ID. Before
accessing a secured file, a login to the application is needed. A successful login
allows changing all the files in the application that use the same key.
A value file has a special structure. If a value file is changed the changes are only
accepted after a commit transaction command. This feature allows modifying several
files of an application and changing all the contents at the same time.
The following example illustrates the creation of a value file using DES encipher.
Command Answer
s 04E10E00000000
activate card
f1200000000000000000000000000
0000000000
L
login to application 0
f06050000110F01 00
create application with ID 000011
f0408000011 00
select application with ID 000011
f12110003000000000000FFFFFF
7Ff5555555500
00
create value file with initial value
55555555 with ID 00. File is secured
with DES encipher
Figure 13-4: Create a plain standard data file on a DESFire card