Perfect Forward Secrecy (PFS) is a property of secure communication protocols that ensures session keys are not compromised even if the private key of the server is compromised in the future. This means that even if someone captures encrypted messages from a session, they cannot decrypt those messages later, providing strong confidentiality for past communications. This feature enhances the security of protocols by ensuring that the compromise of long-term keys does not lead to the exposure of past session keys.
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