14221-1850-2000, Rev. A
83
5.19 ENCRYPTION
5.19.1 Create and Load Keys
Refer to the following documentation for advanced programming and setup instructions:
• Harris OTAR Overview Manual - MM-008069-001
• Harris Network Key Manager Installation and Configuration Manual - MM-008070-001
• Harris UAS Key Management Application Manual - MM-008068-001
• Harris Key Manager Key Admin Overview and Operation Manual - MM1000019423
• Harris Key Manager Key Loader Overview and Operation Manual - MM1000019424
5.19.2 Zeroize Keys from Radio
It may be necessary to remove keys because of compromise or expiration.
To zeroize keys from the radio:
1. Press the Menu button.
2. Navigate to the SECURITY menu.
3. Scroll up or down to highlight ZEROIZE KEYS and press the Group/Channel Select Knob.
4. Press the YES softkey to remove the keys. This will also remove the keysets.
5.19.3 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 nothing more than
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.