An attacker captures the encrypted communication between two parties for a week, but is unable
to decrypt the messages. The attacker then compromises the session key during one exchange
and successfully compromises a single message. The attacker plans to use this key to decrypt
previously captured and future communications, but is unable to. This is because the encryption
scheme in use adheres to:
A.
Asymmetric encryption
B.
Out-of-band key exchange
C.
Perfect forward secrecy
D.
Secure key escrow