Operating Manual Part 15

Table Of Contents
October 2008 5300 ES Series Mobile Radio Operating Manual 10-15
Secure Communication (Encryption)
MODIFY KEY 0x13
MODIFY KEYSET ATTRIBUTES 0x14
MODIFY KEYSET ATTRIBUTES RESPONSE 0x15
NEGATIVE ACK 0x16
NO SERVICE 0x17
REKEY ACK 0x1D
REKEY 0x1E
WARM START 0x20
ZEROIZE 0x21
ZEROIZE RESPONSE 0x22
OTAR REGISTRATION 0x25
OTAR REGISTARTION RESPONSE 0x26
UNABLE TO DECRYPT 0x27
10.6.1 OTAR Option Switches
The following additional option switches can be programmed with the 5300 ES mobile
radio to control OTAR functions.
Change Keyset - Toggles the active keyset between Keyset 1 and Keyset 2. The new
active keyset is briefly displayed and then normal operation resumes. To change to the
other keyset, highlight it and press the <F2> key.
Clear/Secure Select - This enables and disables encryption regardless of whether
OTAR is used. Refer to Section 10.3 for more information.
Erase Keys - Erases all TEK and KEK keys contained in the radio.
Key Select - This allows a different key to be selected for the current channel or group
(conventional channels only). Refer to Section 10.2.4 for more information.
OTAR Rekey Request - Sends a message which tells the KMF that the radio is on the
air and requests rekeying. The following status messages are displayed which indicate
the progress of this function.
Rekeying - A radio-initiated rekeying session is in process.
No Ack - No response was received from the KMF in response to an Identify request
before time out occurred (approximately 30 seconds).
Ack Rcvd - An acknowledgement was received in response to an Identify request.