5.6
Requesting the Update of an Encryption Key (Rekey Request)
Rekey Request
is the function to request the update of an Encryption Key by operating the transceiver.
This function requests the update of an Encryption Key by using a Hello Command.
Operating the transceiver
1
Press and hold the
Rekey Request
key for approximately 1 sec.
A Key Beep A (1 beep) sounds, and then the transceiver enters Ack Wait
Mode. The Hello Command (Rekey Request) is transmitted.
Since a Hello Command is transmitted in the Confirmed Data Packet
Format, the transceiver waits for Response Packets transmitted from the
KMF after the transceiver transmits the Hello Command.
Note
0
The Rekey Request is transmitted according to the configuration (Basic or Enhanced) in
Transmit Security
Level
as follows:
If Basic:
The Rekey Request is transmitted without encryption and authentication.
If Enhanced:
The Rekey Request is transmitted with encryption and authentication.
0
The transceiver cannot transmit the Rekey Request on a channel which is configured with a KMF Profile where
Rekey Request
is disabled.
0
The Hello Command is not transmitted while receiving a Group Call (Status Symbol = Busy). The transmission of
the Hello Command is suspended until Status Symbol changes to the Idle state.
0
If the Rekey Request requires encryption at the time of transmission, the Rekey Request is transmitted by using
the Encryption Key of the lowest CKR No. of the lowest Keyset ID. However, if the transceiver has an AES
Encryption Key, the AES Encryption Key has priority.
0
While the transceiver is scanning, the scan is suspended if the transceiver transmits the Rekey Request and then
enters Ack Wait Mode. When Ack Wait Mode ends, the scan is resumed after the time configured in
Dwell
Time
or
Dropout Delay Time
elapses.
Rekey
Zone+
Z o n e 1
T a l k g r o u p 1
12 : 34
A
M
R e k e y R e q u e s t
Rekey
Zone+
Z o n e 1
T a l k g r o u p 1
12 : 34
A
M
S e n d D a t a
5 P25 OTAR
5.6 Requesting the Update of an Encryption Key (Rekey Request)
P25 FUNC (K)/Ver 2.20
192