User's Manual

ENCRYPTION
AES-256 ENCRYPTION
ENVOY™ TRANSCEIVER REFERENCE MANUAL 309
 Press or to select the value that you want to use from the following:
• If you want digital mute to be on when you enter secure mode, select
Mute on.
• If you want digital mute to be off when you enter secure mode, select
Mute off.
• If you want digital mute to be in the same state as when secure mode was
last used, select Leave as is.
 Press (Save) to save the information.
 Press (Close).
AES-256 digital data encryption
NOTE: To use AES-256 digital data encryption, you must have an RM50e HF
Data Modem installed in your transceiver system and selected as a
peripheral device.
NOTE: AES-256 digital data encryption may be used in conjunction with
AES-256 digital voice encryption, or CES-128 voice encryption.
NOTE: Codan’s KMS must be used to generate secure keys and to fill the
AES-256 digital data encryptor.
The external RM50e HF Data Modem is an optional feature that provides data
communications with high-grade AES-256 digital encryption. It must be used in
conjunction with the RC50-C HF Email software. The data modem is capable of
high-speed data transfer at speeds of up to 9600 bit/s using STANAG 4539
waveforms. The data modem also supports MIL-STD-188-110A/B (including
Appendix F), STANAG 4285, STANAG 4529, and STANAG 4415 waveforms.
For more information on setting up and using RC50-C with your email application,
see the documentation provided on the RC50-C HF Email software CD.
For information on connecting the transceiver, data modem and computer, see the
RM50e HF Data Modem Operator Guide. The data modem detects whether or not a
computer is connected.