OTAR MULTIPLEXED KEY ENCRYPTION KEY
Original Publication Date: 1995-Jul-01
Included in the Prior Art Database: 2002-Mar-26
The system is conventional Over-The-Air- Rekeying (OTAR) or is trunking OTAR. Radios with encryption may request encryption keys from a Key Management Controller (KMC) by a menu selec- tion that activates a Rekey Request. A Rekey Request data message (includes the radio's ID) is sent from the radio to the KMC so the radio can be OTARed the encryption keys that it would use for voice. OTAR messages from the KMC, sending encryption keys to the radio are encrypted using the key encryption key (KEK) ofthe radio.