1. For Simplified AES, show the calculation of how SBOX maps 0100 to 1101. It means that find the associated polynomial to 0100, invert it, and turn it to an element N(y) of F2[y]/(y4 + 1) and find (y + y + 1)(y) + (y + 1). Then turn this into a nibble and show that it is equal to 1101. 1. For Simplified AES, show the calculation of how SBOX maps 0100 to 1101. It means that find the associated polynomial to 0100, invert it, and turn it to an element N(y) of F2[y]/(y4 + 1) and find (y + y + 1)(y) + (y + 1). Then turn this into a nibble and show that it is equal to 1101