What is a crypto period, and how should key changeover be handled during a crypto period transition?

• A. A crypto period is the interval keys are valid; transitions must be planned with overlapping keys, rekey schedules, and secure distribution to avoid gaps.
• B. Crypto period is the time hardware is deployed; changeover by swapping hardware devices.
• C. Crypto period refers to software patch update cycles.
• D. Crypto period is the lifetime of a user account.

Answer: (A)