Non-computer part: Write or type complete answers to the two questions appropriate to the level of unit you are enrolled in, showing all working. 1. This question is for students enrolled in the mainstream unit MATH2U'68 only. Do not answer this if you are in the advanced unit MATH2QSS. {a} Suppose that you are an Elgamal user with public kegs.r {83, 2, 45] and private key 7. Note that this is consistent, because 27 E 45 {mod 83). If you receive the ciphertext {3, [58, 4]}, what is the decrypted message? {h} Find a quadratic polynomial Pris) = oz: + 555' + c, where the coeicients o, b, c belong to {I}, 1:135:11, such that the following all hold: 19(1); 1 {mod 5), F12} E 2 {mod 5), P(3} E 4 (mod 5}