L3Harris XL Series Operator's Manual page 126

14221-1850-2000, Rev. C
8. Success and failure messages are shown on the KVL device's screen. Additional keys can
be loaded or read from the XL-Mobile while the screen shows KVL MODE ACTIVE –
TRANSFER COMPLETE.
9. Once finished loading or reading keys from the XL-Mobile, press BACK or the blue HOME
button to exit KVL Mode.
10. Disconnect the KVL cable and reattach the USB Microphone to the Control Head.
B.2.4 Link-Layer Authentication (LLA) Keyloading with Motorola KVL
In XLP R16A and later, LLA Keys (i.e., Radio Authentication Keys) can be loaded using a KVL-
5000 or KVL-4000. The LLA feature must be enabled to utilize this feature.
1. Connect the radio to the KVL device using cable 12082-0400-A1.
2. Put the radio into KVL LLA Mode:
a. Press the Menu button.
b. Navigate to the SECURITY menu.
c. Scroll up or down to highlight KVL LLA and press the Group/Channel Select Knob
3. The Radio will indicate that KVL LLA Mode is active.
4. Once KVL LLA Mode is activated, the KVL device can be used to provision the radio with LLA
keys. The radio will remain in KVL LLA Mode until the user exits this state.
B.3 PROTECTED KEYS
The Protected Keys feature transfers P25 Voice Keys, from Harris Key Loader to the radio, that
have been wrapped (AES) or encrypted (DES) with Key Protection Keys (KPKs). KPKs are
unprotected Key Encryption Keys (KEKs). The KPKs need to be loaded into the radio before the
Protected Keys are loaded. Once loaded into the radio, the KPKs are used to unwrap (AES) or
decrypt (DES) the Protected Keys.
The radio must be placed into the key loading mode (see Section B.2.2) to accept the KPKs and
P25 Voice Keys.
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MDT Data Enable must be enabled to support KVL LLA Keyloading on XL Mobile
Radios.