cryptography ip-cores in vhdl / verilog
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-- ======================================================================
-- 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
-- ======================================================================
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
entity tb_cbctdes is
end entity tb_cbctdes;
architecture rtl of tb_cbctdes is
type t_array is array (natural range <>) of std_logic_vector(0 to 63);
constant c_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");
signal s_tdes_answers : t_array(0 to 19);
signal s_reset : std_logic := '0';
signal s_clk : std_logic := '0';
signal s_mode : std_logic := '0';
signal s_start : std_logic := '0';
signal s_iv : std_logic_vector(0 to 63) := (others => '0');
signal s_key1 : std_logic_vector(0 to 63) := (others => '0');
signal s_key2 : std_logic_vector(0 to 63) := (others => '0');
signal s_key3 : 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 := '0';
component cbctdes 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);
key1_i : in std_logic_vector(0 to 63);
key2_i : in std_logic_vector(0 TO 63);
key3_i : in std_logic_vector(0 TO 63);
data_i : in std_logic_vector(0 TO 63);
valid_i : in std_logic;
data_o : out std_logic_vector(0 TO 63);
valid_o : out std_logic;
ready_o : out std_logic
);
end component cbctdes;
begin
s_reset <= '1' after 100 ns;
s_clk <= not(s_clk) after 10 ns;
teststimuliP : process is
begin
s_start <= '0';
s_mode <= '0';
s_validin <= '0';
s_iv <= (others => '0');
s_key1 <= (others => '0');
s_key2 <= (others => '0');
s_key3 <= (others => '0');
s_datain <= (others => '0');
wait until s_reset = '1';
-- ENCRYPTION TESTS
-- cbc known answers test
for index in c_table_test_plain'range loop
wait until rising_edge(s_clk) and s_ready = '1';
s_key1 <= x"1111111111111111";
s_key2 <= x"5555555555555555";
s_key3 <= x"9999999999999999";
s_validin <= '1';
s_datain <= c_table_test_plain(index);
if(index = 0) then
s_start <= '1';
end if;
wait until rising_edge(s_clk);
s_validin <= '0';
s_start <= '0';
end loop;
wait until rising_edge(s_clk);
s_mode <= '0';
s_start <= '0';
s_validin <= '0';
s_key1 <= (others => '0');
s_key2 <= (others => '0');
s_key3 <= (others => '0');
s_datain <= (others => '0');
wait for 1 us;
-- DECRYPTION TESTS
-- cbc known answer test
for index in c_table_test_plain'range loop
wait until rising_edge(s_clk) and s_ready = '1';
s_key1 <= x"1111111111111111";
s_key2 <= x"5555555555555555";
s_key3 <= x"9999999999999999";
s_mode <= '1';
s_validin <= '1';
s_datain <= s_tdes_answers(index);
if(index = 0) then
s_start <= '1';
end if;
wait until rising_edge(s_clk);
s_start <= '0';
s_validin <= '0';
s_mode <= '0';
end loop;
wait until rising_edge(s_clk);
s_mode <= '0';
s_start <= '0';
s_validin <= '0';
s_key1 <= (others => '0');
s_key2 <= (others => '0');
s_key3 <= (others => '0');
s_datain <= (others => '0');
wait;
end process teststimuliP;
testcheckerP : process is
begin
report "# ENCRYPTION TESTS";
for index in c_table_test_plain'range loop
wait until rising_edge(s_clk) and s_validout = '1';
s_tdes_answers(index) <= s_dataout;
end loop;
report "# DECRYPTION TESTS";
report "# tdes known answer test";
for index in c_table_test_plain'range loop
wait until rising_edge(s_clk) and s_validout = '1';
assert (s_dataout = c_table_test_plain(index))
report "decryption error"
severity error;
end loop;
report "# Successfully passed all tests";
wait;
end process testcheckerP;
i_cbctdes : cbctdes
port map (
reset_i => s_reset,
clk_i => s_clk,
start_i => s_start,
mode_i => s_mode,
iv_i => s_iv,
key1_i => s_key1,
key2_i => s_key2,
key3_i => s_key3,
data_i => s_datain,
valid_i => s_validin,
data_o => s_dataout,
valid_o => s_validout,
ready_o => s_ready
);
end architecture rtl;