CONSOLE TRACKING OF A KEY IDENTIFIER ON A PER UNIT BASIS
Original Publication Date: 1997-Sep-01
Included in the Prior Art Database: 2002-Jun-04
In a secure, multi-key two-way radio system, subscriber units and fixed end equipment (a console and digital interface unit) use a unique logical key identifier called a Key ID. The Key ID is used to identify the encryption key used to encrypt and decrypt a secure voice call. This functionality allows for the use of many encryption keys in the system. As a result, the console operator has access to a store of hundreds of keys in order to communi- cate securely with all subscribers in the system.