Do TrKEK provide a count towards the user key count on the TKL?

Do TrKEK provide a count towards the user key count on the TKL?

• A. Yes, they count toward the user key count.
• B. No, TrKEK do not count towards the user key count on the TKL.
• C. They count only in Military Mode.
• D. They count toward total keys but not user keys.

Answer: (B)

Key management during key loading separates keys into those the operator will actually use (user keys) and the protective keys used only to secure the transfer (like temporary key-encryption keys). TrKEK functions to wrap and protect the user keys as they move through the loading process, then it’s discarded. Because it isn’t an operational key the system uses for encryption in normal radio traffic, it does not contribute to the user key tally on the TKL. So, TrKEK aren’t counted toward the user key count, even though they play a crucial role in securely delivering those keys.

Key management during key loading separates keys into those the operator will actually use (user keys) and the protective keys used only to secure the transfer (like temporary key-encryption keys). TrKEK functions to wrap and protect the user keys as they move through the loading process, then it’s discarded. Because it isn’t an operational key the system uses for encryption in normal radio traffic, it does not contribute to the user key tally on the TKL. So, TrKEK aren’t counted toward the user key count, even though they play a crucial role in securely delivering those keys.