In the novel Incidents in the life of a slave girl by Harriet Ann Jacobs, the protagonist Linda Brent is characterized by her stubbornness and bravery as she refuses to give in to the pressures placed on her by both society and her Master, Dr. Flint. Throughout the novel, she consistently persists to disregard Dr. Flint's sexual advances towards her as she even goes so far as to hide inside of her own house for seven years. Most people would give into the societal pressure of servitude, but Linda is a stubborn and strong African American slave who takes control of her own destiny.
I think the questions that must be ask are:
a.What does “encryption” mean?
d.What are “key distribution problems”?
All the text is based on the concept "encryption" so it is very important to know what it means in order to undestand the rest of the information. If not, you will be missing important facts. In addition, there are a lot of words used that are derived from this one, so you won't be able to undestand them.
Another important concept that gives a lot of information just by knowing it's meaning is "key distribution problems", they could be two or a thousand, it is important to know what they are and what they do.
The other question that seems important is the one of the "public key cryphtography" but this one can be inferred by the context.
Lee ensured that the reader would be predisposed to distrust the Ewells simply by focusing on two main characteristics: appearance, and intellect. The Ewells, from the very start, appeared unpleasant, lacking in basic intellect, and immoral.
The main idea is the first sentence (1). The rest of the paragraph supports the main idea that preventing social problems is the goal of many programs.