Question 4 (Research): We discussed DES and 3-DES private key cryptosystems in the lectures. Advanced Encryption Standard (AES) has evolved from DES and is currently one of the popular private key cryptosystem standards. Read online literature about AES and understand its principles and operation. In your own words, write a short summary (1 page max., 12 point font, single line spacing) of bulleted list of points that highlight your understanding of the features and operation of AES. Your one-page summary may include diagrams not exceeding half the page. References can be listed on page 2