L3Harris XL Extreme Series Operator's Manual page 131

14221-1800-2050, Rev. G
3. The Radio will indicate that KVL LLA Mode is active.
4. Once KVL LLA Mode is activated, the KVL-5000 can be used to provision the radio with LLA
keys. The radio will remain in KVL LLA Mode until the user exits this state.
D.3 PROTECTED KEYS
The Protected Keys feature transfers P25 Voice Keys, from 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 D.2.2) in order to accept the
KPKs and P25 Voice Keys.
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