Previously intercepted communications must remain secure even if a current encryption key is compromised in the future. Which of the following best supports this requirement?

The correct answer is C. Forward secrecy. Forward secrecy (FS) ensures that past encrypted data remains secure even if encryption keys are compromised in the future. It generates ephemeral session keys that are not reused.

Submitted by tyler.j· Mar 6, 2026Security Engineering

Question

Options

ATokenization
BKey stretching
CForward secrecy
DSimultaneous authentication of equals

How the community answered

(45 responses)

B
2% (1)
C
93% (42)
D
4% (2)

Explanation

Forward secrecy (FS) ensures that past encrypted data remains secure even if encryption keys are compromised in the future. It generates ephemeral session keys that are not reused.

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