A CA provides which benefits to a user?
A.
Protection of public keys of all users
B.
History of symmetric keys
C.
Proof of nonrepudiation of origin
D.
Validation that a public key is associated with a particular user
Explanation:
D: A certificate authority (CA) signs an entities digital certificate to certify that the certificate content accurately represents the certificate owner. A is not a CA function because public keys are not meant to be secret. B is a function of key management. C is a function of a digital certifi cate. Page 383.
I think A is also correct.
A certificate authority (CA) signs an entities digital certificate to certify that the certificate content accurately represents the certificate owner.