______________ can provide authentication, integrity, and nonrepudiation for a message.
A) Encryption/decryption
B) Digital signature
C) Compression
D) Key-exchange

Question

Quizplus · Accepted Answer

Digital signature can provide authentication by verifying that the message is actually sent by the claimed sender, integrity by ensuring that the message has not been altered in transit, and nonrepudiation by making it difficult for the sender to deny sending the message. Encryption/decryption and key-exchange can provide confidentiality but not necessarily authentication or nonrepudiation. Compression does not provide any of the listed security features.

______________ Can Provide Authentication, Integrity, and Nonrepudiation for a Message