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Deleting User Keys; K Validity; Verifying K Validity; Sck (Air Interface Encryption Class 2) - Motorola MTP8000Ex Series Feature User Manual

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5.8.3.2

Deleting User Keys

Prerequisites: The user key deletion is enabled in the codeplug.
Procedure:
1 Verify that the radio is turned on.
2 Press the following key sequence: *, *, 0, 0, #, #.S
S
B
2, S
IDE
UTTON
CAUTION:
The key deletion takes up to 30 seconds. During the period, the battery must not be removed.
Removing the battery during that period may lead to radio malfunction.
Encryption and/or Authentication keys are deleted. The radio enters Temporary Disable state and must
be manually restored by the service provider.
5.8.4

K Validity

K (Key) is a secret key the infrastructure uses to authenticate the radio in the system. It is part of the
authentication that provides service confidentiality between your radio and the system.
5.8.4.1

Verifying K Validity

Procedure:
1 From the home screen, press the
2 Select Security → K Validity.
3 Your radio displays:
K is Valid — the infrastructure can authenticate your radio.
K is Invalid — the infrastructure is unable to authenticate your radio. Please call your service
provider to restore the key to your radio.
5.8.5

SCK (Air Interface Encryption Class 2)

SCK (Static Cipher Key) is a secret key used for the Air Interface Encryption Class 2. It may be used to
encrypt calls and data in TMO and DMO. The SCK air interface encryption provides service
confidentiality between radios and infrastructure when in TMO, and between radios when in DMO. A
radio is capable of being loaded with up to 32 SCKs. Specific keys are used for encrypting the air
interface.
Any mismatch between radios and/or infrastructure impacts communication – only those using the
same key as the transmitting party are able to decode and hear the communication.
5.8.5.1

TMO SCK

Use of SCKs in TMO needs to be enabled by your service provider. The SCKs used in TMO are called
TMSCKs.
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MN002041A01–AA
Chapter 5: Main Menu
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