tmeissner
/
cryptocores


								-- ======================================================================

								-- CBC-DES encryption/decryption testbench

								-- tests according to NIST 800-17 special publication

								-- Copyright (C) 2011 Torsten Meissner

								-------------------------------------------------------------------------

								-- 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 2 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, write to the Free Software

								-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

								-- ======================================================================


								-- Revision 1.0   2011/09/23

								-- Initial release, variable plaintext known answer test integrated

								-- Revision 1.1   2011/09/25

								-- integrated all encryption tests of NIST 800-17 publication except the modes-tests


								library ieee;

								use ieee.std_logic_1164.all;

								use ieee.numeric_std.all;


								entity tb_cbcdes is

								end entity tb_cbcdes;


								architecture rtl of tb_cbcdes is


								  type t_array is array (natural range <>) of std_logic_vector(0 to 63);


								  constant c_variable_plaintext_known_answers : t_array(0 to 63) :=

								    (x"95F8A5E5DD31D900", x"DD7F121CA5015619", x"2E8653104F3834EA",

								     x"4BD388FF6CD81D4F", x"20B9E767B2FB1456", x"55579380D77138EF",

								     x"6CC5DEFAAF04512F", x"0D9F279BA5D87260", x"D9031B0271BD5A0A",

								     x"424250B37C3DD951", x"B8061B7ECD9A21E5", x"F15D0F286B65BD28",

								     x"ADD0CC8D6E5DEBA1", x"E6D5F82752AD63D1", x"ECBFE3BD3F591A5E",

								     x"F356834379D165CD", x"2B9F982F20037FA9", x"889DE068A16F0BE6",

								     x"E19E275D846A1298", x"329A8ED523D71AEC", x"E7FCE22557D23C97",

								     x"12A9F5817FF2D65D", x"A484C3AD38DC9C19", x"FBE00A8A1EF8AD72",

								     x"750D079407521363", x"64FEED9C724C2FAF", x"F02B263B328E2B60",

								     x"9D64555A9A10B852", x"D106FF0BED5255D7", x"E1652C6B138C64A5",

								     x"E428581186EC8F46", x"AEB5F5EDE22D1A36", x"E943D7568AEC0C5C",

								     x"DF98C8276F54B04B", x"B160E4680F6C696F", x"FA0752B07D9C4AB8",

								     x"CA3A2B036DBC8502", x"5E0905517BB59BCF", x"814EEB3B91D90726",

								     x"4D49DB1532919C9F", x"25EB5FC3F8CF0621", x"AB6A20C0620D1C6F",

								     x"79E90DBC98F92CCA", x"866ECEDD8072BB0E", x"8B54536F2F3E64A8",

								     x"EA51D3975595B86B", x"CAFFC6AC4542DE31", x"8DD45A2DDF90796C",

								     x"1029D55E880EC2D0", x"5D86CB23639DBEA9", x"1D1CA853AE7C0C5F",

								     x"CE332329248F3228", x"8405D1ABE24FB942", x"E643D78090CA4207",

								     x"48221B9937748A23", x"DD7C0BBD61FAFD54", x"2FBC291A570DB5C4",

								     x"E07C30D7E4E26E12", x"0953E2258E8E90A1", x"5B711BC4CEEBF2EE",

								     x"CC083F1E6D9E85F6", x"D2FD8867D50D2DFE", x"06E7EA22CE92708F",

								     x"166B40B44ABA4BD6");


								  constant c_variable_key_known_answers : t_array(0 to 55) :=

								    (x"95A8D72813DAA94D", x"0EEC1487DD8C26D5", x"7AD16FFB79C45926",

								     x"D3746294CA6A6CF3", x"809F5F873C1FD761", x"C02FAFFEC989D1FC",

								     x"4615AA1D33E72F10", x"2055123350C00858", x"DF3B99D6577397C8",

								     x"31FE17369B5288C9", x"DFDD3CC64DAE1642", x"178C83CE2B399D94",

								     x"50F636324A9B7F80", x"A8468EE3BC18F06D", x"A2DC9E92FD3CDE92",

								     x"CAC09F797D031287", x"90BA680B22AEB525", x"CE7A24F350E280B6",

								     x"882BFF0AA01A0B87", x"25610288924511C2", x"C71516C29C75D170",

								     x"5199C29A52C9F059", x"C22F0A294A71F29F", x"EE371483714C02EA",

								     x"A81FBD448F9E522F", x"4F644C92E192DFED", x"1AFA9A66A6DF92AE",

								     x"B3C1CC715CB879D8", x"19D032E64AB0BD8B", x"3CFAA7A7DC8720DC",

								     x"B7265F7F447AC6F3", x"9DB73B3C0D163F54", x"8181B65BABF4A975",

								     x"93C9B64042EAA240", x"5570530829705592", x"8638809E878787A0",

								     x"41B9A79AF79AC208", x"7A9BE42F2009A892", x"29038D56BA6D2745",

								     x"5495C6ABF1E5DF51", x"AE13DBD561488933", x"024D1FFA8904E389",

								     x"D1399712F99BF02E", x"14C1D7C1CFFEC79E", x"1DE5279DAE3BED6F",

								     x"E941A33F85501303", x"DA99DBBC9A03F379", x"B7FC92F91D8E92E9",

								     x"AE8E5CAA3CA04E85", x"9CC62DF43B6EED74", x"D863DBB5C59A91A0",

								     x"A1AB2190545B91D7", x"0875041E64C570F7", x"5A594528BEBEF1CC",

								     x"FCDB3291DE21F0C0", x"869EFD7F9F265A09");


								  constant c_permutation_operation_known_answers_keys : t_array(0 to 31) :=

								    (x"1046913489980131", x"1007103489988020", x"10071034C8980120",

								     x"1046103489988020", x"1086911519190101", x"1086911519580101",

								     x"5107B01519580101", x"1007B01519190101", x"3107915498080101",

								     x"3107919498080101", x"10079115B9080140", x"3107911598080140",

								     x"1007D01589980101", x"9107911589980101", x"9107D01589190101",

								     x"1007D01598980120", x"1007940498190101", x"0107910491190401",

								     x"0107910491190101", x"0107940491190401", x"19079210981A0101",

								     x"1007911998190801", x"10079119981A0801", x"1007921098190101",

								     x"100791159819010B", x"1004801598190101", x"1004801598190102",

								     x"1004801598190108", x"1002911598100104", x"1002911598190104",

								     x"1002911598100201", x"1002911698100101");


								  constant c_permutation_operation_known_answers_cipher : t_array(0 to 31) :=

								    (x"88D55E54F54C97B4", x"0C0CC00C83EA48FD", x"83BC8EF3A6570183",

								     x"DF725DCAD94EA2E9", x"E652B53B550BE8B0", x"AF527120C485CBB0",

								     x"0F04CE393DB926D5", x"C9F00FFC74079067", x"7CFD82A593252B4E",

								     x"CB49A2F9E91363E3", x"00B588BE70D23F56", x"406A9A6AB43399AE",

								     x"6CB773611DCA9ADA", x"67FD21C17DBB5D70", x"9592CB4110430787",

								     x"A6B7FF68A318DDD3", x"4D102196C914CA16", x"2DFA9F4573594965",

								     x"B46604816C0E0774", x"6E7E6221A4F34E87", x"AA85E74643233199",

								     x"2E5A19DB4D1962D6", x"23A866A809D30894", x"D812D961F017D320",

								     x"055605816E58608F", x"ABD88E8B1B7716F1", x"537AC95BE69DA1E1",

								     x"AED0F6AE3C25CDD8", x"B3E35A5EE53E7B8D", x"61C79C71921A2EF8",

								     x"E2F5728F0995013C", x"1AEAC39A61F0A464");


								  constant c_substitution_table_test_keys : t_array(0 to 18) :=

								    (x"7CA110454A1A6E57", x"0131D9619DC1376E", x"07A1133E4A0B2686",

								     x"3849674C2602319E", x"04B915BA43FEB5B6", x"0113B970FD34F2CE",

								     x"0170F175468FB5E6", x"43297FAD38E373FE", x"07A7137045DA2A16",

								     x"04689104C2FD3B2F", x"37D06BB516CB7546", x"1F08260D1AC2465E",

								     x"584023641ABA6176", x"025816164629B007", x"49793EBC79B3258F",

								     x"4FB05E1515AB73A7", x"49E95D6D4CA229BF", x"018310DC409B26D6",

								     x"1C587F1C13924FEF");


								  constant c_substitution_table_test_plain : t_array(0 to 18) :=

								    (x"01A1D6D039776742", x"5CD54CA83DEF57DA", x"0248D43806F67172",

								     x"51454B582DDF440A", x"42FD443059577FA2", x"059B5E0851CF143A",

								     x"0756D8E0774761D2", x"762514B829BF486A", x"3BDD119049372802",

								     x"26955F6835AF609A", x"164D5E404F275232", x"6B056E18759F5CCA",

								     x"004BD6EF09176062", x"480D39006EE762F2", x"437540C8698F3CFA",

								     x"072D43A077075292", x"02FE55778117F12A", x"1D9D5C5018F728C2",

								     x"305532286D6F295A");


								  constant c_substitution_table_test_cipher : t_array(0 to 18) :=

								    (x"690F5B0D9A26939B", x"7A389D10354BD271", x"868EBB51CAB4599A",

								     x"7178876E01F19B2A", x"AF37FB421F8C4095", x"86A560F10EC6D85B",

								     x"0CD3DA020021DC09", x"EA676B2CB7DB2B7A", x"DFD64A815CAF1A0F",

								     x"5C513C9C4886C088", x"0A2AEEAE3FF4AB77", x"EF1BF03E5DFA575A",

								     x"88BF0DB6D70DEE56", x"A1F9915541020B56", x"6FBF1CAFCFFD0556",

								     x"2F22E49BAB7CA1AC", x"5A6B612CC26CCE4A", x"5F4C038ED12B2E41",

								     x"63FAC0D034D9F793");


								  signal s_reset    : std_logic := '0';

								  signal s_clk      : std_logic := '0';

								  signal s_start    : std_logic := '0';

								  signal s_mode     : std_logic := '0';

								  signal s_key      : std_logic_vector(0 to 63) := (others => '0');

								  signal s_iv       : std_logic_vector(0 to 63) := (others => '0');

								  signal s_datain   : std_logic_vector(0 to 63) := (others => '0');

								  signal s_validin  : std_logic := '0';

								  signal s_ready    : std_logic := '0';

								  signal s_dataout  : std_logic_vector(0 to 63);

								  signal s_validout : std_logic;


								  component cbcdes is

								    port (

								      reset_i     : in  std_logic;

								      clk_i       : in  std_logic;

								      mode_i      : in  std_logic;

								      start_i     : in  std_logic;

								      iv_i        : in  std_logic_vector(0 to 63);

								      key_i       : in  std_logic_vector(0 TO 63);

								      data_i      : in  std_logic_vector(0 TO 63);

								      valid_i     : in  std_logic;

								      ready_o     : out std_logic;

								      data_o      : out std_logic_vector(0 TO 63);

								      valid_o     : out std_logic

								    );

								  end component cbcdes;


								begin


								  s_reset <= '1' after 100 ns;

								  s_clk   <= not(s_clk) after 10 ns;


								  teststimuliP : process is

								  begin

								    -- ENCRYPTION TESTS

								    s_start   <= '0';

								    s_mode    <= '0';

								    s_validin <= '0';

								    s_iv      <= (others => '0');

								    s_key     <= x"0101010101010101";

								    s_datain  <= x"8000000000000000";

								    -- Variable plaintext known answer test

								    for index in c_variable_plaintext_known_answers'range loop

								      wait until rising_edge(s_clk) and s_ready = '1';

								        s_validin <= '1';

								        s_start   <= '1';

								        if(index /= 0) then

								          s_datain <= '0' & s_datain(0 to 62);

								        end if;

								      wait until rising_edge(s_clk);

								        s_validin <= '0';

								        s_start   <= '0';

								    end loop;

								    wait until rising_edge(s_clk);

								    s_start   <= '0';

								    s_mode    <= '0';

								    s_validin <= '0';

								    s_iv      <= (others => '0');

								    s_key     <= (others => '0');

								    s_datain  <= (others => '0');

								    wait for 1 us;

								    -- Inverse permutation known answer test

								    s_key     <= x"0101010101010101";

								    for index in c_variable_plaintext_known_answers'range loop

								      wait until rising_edge(s_clk) and s_ready = '1';

								        s_validin <= '1';

								        s_start   <= '1';

								        s_datain  <= c_variable_plaintext_known_answers(index);

								      wait until rising_edge(s_clk);

								        s_validin <= '0';

								        s_start   <= '0';

								    end loop;

								    wait until rising_edge(s_clk);

								    s_start   <= '0';

								    s_mode    <= '0';

								    s_validin <= '0';

								    s_iv      <= (others => '0');

								    s_key     <= (others => '0');

								    s_datain  <= (others => '0');

								    wait for 1 us;

								    -- Variable key known answer test

								    s_key     <= x"8000000000000000";

								    for index in c_variable_key_known_answers'range loop

								      wait until rising_edge(s_clk) and s_ready = '1';

								        s_validin <= '1';

								        s_start   <= '1';

								        if(index /= 0) then

								          if(index = 7 or index = 14 or index = 21 or index = 28 or index = 35 or

								             index = 42 or index = 49) then

								            s_key <= "00" & s_key(0 to 61);

								          else

								            s_key <= '0' & s_key(0 to 62);

								          end if;

								        end if;

								      wait until rising_edge(s_clk);

								        s_validin <= '0';

								        s_start   <= '0';

								    end loop;

								    wait until rising_edge(s_clk);

								    s_start   <= '0';

								    s_mode    <= '0';

								    s_validin <= '0';

								    s_iv      <= (others => '0');

								    s_key     <= (others => '0');

								    s_datain  <= (others => '0');

								    wait for 1 us;

								    -- Permutation operation known answer test

								    s_datain <= x"0000000000000000";

								    for index in c_permutation_operation_known_answers_keys'range loop

								      wait until rising_edge(s_clk) and s_ready = '1';

								        s_validin <= '1';

								        s_start   <= '1';

								        s_key     <= c_permutation_operation_known_answers_keys(index);

								      wait until rising_edge(s_clk);

								        s_validin <= '0';

								        s_start   <= '0';

								    end loop;

								    wait until rising_edge(s_clk);

								    s_start   <= '0';

								    s_mode    <= '0';

								    s_validin <= '0';

								    s_iv      <= (others => '0');

								    s_key     <= (others => '0');

								    s_datain  <= (others => '0');

								    wait for 1 us;

								    -- Substitution table known answer test

								    for index in c_substitution_table_test_keys'range loop

								      wait until rising_edge(s_clk) and s_ready = '1';

								        s_validin <= '1';

								        s_start   <= '1';

								        s_key     <= c_substitution_table_test_keys(index);

								        s_datain  <= c_substitution_table_test_plain(index);

								      wait until rising_edge(s_clk);

								        s_validin <= '0';

								        s_start   <= '0';

								    end loop;

								    wait until rising_edge(s_clk);

								    -- DECRYPTION TESTS

								    s_start   <= '0';

								    s_mode    <= '0';

								    s_validin <= '0';

								    s_iv      <= (others => '0');

								    s_key     <= (others => '0');

								    s_datain  <= (others => '0');

								    wait for 1 us;

								--    -- Variable ciphertext known answer test

								--    s_key     <= x"0101010101010101";

								--    for index in c_variable_plaintext_known_answers'range loop

								--      wait until rising_edge(s_clk);

								--        s_mode    <= '1';

								--        s_validin <= '1';

								--        s_datain  <= c_variable_plaintext_known_answers(index);

								--    end loop;

								--    wait until rising_edge(s_clk);

								--    s_mode    <= '0';

								--    s_validin <= '0';

								--    s_key     <= (others => '0');

								--    s_datain  <= (others => '0');

								--    wait for 100 ns;

								--    -- Initial permutation known answer test

								--    s_key     <= x"0101010101010101";

								--    s_datain  <= x"8000000000000000";

								--    for index in c_variable_plaintext_known_answers'range loop

								--      wait until rising_edge(s_clk);

								--        s_mode    <= '1';

								--        s_validin <= '1';

								--        if(index /= 0) then

								--          s_datain <= '0' & s_datain(0 to 62);

								--        end if;

								--    end loop;

								--    wait until rising_edge(s_clk);

								--    s_mode    <= '0';

								--    s_validin <= '0';

								--    s_key     <= (others => '0');

								--    s_datain  <= (others => '0');

								--    -- Variable key known answer test

								--    s_key     <= x"8000000000000000";

								--    for index in c_variable_key_known_answers'range loop

								--      wait until rising_edge(s_clk);

								--        s_mode    <= '1';

								--        s_validin <= '1';

								--        s_datain  <= c_variable_key_known_answers(index);

								--        if(index /= 0) then

								--          if(index = 7 or index = 14 or index = 21 or index = 28 or index = 35 or

								--             index = 42 or index = 49) then

								--            s_key <= "00" & s_key(0 to 61);

								--          else

								--            s_key <= '0' & s_key(0 to 62);

								--          end if;

								--        end if;

								--    end loop;

								--    wait until rising_edge(s_clk);

								--    s_mode    <= '0';

								--    s_validin <= '0';

								--    s_key     <= (others => '0');

								--    s_datain  <= (others => '0');

								--    wait for 100 ns;

								--    -- Permutation operation known answer test

								--    for index in c_permutation_operation_known_answers_keys'range loop

								--      wait until rising_edge(s_clk);

								--        s_mode    <= '1';

								--        s_validin <= '1';

								--        s_datain  <= c_permutation_operation_known_answers_cipher(index);

								--        s_key     <= c_permutation_operation_known_answers_keys(index);

								--    end loop;

								--    wait until rising_edge(s_clk);

								--    s_mode    <= '0';

								--    s_validin <= '0';

								--    s_key     <= (others => '0');

								--    s_datain  <= (others => '0');

								--    wait for 100 ns;

								--    -- Substitution table known answer test

								--    for index in c_substitution_table_test_keys'range loop

								--      wait until rising_edge(s_clk);

								--        s_mode    <= '1';

								--        s_validin <= '1';

								--        s_key     <= c_substitution_table_test_keys(index);

								--        s_datain  <= c_substitution_table_test_cipher(index);

								--    end loop;

								--    wait until rising_edge(s_clk);

								--    s_mode    <= '0';

								--    s_validin <= '0';

								--    s_key     <= (others => '0');

								--    s_datain  <= (others => '0');

								    wait;

								  end process teststimuliP;


								  testcheckerP : process is

								    variable v_plaintext : std_logic_vector(0 to 63) := x"8000000000000000";

								  begin

								    report "# ENCRYPTION TESTS";

								    report "# Variable plaintext known answer test";

								    for index in c_variable_plaintext_known_answers'range loop

								      wait until rising_edge(s_clk) and s_validout = '1';

								        assert (s_dataout = c_variable_plaintext_known_answers(index))

								          report "encryption error"

								          severity error;

								    end loop;

								    report "# Inverse permutation known answer test";

								    for index in c_variable_plaintext_known_answers'range loop

								      wait until rising_edge(s_clk) and s_validout = '1';

								        assert (s_dataout = v_plaintext)

								          report "encryption error"

								          severity error;

								        v_plaintext := '0' & v_plaintext(0 to 62);

								    end loop;

								    report "# Variable key known answer test";

								    for index in c_variable_key_known_answers'range loop

								      wait until rising_edge(s_clk) and s_validout = '1';

								        assert (s_dataout = c_variable_key_known_answers(index))

								          report "encryption error"

								          severity error;

								    end loop;

								    report "# Permutation operation known answer test";

								    for index in c_permutation_operation_known_answers_cipher'range loop

								      wait until rising_edge(s_clk) and s_validout = '1';

								        assert (s_dataout = c_permutation_operation_known_answers_cipher(index))

								          report "encryption error"

								          severity error;

								    end loop;

								    report "# Substitution table known answer test";

								    for index in c_substitution_table_test_cipher'range loop

								      wait until rising_edge(s_clk) and s_validout = '1';

								        assert (s_dataout = c_substitution_table_test_cipher(index))

								          report "encryption error"

								          severity error;

								    end loop;

								--    report "# DECRYPTION TESTS";

								--    report "# Variable ciphertext known answer test";

								--    v_plaintext := x"8000000000000000";

								--    for index in c_variable_plaintext_known_answers'range loop

								--      wait until rising_edge(s_clk) and s_validout = '1';

								--        assert (s_dataout = v_plaintext)

								--          report "decryption error"

								--          severity error;

								--        v_plaintext := '0' & v_plaintext(0 to 62);

								--    end loop;

								--    report "# Initial permutation known answer test";

								--    for index in c_variable_plaintext_known_answers'range loop

								--      wait until rising_edge(s_clk) and s_validout = '1';

								--        assert (s_dataout = c_variable_plaintext_known_answers(index))

								--          report "decryption error"

								--          severity error;

								--    end loop;

								--    report "# Variable key known answer test";

								--    for index in c_variable_key_known_answers'range loop

								--      wait until rising_edge(s_clk) and s_validout = '1';

								--        assert (s_dataout = x"0000000000000000")

								--          report "decryption error"

								--          severity error;

								--    end loop;

								--    report "# Permutation operation known answer test";

								--    for index in c_permutation_operation_known_answers_keys'range loop

								--      wait until rising_edge(s_clk) and s_validout = '1';

								--        assert (s_dataout = x"0000000000000000")

								--          report "decryption error"

								--          severity error;

								--    end loop;

								--    report "# Substitution table known answer test";

								--    for index in c_substitution_table_test_cipher'range loop

								--      wait until rising_edge(s_clk) and s_validout = '1';

								--        assert (s_dataout = c_substitution_table_test_plain(index))

								--          report "decryption error"

								--          severity error;

								--    end loop;

								    report "# Successfully passed all tests";

								    wait;

								  end process testcheckerP;


								  i_cbcdes : cbcdes

								  port map (

								    reset_i  => s_reset,

								    clk_i    => s_clk,

								    start_i  => s_start,

								    mode_i   => s_mode,

								    key_i    => s_key,

								    iv_i     => s_iv,

								    data_i   => s_datain,

								    valid_i  => s_validin,

								    ready_o  => s_ready,

								    data_o   => s_dataout,

								    valid_o  => s_validout

								  );


								end architecture rtl;