$1.$ RSA with small numbers. Assume p$=7,$ q$=19.$ List all calculation steps.

$$

a$.$ What$$s the n value?

$$

$$

b$.$ What$$s value of the $($n$)?$

$$

$$

c$.$Choose e$=5,$ what$$s the d value $($private key$)?$

$$

$$

d$.$ Calculate the ciphertext using public key $($n$,$ e$)$ for the given plaintext: $12$

$$

$$

e$.$ List the formula to obtain the plaintext from the ciphertext $($you don$$t have to obtain the final result$).$

$$

d$.$ Calculate the ciphertext using public key $($n$,$ e$)$ for the given plaintext: $6$

$$

$$

e$.$ List the decryption steps to obtain the plaintext from the ciphertext.