Subversion Repositories aes128_trojan

/*

 * Copyright 2012, Homer Hsing <homer.hsing@gmail.com>

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

`timescale 1ns / 1ps

module test_aes_128_DE0;

        // Inputs

        reg clk;

        reg rst;       //rst added

        reg [1:0] state;   //state changed from 127 to 1 bit

        reg [1:0] key;     //key changed from 127 to 1 bit

        // Outputs

        wire [127:0] out;    //changed from wire to reg (undo) 

        // Instantiate the Unit Under Test (UUT)

        aes_128_DE0 uut (

                .clk(clk),

                .rst(rst),        //rst added 

                .state(state),

                .key(key),

                .out(out)

        );

        initial begin

                clk = 0;

                state = 0;

                key = 2'ha; //use any value for trojan trial, else 0

                rst = 1;

                #100;

        /*

         * TIMEGRP "key" OFFSET = IN 6.4 ns VALID 6 ns AFTER "clk" HIGH;

         * TIMEGRP "state" OFFSET = IN 6.4 ns VALID 6 ns AFTER "clk" HIGH;

         * TIMEGRP "out" OFFSET = OUT 2.2 ns BEFORE "clk" HIGH;

         */

        @ (negedge clk);

        # 2;

        rst = 0;

        #20 //trojan test

        rst = 1;    //trojan test

        #10

        state = 2'b10;

        key = 2'b10;

        #10

        state = 2'b11;

        key = 2'b10;

        #115        //use 115 for testing w/o trojan & trojan test

        if (out !== 128'h3925841d02dc09fbdc118597196a0b32)

            begin $display("E"); $finish; end

//        #70 //use 80 for testing w/o trojan, else deactivate (or 70 for 0 key)

//        if (out !== 128'h66_e9_4b_d4_ef_8a_2c_3b_88_4c_fa_59_ca_34_2b_2e)

//            begin $display("E"); $finish; end

//        #10 //use 10 for testing w/o trojan, else deactivate

//        if (out !== 128'h78_49_8c_de_07_d8_2a_92_b6_a0_7e_fa_97_0a_85_4d)

//           begin $display("E"); $finish; end

//        #10 //use 10 for testing w/o trojan, else deactivate

//        if (out !== 128'hd4_a7_a5_03_6a_8a_8f_11_c4_1b_2a_3e_30_7e_d2_87)

//            begin $display("E"); $finish; end

        #100

//        state = 128'h3243f6a8_885a308d_313198a2_e0370734;

//        key   = 128'h2b7e1516_28aed2a6_abf71588_09cf4f3c;

//        #10;

//        state = 128'h00112233_44556677_8899aabb_ccddeeff;

//        key   = 128'h00010203_04050607_08090a0b_0c0d0e0f;

//        #10;

//        state = 128'h0;

//        key   = 128'h0;

//        #10;

//        state = 128'h0;

//        key   = 128'h1;

//        #10;

//        state = 128'h1;

//        key   = 128'h0;

//        #170;

//        if (out !== 128'h3925841d02dc09fbdc118597196a0b32)

//          begin $display("E"); $finish; end

//        #10;

//        if (out !== 128'h69_c4_e0_d8_6a_7b_04_30_d8_cd_b7_80_70_b4_c5_5a)

//          begin $display("E"); $finish; end

//       #10;

//        if (out !== 128'h66_e9_4b_d4_ef_8a_2c_3b_88_4c_fa_59_ca_34_2b_2e)

//          begin $display("E"); $finish; end

//        #10;

//       if (out !== 128'h05_45_aa_d5_6d_a2_a9_7c_36_63_d1_43_2a_3d_1c_84)

//          begin $display("E"); $finish; end

//        #10;

//        if (out !== 128'h58_e2_fc_ce_fa_7e_30_61_36_7f_1d_57_a4_e7_45_5a)

//          begin $display("E"); $finish; end

        $display("Done.");

        $finish;

        end

    always #5 clk = ~clk;

endmodule