Question

Dieter wants to send a message to Lupa and wants to be sure that Lupa knows the message has not been modified in transit. What technique/tool could Dieter use to assist in this effort?

a) VPN (Virtual Private Network)
b) Hash function
c) Firewall
d) Antivirus software

Answer 1

Dieter can use a Hash function

Step-by-step explanation:

To ensure that the message has not been modified in transit, Dieter can use Hash function. A hash function is a mathematical algorithm that takes an input (in this case, the message) and produces a fixed-size string of characters called a hash value. If any part of the message is modified during transmission, the hash value will change as well, indicating that the message has been tampered with. By verifying the hash value with Lupa, Dieter can be confident that the message is unchanged.