User's Manual

ENCRYPTION
CES-128 VOICE ENCRYPTION
292 ENVOY™ TRANSCEIVER REFERENCE MANUAL
CES-128 voice encryption
NOTE: CES-128 voice encryption may be used in conjunction with AES-256
digital data encryption, and the CIVS scrambler.
CES-128 voice encryption is an optional feature that provides high-grade security for
voice communications. This feature uses CES-128 secure keys, secure modes, and
PINs to provide various levels of secure communications. The CES-128 voice
encryptor may be programmed with multiple secure keys, any one of which may be
selected. In addition to the secure keys, the CES-128 voice encryptor provides a PIN
facility.
The CES-128 voice encryptor remembers the last-used state if the transceiver is
switched off then on again.
Figure 55: Channel screen showing secure/standby/clear status for
CES-128 voice encryption
Figure 56: Channel screen showing transmit/receive status for CES-128
voice encryption
Secure ClearStandby
Transmit Receive