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ADVANCED FEATURES 
Secure Operations  
Managing Encryption – Multikey Feature 
171 
This feature allows the radio to be equipped with different encryption keys and supports the DES-OFB 
algorithm. 
There are two types of encryption keys: 
• Conventional Multikey 
   The encryption keys are strapped on a one-per-channel basis, through CPS. In addition, you can have 
operator-selectable keys, operator-selectable keysets, and operator-selectable key erasure. If talkgroups 
are enabled in conventional, then the encryption keys are strapped to the talkgroups. 
• Trunked Multikey 
If the radio is used for both conventional and trunked applications, strap the encryption keys for trunking on 
a per-talkgroup or announcement-group basis. In addition, a different key can be strapped to other features, 
such as dynamic regrouping, failsoft, or emergency talkgroup. You can have operator-selectable key 
erasure.