12 Encryption
This section describes how to use encryption to make users' communications completely private.
This feature is controlled by a software license (SFE) and may not be available with the radio.
This section covers:
About Encryption
Changing the Radio's Encryption Key
Encrypting Calls
Making an Encrypted Call
Receiving an Encrypted Call
Removing Encryption Keys from the Radio
Updating Encryption Keys Over-The-Air
About Encryption
The encryption feature is available for digital and dual-mode networks only.
To make communications with other users on a users' system completely private, the users' radio may be able to
encrypt outgoing calls, using a confidential encryption key. The radio receiving a users' call must have the same
encryption key installed before it can hear an encrypted call.
About the proper key detect feature
The radio may be programmed with ‘proper key detect’. This means that you can only hear an encrypted call if the key
used to encrypt the incoming call matches the key used to encrypt your outgoing calls on that channel.
Note that encryption does not need to be turned ‘on’ for the radio to unmute.
For example, you are encrypting your outgoing calls using encryption key7. Although key1 and key2 are also stored
in your radio, your radio has been programmed so that it will only unmute for incoming calls encrypted using key 7.
Encrypting Calls
The radio may be able to turn encryption on and off. While encryption is on, outgoing calls are encrypted on networks
programmed for encryption, and the encryption icon remains in the display.
This setting only affects outgoing calls. Incoming calls will still be decoded by the radio so long as the key required to
decode the call is stored in the radio.
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Tait International Ltd July 2021