Beginning of Essay
Encryption is the process of disguising information by transforming plain text into gibberish, or ciphertext, which cannot be understood by an unauthorized person. Decryption is the process of transforming ciphertext back into plaintext that can be read by anyone ....

Middle of Essay
.... letter in our message with the letter that comes four places later in the alphabet. D would become H; R would become V, and so on. You, or anyone else who knows the key can easily switch the H back to a D, the V back to an R, and figure out where to meet. Theses two examples are on opposite sides of the spectrum, but both have their similarities and their differences. The major difference complexity, the government pays mathematicians to research complex algorithms by which to encode the messages, like the system used by Captain Video but these algorithms are complex enough that if you tried to crack them it would take you decades with even th ....