$($a$)$ Explain the terms "data encryption, authentication, and message integrity," often used in the network security literature.

$($b$)$ Gavin Halford likes to send a lengthy business proposal encrypted with McCorkendale and McCorkendale Inc. of Letric key to encrypted using public key crypto For this, Gavin chooses two primraphy $($RSA algorithm$)$ and sent to them prior to the proposal. symmetric key. McCorken prime numbers $61$ and $53,$ and a public key $=9$ to encrypt the why $(e,3233)$ and $($d$,3233)$ and McCorkendale Inc. uses $d=407$ to decrypt the data. Indicate $($c$)$ Show how the nutic and private keys.

$(1$ Point$)$