What is NOT an authorized method for the destruction of canister packaged keying material?

• A. Cross-cut shredding
• B. Burning
• C. Canister disposal
• D. Any of the above

Answer: (C)

The correct answer is that canister disposal is not an authorized method for the destruction of canister packaged keying material. This is essential because effective destruction of keying material must ensure that it cannot be reconstructed or retrieved, which preserves the integrity of communication security.

Cross-cut shredding and burning are both accepted methods for destroying keying material as they effectively render the material unusable. Cross-cut shredding mechanically destroys the material into small pieces, making reconstruction impossible. Burning, when done properly, incinerates the material entirely, ensuring that no recoverable traces remain.

In contrast, canister disposal suggests simply discarding the canister, which does not guarantee that the keying material is destroyed or inaccessible. As such, it fails to meet the stringent requirements necessary for maintaining communication security, which demands that sensitive materials are adequately destroyed to prevent unauthorized access.