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KVL 3000 User's Guide
Overview
Note Before using the
KVL 3000
to
perform
tasks in an OTAR system,
OTAR operation must be
enabled by navigating to
KMC in the CONFIG
menu and selecting ON.
Also, a USK must be pro
grammed for each algo
rithm being used in an
OTAR operation (as de
scribed
on
the
next
page).
6-2
Introduction
The Motorola Over the Air Rekeying (OTAR)
system is a secure communications system in
which encryption keys can be sent to subscriber
units via radio transmission (instead of directly
connecting a KVL to load keys). This type of
system
provides
added
convenience in managing and administering
encryption keys.
One of the infrastructure components in an
OTAR system is the Key Management Controller
(KMC). The KMC is a VME based computer that
is responsible for storing and managing the
encryption keys for an OTAR system, as well as
initiating key transmissions to the subscriber
units (typically through a Console Interface Unit,
or CIU, to a base station).
KVL to KMC Scenarios
The KVL 3000 can interface with the KMC to
provide the following functions:
D Transfer the encryption keys required by
the OTAR system from the KVL 3000 to
the KMC
In this scenario, an operator
loads
the
required
KVL 3000, then connects the KVL 3000 to
the KMC via a standard key loading cable
and transfers the keys (one at a time) to
the KMC for storage and management.
D Download encryption keys from the KMC
into the KVL 3000
keys loaded into the KVL 3000 from the
KMC are then loaded directly to target de
vices. This method is used where over
the air rekeying can not be performed
(e.g., for subscriber radios that do not
support over the air rekeying). The down
load from the KMC to the KVL 3000 may
be performed either by direct cable con
nection or via a modem connection.
flexibility
and
keys
into
the
In this scenario, the
ASN Operation
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