Please write short essay answers discussing the following "questions: 1.. Give an (example of why data encry ption i s needed and when y ou would use encryption. 2. Name th ree data elements exam ples t hat woul d requi re data encrypt ion (pe r regulations such as, HIPPA) 3. Discus the pros and cons between the use of hashing versus the use of encry ption 0n. 4.Discus s key mana gement techniques. What are som e of the cons iderations and issues? Give at least t wo examples of key management techniques. .