Codan Envoy Reference Manual

ENCRYPTION
OVERVIEW OF ENCRYPTION
318 ENVOY™ TRANSCEIVER REFERENCE MANUAL
Overview of encryption
NOTE: You must have the CES or AES hardware option fitted and the option
enabled in the transceiver’s firmware to use these methods of
encryption.
NOTE: You must have the CIVS option enabled in the transceiver’s firmware
to use this method of voice scrambling.
In order to communicate securely between two stations, both stations must use the
same channel frequency and secure key or code. The CES and AES encryptors may
be programmed with multiple secure keys, any one of which may be selected. For
secure communications within your organisation you must set up secure keys that are
common to all transceivers in your organisation. CIVS uses standard codes that
provide a basic level of voice scrambling. You can select a different code for the
scrambling, but you cannot change the codes to make them unique to your
organisation.
When you activate secure mode, all encryptors/scramblers that are enabled in your
transceiver go secure.
NOTE: Codan’s KMS may be used to generate secure keys and to fill the CES
and AES encryptors.
NOTE: VCOM is used to provide virtual COM ports for programming secure
keys via KMS/KFS over the USB connector on the control point.
You can pre-set:
• the tasks that an operator may perform at user level
• the status of encryption at power up and when scanning is switched off
• the secure key prefixes
• whether or not encryption can be switched off
The scrambler/encryptors have some common features and some module-specific
features.
Table 14: Features available with CIVS scrambling, and CES and AES encryption
Feature CIVS Voice CES-128 Voice AES-256 Digital
Voice
AES-256 Data
Secure mode N/A Global/Corporate N/A N/A
Base key N/A Yes N/A N/A
PIN for secure
session
N/A Optional N/A N/A
Standby mode
(including clear Tx)
N/A Yes N/A N/A

Codan Envoy Specifications

General

Brand	Codan
Model	Envoy
Category	Transceiver
Language	English