ENCRYPTION
CES-128 VOICE ENCRYPTION
350 ENVOY™ TRANSCEIVER REFERENCE MANUAL
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Logging in to admin level on page 97
Standby After Selcall on page 255
Base key
The CES-128 voice encryptor uses a Base secure key in secure index 0. This key,
along with the selected secure key in a Corporate secure index, is used as the seed for
the encryption algorithm. The Base secure key may be changed using a CICS
command (secure key #0 key) or via the control point. Changing the Base secure
key changes the seed for the encryption algorithm. Transceivers must use the same
Base secure key and secure key in a Corporate secure index for successful secure
communication.
NOTE: The Base secure key is combined with a secure key in a Corporate
secure index for use in the encryption algorithm. The Global secure key
is not used as a seed for the Corporate encryption algorithm.
Related links:
Logging in to admin level on page 97
Changing the base key
To change the base key:
1 If you are using a 2220 Handset or 2230 Desk Console, do one of the following:
• From the main menu, select (General), then (Secure).
• Hold
SEC.
1 If you are using a 2221 Handset:
• From the main menu, select (Functions).
• Press or to scroll to the Secure Info entry.
•Press (OK).
1 Press or to scroll to the Base Key entry.
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