Kenwood NX-5000 series, Manual

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4.9 Deleting all Encryption Keys (Zeroize)
Zeroize is the function to delete all Encryption Keys stored in the SCM or configured for Built-in DES.
While using the SCM, the transceiver executes Zeroize in the following cases:
1)
If Zeroize is executed by pressing the Zeroize key
(Refer to Executing the Zeroize process by using the Zeroize key .)
2) If Zeroize is executed from Menu Mode
(Refer to Executing the Zeroize process by using the Menu Mode .)
3) If Zeroize of the AUX Input port is executed on Mobile
(Refer to Executing Zeroize by using the AUX Input port (Mobile only) .)
4) If ESN authentication is determined inconsistent when the transceiver is turned ON
5) If the transceiver detects Tamper when turned ON
The transceiver detects Tamper if the SCM is removed from the transceiver.
6) If the transceiver has been turned Off longer than the time configured in KPG-D1/ D1N when the transceiver is
turned ON
(Refer to Protection Function of Encryption Key (Key Retention) .)
7) If Zeroize is enabled when configuration data is written to the transceiver using KPG-D1/ D1N
All encryption key data configured on an SCM are deleted when writing the configuration data to the transceiver with
Zeroize enabled (in the Write Data to the Transceiver dialog box) in KPG-D1/ D1N.
8) If Transceiver Password entry fails 15 times in a row
All Encryption Keys configured on an SCM are deleted if an incorrect password is entered 15 times in a row when the
transceiver is turned ON with the transceiver password configured. In this case, the user will not be notified that the
Encryption Key has been deleted. Therefore, “Key Erased” does not appear on the display.
Also, the number of failed times cannot be reset until the entered password matches the password configured in the
transceiver even if the transceiver is turned OFF.
9) If all Keys are deleted in Key Delete Mode
(Refer to Deleting the Encryption Key (Key Delete) .)
10) If Zeroize (Key Erasure/ Key Delete) is executed in Key Loader
(Refer to Key Loader .)
While using Built-in DES, the transceiver executes Zeroize in the following cases:
1)
If Zeroize is executed by pressing the Zeroize key
(Refer to Executing the Zeroize process by using the Zeroize key .)
2) If Zeroize is executed from Menu Mode
(Refer to Executing the Zeroize process by using the Menu Mode .)
3) If Zeroize of the AUX Input port is executed on Mobile
(Refer to Executing Zeroize by using the AUX Input port (Mobile only) .)
4) If the transceiver has been turned Off longer than the time configured in KPG-D1/ D1N when the transceiver is
turned ON
(Refer to Protection Function of Encryption Key (Key Retention) .)
5) If Transceiver Password entry fails 15 times in a row
All Encryption Keys configured on an SCM are deleted if an incorrect password is entered 15 times in a row when the
transceiver is turned ON with the transceiver password configured. In this case, the user will not be notified that the
Encryption Key has been deleted. Therefore, “Key Erased” does not appear on the display.
4 COMMUNICATION SECURITY
4.9 Deleting all Encryption Keys (Zeroize)
P25 FUNC (K)/Ver 2.20 172
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