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3. Use to highlight and select ZEROIZE KEYS.
4. Use to highlight and select YES if you want to remove the keys.
also remove the keysets.
5. Use to select OK.
4.1.4 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 will be used to unwrap (AES) or decrypt
(DES) the Protected Keys. Refer to Section 4.1.2.2 for key loading instructions.
4.1.5 Global Encryption
Global Encryption can be enabled when encryption keys are loaded on the radio and the selected
Zone/System is encrypted. When Global Encryption is enabled on the radio, Global Key is used for all
encrypted transmissions until:
• Global Encryption is disabled.
• A new mission fill is activated.
• The active keyset is changed.
• The system is changed.
Global Encryption behavior is available on all channels that support encrypted communications.
1. At main display, press to access the main menu.
2. Use to highlight and select SECURITY, or press .
3. Use to change GLOBAL ENCRYPTION to ENABLED.