1. 10 points) Draw the special purpose hardware organization for the following algorithm: Input: Ciphertext stored in four w-bit input registers A, B, C, D Number r of rounds w-bit round keys S[0; : : :; 2r +3] Output: Plaintext stored in AB.S.D Procedure: C=C-S|2r + 3] A=A-S[2r + 2] for i=r downto 1 do (A;B;C;D) = (D; A:B;C) u = (D * (2D+1)]>>>t) + u A = ((A-S[21])>>>u) + t 1 } D=D_S[1] B = BSIO]