With the __________ Scheme, If an Adversary Succeeds in Obtaining

Multiple Choice

With the __________ scheme, if an adversary succeeds in obtaining or computing the private key of the directory authority, the adversary could authoritatively pass out counterfeit public keys and subsequently impersonate any participant and eavesdrop on messages sent to any participant.

A) public key authority
B) publicly available directory
C) public key certificates
D) public announcement