Now that you can encypt and decypt messages using the easier methods, you are ready to work on code for your third message and make encypition method $3.$ See the overview section for description, equation and examples.

$\backslash$table$[[,$string getloyer$2$MessageEncryption$($string cessaze, string keyphrase$)],[$Puposes$,\backslash$table$[[$The function should encypt the message based on encyption method $3.$ fit should not prift$],[$anything$.]]],[$Paremeters$,\backslash$table$[[$sting cassebe $-$ The message to be encypted.$],[$sting lay phrese $-$ The ksy phrase.$]]],[$Retum Values,If succeasiol, retum the encrypted message.$],[$Euorthanding Bounday Conditions,$],[$Exuples$,]]$