Which term describes the protection mechanism for cryptographic keys used in DoD communications?

• A. Electronic Key Management System
• B. Key Management Protocol
• C. Cryptographic Key Custodian
• D. Secure Key Repository

Answer: (A)

The protection mechanism for cryptographic keys used in DoD communications is the Electronic Key Management System. EKMS provides the full lifecycle management of keying material—generating keys, distributing them securely to crypto devices, storing them safely, renewing or revoking keys as needed, and ultimately retiring them. It automates and centralizes these processes to ensure only authorized devices and personnel access keys, keeps an auditable trail of key activity, and reduces the risk of key compromise compared with manual handoffs. The other terms describe either a generic protocol, a role, or a storage location, but do not capture the comprehensive system that safeguards keys throughout their entire lifecycle in DoD operations.