What is a key characteristic of traditional (symmetric) key management?

• A. Managed by CMDAUTH
• B. Ordered and time-limited
• C. Utilizes public key encryption
• D. Changes frequently without notice

Answer: (A)

The key characteristic of traditional (symmetric) key management is that it is typically managed by a centralized authority, which is often referred to as CMDAUTH (Command Management and Data Authority). In traditional symmetric key management systems, a single key is shared among users or systems to encrypt and decrypt data. This approach requires careful control and management of the key to ensure security. By having a centralized authority, the distribution and maintenance of these keys can be effectively managed, allowing for secure communication between authorized parties.

Other aspects, such as the characteristics mentioned in the other choices, do not accurately describe traditional symmetric key management. For example, while symmetric keys can be time-limited and may change, they are generally not ordered in a systematic way. Public key encryption, mentioned in other options, pertains to asymmetric key management, where two keys (a public and a private key) are utilized. Additionally, while keys may change, they are typically communicated in a controlled manner, not frequently changed without notice, as that would lead to potential security breaches or operational challenges. Thus, the management by a centralized authority is a defining element of effective symmetric key management practices.