You have set up a public key cryptosystem; your public encoding function is: E(2) = 2 (mod 26) Dr. Ecco, using this encoding function, has sent you the following ciphertext: PQKKP Two prime numbers are kept private for your public key cryptosystem they are: Find the decoding function. p = 2, q = 13 The decoding function is D(2) (mod Your input should look like "x^d" where d is the smallest whole number possible. You must use a lower case "r" as your variable not an uppercase "X". The feedback must read "The variables found in your answer were: [z]" otherwise your score will be 0 for this part. Find the plaintext. The plaintext is This input must be 5 letters with no spaces.