Free Response Question 1: Message Encryption

Background

We humans are so concerned about our private information and property. We make sure that all of our personal holdings remain confidential. The Internet has transformed our lives, but it also brings a massive increase to security threats.

In real life, one of the most attempted crimes is robbery. Unfortunately, there are burglars in the computing world also. They’re a real threat to our data. They can misuse our private information, once it’s leaked. So, we need to make sure that our data is safe.

Let’s discuss a common threat. Suppose person A wants to send some private information to person B. There may be a black hat somewhere in between, waiting for the transmission.