User's Manual

ENCRYPTION
AES-256 ENCRYPTION
ENVOY™ TRANSCEIVER REFERENCE MANUAL 303
AES-256 encryption
Related links:
AES-256 digital voice encryption on page 303
AES-256 digital data encryption on page 309
Setting the digital key prefix
A secure key is contained within a secure index. This index has a name that is used to
identify it. The name comprises a prefix followed by a sequential number. The digital
key prefix applies to all digital voice and data encryptors used with the transceiver.
To set the digital key prefix:
 From the main menu, select (Settings), then (Security).
 Press or to scroll to the Digital Key Prefix entry.
 Enter the prefix that you want to use.
You may enter up to 4 alphanumeric characters.
 Press (Save) to save the information.
 Press (Close).
AES-256 digital voice encryption
NOTE: AES-256 digital voice encryption may be used in conjunction with
AES-256 digital data encryption.
AES-256 digital voice encryption is an optional feature that provides high-grade
security for voice communications. This feature uses secure keys to provide secure
communications. The digital encryption may be processed at 1200 or 2400 bit/s. The
display on the handset clearly indicates whether the transceiver is secure or clear.
NOTE: You can change the prefix for the AES secure keys in Settings >
Security > Digital Key Prefix, using KMS, or via CICS.