Which term refers to the marking or designation used to identify unencrypted COMSEC keying material used to secure communications?

• A. CRYPTO
• B. CRYPTOGRAPHIC
• C. COMSEC
• D. KEYING MATERIAL

Answer: (A)

In COMSEC practice, the label used to identify cryptographic material, including unencrypted keying material, is CRYPTO. This marking signals that the material is related to cryptography and must be handled with the same care as other sensitive crypto materials—kept under control, protected from unauthorized access, and governed by strict accounting and destruction procedures. Even though the material may be unencrypted, labeling it CRYPTO communicates its purpose and the need for secure handling to everyone who might touch it, preventing casual disclosure or loss.

The other terms don’t serve as the standard handling mark for this kind of material. They’re either too general or describe the broader category rather than the specific designation used to indicate crypto-related content that requires protection.