Intermediate
Cybersecurity & Cryptography
Q43 / 100
What is forward secrecy (Perfect Forward Secrecy)?
Correct! Well done.
Incorrect.
The correct answer is B) The property that compromise of long-term keys does not compromise past session keys — achieved by generating fresh ephemeral key pairs per session
B
Correct Answer
The property that compromise of long-term keys does not compromise past session keys — achieved by generating fresh ephemeral key pairs per session
Explanation
PFS: each TLS session uses ephemeral DH/ECDH keys. If the server's private key is later compromised, past sessions cannot be decrypted. TLS 1.3 mandates PFS; TLS 1.2 made it optional.
Progress
43/100