Chapter 5 Study Guide

Question 1

Diffie-Hellman

Answer 1

Asymetric method to share symetric keys from one person to another.

Question 2

Session Key

Answer 2

A key generated for one session only, after that session the key becomes useless.

Question 3

Ephemeral key

Answer 3

Uses a different key for each connection estabishment.

Question 4

Difference between Sesson and Ephemeral keys

Answer 4

Session is for the duration of a sesssion, Ephemeral is used to establish connection.

Question 5

How do keys get passed via Diffie-Hellman

Answer 5

• Person 1 uses Person 2’s public key to encrypt the message, then the message is sent.
• person 2 uses person 2’s private key to decrypt.
• Same as PKI encryption.