mul60.vhd

在gf(2^13)中

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-- Company: 
-- Engineer:
--
-- Create Date:    16:55:48 04/09/08
-- Design Name:    
-- Module Name:    mul60 - Behavioral
-- Project Name:   
-- Target Device:  
-- Tool versions:  
-- Description:
--
-- Dependencies:
-- 
-- Revision:
-- Revision 0.01 - File Created
-- Additional Comments:
-- 
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library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

---- Uncomment the following library declaration if instantiating
---- any Xilinx primitives in this code.
--library UNISIM;
--use UNISIM.VComponents.all;

entity mul60 is
		port( 
				mul60_in:in std_logic_vector(12 downto 0);	  --msb_lsb
	     		mul60_out:out std_logic_vector(12 downto 0)
		  );
end mul60;

architecture Behavioral of mul60 is

begin

mul60_out(0)<=mul60_in(3) xor mul60_in(10) xor mul60_in(9) xor mul60_in(7) xor mul60_in(6);
mul60_out(1)<=mul60_in(8) xor mul60_in(3) xor mul60_in(11) xor mul60_in(0) xor mul60_in(9) xor mul60_in(6) xor mul60_in(4);
mul60_out(2)<=mul60_in(12) xor mul60_in(4) xor mul60_in(1) xor mul60_in(7) xor mul60_in(5) xor mul60_in(9) xor mul60_in(10);
mul60_out(3)<=mul60_in(3) xor mul60_in(2) xor mul60_in(0) xor mul60_in(7) xor mul60_in(9) xor mul60_in(11) xor mul60_in(5) xor mul60_in(8);
mul60_out(4)<=mul60_in(7) xor mul60_in(12) xor mul60_in(1) xor mul60_in(8) xor mul60_in(0) xor mul60_in(4);
mul60_out(5)<=mul60_in(8) xor mul60_in(5) xor mul60_in(2) xor mul60_in(9) xor mul60_in(1);
mul60_out(6)<=mul60_in(2) xor mul60_in(3) xor mul60_in(0) xor mul60_in(9) xor mul60_in(6) xor mul60_in(10);
mul60_out(7)<=mul60_in(1) xor mul60_in(7) xor mul60_in(10) xor mul60_in(0) xor mul60_in(4) xor mul60_in(3) xor mul60_in(11);
mul60_out(8)<=mul60_in(11) xor mul60_in(1) xor mul60_in(2) xor mul60_in(12) xor mul60_in(5) xor mul60_in(8) xor mul60_in(4);
mul60_out(9)<=mul60_in(6) xor mul60_in(12) xor mul60_in(9) xor mul60_in(3) xor mul60_in(5) xor mul60_in(2);
mul60_out(10)<=mul60_in(0) xor mul60_in(10) xor mul60_in(7) xor mul60_in(4) xor mul60_in(6) xor mul60_in(3);
mul60_out(11)<=mul60_in(8) xor mul60_in(5) xor mul60_in(4) xor mul60_in(7) xor mul60_in(11) xor mul60_in(1);
mul60_out(12)<=mul60_in(8) xor mul60_in(5) xor mul60_in(2) xor mul60_in(6) xor mul60_in(12) xor mul60_in(9);

end Behavioral;