Which procedure must be followed for priority destruction of keymat?

The correct procedure for the priority destruction of keymat requires following specific guidelines set by the CMS (Cryptographic Modernization Strategy) to ensure that sensitive information is securely and properly destroyed. These guidelines are designed to protect national security interests by ensuring that cryptographic keys and other critical materials do not fall into the wrong hands.

By adhering to these established procedures, an organization can maintain compliance with security policies and mitigate the risks associated with potentially exposing sensitive information. This ensures that all necessary steps are performed correctly, and any required documentation is properly maintained, which is crucial for accountability and auditing purposes in the realm of information security.

Other options, while they may include relevant considerations, do not align with the specific protocols established for keymat destruction as dictated by authoritative guidelines. For instance, sending all keymat for secure disposal may seem responsible, but it lacks the context of following formal procedures that have been put in place. Similarly, notifying local authorities or encrypting keymat before destruction does not fit the priority and specificity required when dealing with keymat, as these steps do not pertain to the direct destruction process itself.