__________ are encrypted message components that can be mathematically proven to be authentic.
A) Digital signatures
B) MACs
C) Message certificates
D) Message digests

Question

__________ are encrypted message components that can be mathematically proven to be authentic.
A) Digital signatures
B) MACs 
C) Message certificates
D) Message digests

Quizplus · Accepted Answer

Digital signatures use public key cryptography to encrypt a hash of the message to prove authenticity and provide non-repudiation. MACs (Message Authentication Codes) use symmetric key cryptography to generate a tag that verifies message integrity but do not provide non-repudiation. Message certificates are used to verify the identity of the sender and do not provide message encryption. Message digests are a hash of the message to ensure data integrity but do not provide encryption or authentication.

__________ Are Encrypted Message Components That Can Be Mathematically Proven