Free Response Question 1: Message Encryption
Explore how to secure messages by developing an encrypt method in Java that modifies strings, including converting case, inserting substrings, and replacing characters. Understand encryption concepts and apply Java string methods to protect data from security threats.
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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. ...