Use the PH Cipher to decrypt the ciphertext $1407$ if $p=2621$ and $e=11.($Hint: what is d$?)$ Use the parameters of $p=2663,g=1085,a=1085,$ and $b=1701$ to find the shared key between Alice and Bob.

Use the PH Cipher to decrypt the ciphertext $1407$ if $p=2621$ and $e=11.($Hint: what is d$?)$

Use the parameters of $p=2663,g=1085,a=1085,$ and $b=1701$ to find the shared key between Alice and Bob.