What is the difference between symmetric and asymmetric encryption, and what are some common use cases for each?

Mr$.$ Scott wants to send an encrypted message to Jim using Asymmetric encryption. What keys will each person use to decrypt and encrypt the message? Be specific.

How does the RSA algorithm ensure both confidentiality and authenticity in communication, and what are the key mathematical principles behind it$?$

Explain the concept of a cryptographic hash function and its properties. Why are these functions essential in digital signatures and data integrity verification?