Exam CAS-005 Topic 2 Question 59 Discussion
Actual exam question for CompTIA's CAS-005 exam
Question #: 59
Topic #: 2
Question #: 59
Topic #: 2
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?
Suggested Answer: C Vote an answer
Comprehensive and Detailed In-Depth 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.
* Other options:
* A (Tokenization) replaces sensitive data with tokens but does not prevent key compromise.
* B (Key stretching) makes brute-force attacks harder but does not ensure secrecy after compromise.
* D (Simultaneous Authentication of Equals - SAE) is used in WPA3 but is not related to past communication security.
* 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.
* Other options:
* A (Tokenization) replaces sensitive data with tokens but does not prevent key compromise.
* B (Key stretching) makes brute-force attacks harder but does not ensure secrecy after compromise.
* D (Simultaneous Authentication of Equals - SAE) is used in WPA3 but is not related to past communication security.
by Channing at Apr 09, 2026, 06:28 PM
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