User`s manual

100-M0070X2 19 of 26
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6.3.1 Function AES Decryption
When the program is launched, the screen shown in Figure 8 is displayed. The user should first
select the serial port the computer is connected to via the Serial Port Selector and connection
region. To configure the DDPC, the user must select a Descrambling mode, type in the
Descrambling key, if in AES mode, and then click on Apply. Click on update to store these
settings after powering off. The following section explains the various functions.
Figure 9 AES Decryption Descrambling Mode
6.3.1.1 Function AES Decryption Buttons and Selects
Com Port Selection: Select the COM port that the DDPC is connected to.
Query Button: Clicking on this button will set all the fields to the current operation mode,
except the Descrambling Key.
Update Button: Load the DDPC with the new Descrambling Mode and Descrambling Key. This
will save the settings and take a minute to reboot your DDPC.
Descrambling mode: As figure 9 shows, this box selects three different modes.
 Bypass mode: This mode does not do any AES Decryption. All other functions are not
affected.
 AES, NEVER Store the key in the DDP mode: This mode does AES Decryption but the
Decryption key must be reloaded every time it is powered off. This is for higher security.
 AES, Store the key in DDP mode: This mode does AES Decryption and the DDPC
remembers the Decryption key so when the DDPC is powered on it will come up working.
Descrambling key: This box loads the decryption key. The Descrambling mode must be set to
an AES mode before this input is available.