4
Encryption Key Loading Guide
© Tait Electronics Limited September 2006
Introduction
The encryption and decryption of radio voice communications requires the
use of encryption keys. Tait mobiles and portables provide a standard P25
key-fill interface for the loading of encryption keys. Currently, Tait
recommends using the Motorola key fill device for this task.
First you enter into the the encryption keys required, and then
you connect the to each radio in turn, loading one or more keys
into it. If your system has P25 Console Gateways, they must also be supplied
with encryption keys, as they are an encryption and decryption point.
This guide gives an overview of encryption and supplements the
documentation with information on how to use the with Tait
equipment.
For instructions on how to use the , see the User’s
Guide.
Equipment Required
■
Motorola key fill device with the following:
■
battery
■
charger
■
user’s guide
■
option for ASTRO P25 mode
■
option for ASN mode (required for operation in ASTRO P25
mode)
■
option for DES/DES-XL/DES-OFB encryption.
■
option for AES encryption (if you plan to use AES encryption)
■
Tait 9000 series to adapter ( TPA-SV-020). This includes a
cable for connecting to the .
■
Cabling for connecting the adapter to the radio.
Note
Tait TM9100/TP9100 radios and P25 Console Gateways require
the Base encryption feature license. This license enables P25-
compliant DES encryption. With mobiles and portables you must
obtain the license before loading encryption keys. An additional
license is required to enable AES encryption.
