CAS-002 Question #513: Real Exam Question with Answer & Explanation

The correct answer is C: Perfect forward secrecy. Perfect forward secrecy means that if an attacker discovers the material used to derive a key, that does not compromise previously generated keys. This is important as it prevents those keys from having to be replaced. Answer option A is incorrect. An authentication protocol is a

Question

__________ is the concept that disclosure of the long-term secret keying material that is used to derive an agreed key does not compromise the secrecy of agreed keys that had previously been generated.

Options

AAuthentication protocol
BDiffie-Hellman
CPerfect forward secrecy
DKey exchange protocol

Explanation

Perfect forward secrecy means that if an attacker discovers the material used to derive a key, that does not compromise previously generated keys. This is important as it prevents those keys from having to be replaced. Answer option A is incorrect. An authentication protocol is any protocol used to verify the identity of a user or machine in network communications. Answer option B is incorrect. Diffie-Hellman is a protocol for exchanging keys over an insecure Answer option D is incorrect. Key exchange protocols are only concerned with exchanging a symmetric key, not with the situation that might arise should the key derivation process become

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