What is the effect of zeroizing KY-100 cryptographic keys?

• A. KY-100 becomes unusable
• B. Keys are cleared but unit remains fully functional
• C. Firmware is updated
• D. Unit locks but remains usable

Answer: (A)

Zeroizing crypto keys wipes out all cryptographic material that the KY-100 uses for encryption, decryption, and authentication. Without those keys, the device can’t perform its secure communications or protect traffic, so it can’t function in its intended cryptographic role. The hardware and firmware may still boot and run, but its core purpose—secure operation—is lost until keys are restored. That’s why this results in an unusable state for its main function. The other ideas don’t fit because zeroizing is not about updating firmware, nor does it leave the device fully usable in cryptographic terms, and it doesn’t simply “lock” the unit while preserving usefulness.