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Overview
(continued)
ASTRO 25 Operation
Chapter 7 Using KVL 3000 in OTAR Systems
D Download encryption keys from the
KMF into the KVL 3000
incorporates two methods of download
ing keys:
Individual keys are downloaded to
the KVL 3000 key database, and
must then be loaded directly into
target devices. This method re
quires the KVL 3000 operator to
know the CKRs of the keys in the
KVL 3000 key database and manu
ally load the proper keys to the cor
responding target devices.
Utilizing the ASTRO 25 feature
known as Store and Forward, Key
Management Messages (usually
containing encryption keys) are
downloaded to the KVL 3000 which
are in turn used to update target
devices. The KVL 3000 operator
need not know the CKRs of the
keys in the KVL 3000 database,
and the procedure to load the keys
into the target devices is greatly
simplified.
Each of these two methods may be used
where over the air rekeying can not be
performed (e.g., for subscriber radios
that do not support over the air rekeying,
radios that are out of range, or radios that
have not yet been initialized). The down
load from the KMF to the KVL 3000 may
be performed either by direct cable con
nection or via a modem connection.
This scenario
7-3
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