ENCRYPTION
CES-128 VOICE ENCRYPTION
ENVOY™ TRANSCEIVER REFERENCE MANUAL 341
Related links:
Secure mode on page 341
Setting the CES key prefix on page 343
PIN for secure session on page 343
Standby mode on page 346
Base key on page 350
Switching the secure feature on or off on page 77
CES Options on page 256
Viewing the COM port setting in VCOM on page 303
Secure mode
CES-128 encryption may operate in one of two modes: Corporate or Global. You can
set the secure mode in Settings > Security > CES-128 Mode.
For secure communications within your organisation you must set up secure keys in
the Corporate secure indexes. These must be common to all transceivers in your
organisation. Corporate secure mode refers to a secure session that uses a key stored
in one of the Corporate secure indexes, and the Base key, as the seed for the encryption
algorithm. The CES-128 voice encryptor can store a secure key in up to 98 Corporate
secure indexes. Each key may contain up to 16 digits, except the first key, which
accepts only 8 digits.
If you need to have secure communications with other organisations operating the
same type of equipment as yours, you can use the fixed Global secure key that is
common to all CES-128 voice encryptors shipped from Codan. The Global secure key
provides secure communications, however, the security is less than that provided by
a secure key in a Corporate secure index. The PIN facility may also be used with the
Global secure key to increase the level of security.
NOTE: The Global secure mode does not use the Base secure key in its
encryption algorithm.
Related links:
Setting the CES-128 mode on page 342
CES Key Prefix on page 257
Base key on page 350
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