Alice and Bob are using the ElGamal cipher with the parameters p$=17$

and $\backslash$alpha $=3$

$.$

Suppose Alice is observed sending public ephemeral key kE$=1$

and Bob sends public key $\backslash$beta $=6$

$.$

Their private keys are i$=16$

and d$=15$

$,$ respectively.

a$)$ What is the masking key kM$?$

b$)$ What is the encryption of x$=16?$