Subversion Repositories threeaesc

-- Copyright (c) 2011 Antonio de la Piedra

-- This program is free software: you can redistribute it and/or modify

-- it under the terms of the GNU General Public License as published by

-- the Free Software Foundation, either version 3 of the License, or

-- (at your option) any later version.

-- This program is distributed in the hope that it will be useful,

-- but WITHOUT ANY WARRANTY; without even the implied warranty of

-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

-- GNU General Public License for more details.

-- You should have received a copy of the GNU General Public License

-- along with this program.  If not, see <http://www.gnu.org/licenses/>.

LIBRARY ieee;

USE ieee.std_logic_1164.ALL;

ENTITY tb_aes_enc IS

END tb_aes_enc;

ARCHITECTURE behavior OF tb_aes_enc IS

    -- Component Declaration for the Unit Under Test (UUT)

    COMPONENT aes_enc

    PORT(

         clk : IN  std_logic;

         block_in : IN  std_logic_vector(127 downto 0);

         sub_key : IN std_logic_vector(127 downto 0);

         last : IN std_logic;

         block_out : OUT  std_logic_vector(127 downto 0));

    END COMPONENT;

   --Inputs

   signal clk : std_logic := '0';

   signal block_in : std_logic_vector(127 downto 0) := (others => '0');

   signal sub_key : std_logic_vector(127 downto 0) := (others=> '0');

   signal last : std_logic := '0';

        --Outputs

   signal block_out : std_logic_vector(127 downto 0);

   -- Clock period definitions

   constant clk_period : time := 10 ns;

BEGIN

        -- Instantiate the Unit Under Test (UUT)

   uut: aes_enc PORT MAP (

          clk => clk,

          block_in => block_in,

          sub_key => sub_key,

          last => last,

          block_out => block_out);

   -- Clock process definitions

   clk_process :process

   begin

                clk <= '0';

                wait for clk_period/2;

                clk <= '1';

                wait for clk_period/2;

   end process;

   -- Stimulus process

   stim_proc: process

   begin

                wait for clk_period/2 + clk_period*2;

                block_in <= X"5b75966825a9e32f5b7c424c37f6652b";

                sub_key  <= X"41bf6904bf0c596cbfc9c2d24e74ffb6";

                wait for clk_period;

                assert block_out = X"add6b976204688966765efb4cb5f01d1"

                 report "Stage 1 encryption FAILED" severity FAILURE;

                block_in <= X"add6b976204688966765efb4cb5f01d1";

                sub_key  <= X"fd8d05fdbc326cf9033e3595bcf7f747";

                wait for clk_period;

                assert block_out = X"f191a5f39fe59f7283a1352a4a06178e"

                 report "Stage 2 encryption FAILED" severity FAILURE;

                wait;

   end process;

END;