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Question 1254 - CISSP discussion

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Using the cipher text and resultant clear text message to derive the non-alphabetic cipher key is an example of which method of cryptanalytic attack?

A.
Frequency analysis
Answers
A.
Frequency analysis
B.
Ciphertext-only attack
Answers
B.
Ciphertext-only attack
C.
Probable-plaintext attack
Answers
C.
Probable-plaintext attack
D.
Known-plaintext attack
Answers
D.
Known-plaintext attack
Suggested answer: D
asked 18/09/2024
Rob Versteeg
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