Question 1

Alice encrypts her plaintext message using an ____

so that the encrypted message, known as _____

, looks unintelligible to any intruder.

Question 2

Using a traditional Caesar Cipher; what would "Hello" be in Ciphertext? (hint k=3)

KIPPR

KIPPS

KHOOR

Question 3

John wants to ensure that Jane actually sent the message and that she can not deny sending the message. What is he trying to ensure?

Nonrepudiation

Confidentiality

Integrity

Question 4

When we want to ensure that data in transit is secure, which of the following is the BEST answer to provide for the highest level of security.

Encryption

Transport Layer Security

Diffie-Hellman Key Exchange