Erase Previous Index on Index Change |
(Secure Wide, MDC OTAR) |
Enables the erasing of all
encryption keys in the previously active Keyset after an MDC
OTAR (Over-The-Air-Rekeying) keyset change occurs. This feature does not affect
non-indexed keys (see Indexed). This
feature applies to secure encrypted
mode MDC OTAR communications. 
An OTAR keyset change is initiated either from the Key Management Controller
(KMC) or is radio-user initiated with a CPS-programmable
Conventional 
Rekey
menu-selection.
|
When this Erase Previous Keyset on Index Change field is enabled and when the Erase Previous (Keyset) On User Change is enabled, it is possible for the radio-user to erase both keysets and be momentarily without any secure encryption keys. EXAMPLE: The radio is currently operating on Keyset 1 when an OTAR Keyset Change occurs; it changes the radio to Keyset 2 and erases the radio's previous Keyset 1. Then if the radio-user manually changes back to Keyset 1 that has been erased, and the Erase Previous on User Change feature erases the previous Keyset 2, then the radio would remain keyless until the radio-user manually loads new keys, or requests a manual OTAR Rekey. |
When the Secure Operation field is set to "Hardware" and
when the OTAR Enable field is enabled, and
when the MDC OTAR Enable field is enabled, and
when the radio is model / option capable.
