Merge branch 'fix-vhdltbc'

1 files changed, 174 insertions, 0 deletions

diff --git a/src/add_vhdltbc/i/i-256/tb/top_tb.vhd b/src/add_vhdltbc/i/i-256/tb/top_tb.vhd
new file mode 100644
index 0000000..d21b4ba
--- /dev/null
+++ b/src/add_vhdltbc/i/i-256/tb/top_tb.vhd
@@ -0,0 +1,174 @@
+-- Implementation of the Lilliput-TBC tweakable block cipher by the
+-- Lilliput-AE team, hereby denoted as "the implementer".
+--
+-- For more information, feedback or questions, refer to our website:
+-- https://paclido.fr/lilliput-ae
+--
+-- To the extent possible under law, the implementer has waived all copyright
+-- and related or neighboring rights to the source code in this file.
+-- http://creativecommons.org/publicdomain/zero/1.0/
+
+library IEEE;
+library work;
+use IEEE.numeric_std.all;
+use IEEE.std_logic_1164.all;
+use work.crypt_pack.all;
+
+
+entity top_tb is
+end top_tb;
+
+architecture top_tb_arch of top_tb is
+
+  function to_hstring (value : STD_LOGIC_VECTOR) return STRING is
+    constant ne     : INTEGER := (value'length+3)/4;
+    variable pad    : STD_LOGIC_VECTOR(0 to (ne*4 - value'length) - 1);
+    variable ivalue : STD_LOGIC_VECTOR(0 to ne*4 - 1);
+    variable result : STRING(1 to ne);
+    variable quad   : STD_LOGIC_VECTOR(0 to 3);
+  begin
+    if value (value'left) = 'Z' then
+      pad := (others => 'Z');
+    else
+      pad := (others => '0');
+    end if;
+    ivalue := pad & value;
+    for i in 0 to ne-1 loop
+      quad := To_X01Z(ivalue(4*i to 4*i+3));
+      case quad is
+        when x"0"   => result(i+1)   := '0';
+        when x"1"   => result(i+1)   := '1';
+        when x"2"   => result(i+1)   := '2';
+        when x"3"   => result(i+1)   := '3';
+        when x"4"   => result(i+1)   := '4';
+        when x"5"   => result(i+1)   := '5';
+        when x"6"   => result(i+1)   := '6';
+        when x"7"   => result(i+1)   := '7';
+        when x"8"   => result(i+1)   := '8';
+        when x"9"   => result(i+1)   := '9';
+        when x"A"   => result(i+1)   := 'A';
+        when x"B"   => result(i+1)   := 'B';
+        when x"C"   => result(i+1)   := 'C';
+        when x"D"   => result(i+1)   := 'D';
+        when x"E"   => result(i+1)   := 'E';
+        when x"F"   => result(i+1)   := 'F';
+        when "ZZZZ" => result(i+1) := 'Z';
+        when others => result(i+1) := 'X';
+      end case;
+    end loop;
+    return result;
+  end function to_hstring;
+
+  component top is port (
+      start_i        : in  std_logic;
+      clock_i        : in  std_logic;
+      reset_i        : in  std_logic;
+      data_i         : in  bit_data;
+      key_i          : in  bit_key;
+      data_o         : out bit_data;
+      tweak_i        : in  bit_tweak;
+      decrypt_i      : in  std_logic;
+      liliput_on_out : out std_logic;
+      valid_o        : out std_logic
+    );
+  end component;
+  type array_data is array(0 to 1) of bit_data;
+  type array_tweak is array(0 to 1) of bit_tweak;
+  type array_key is array(0 to 1) of bit_key;
+  type array_decrypt is array(0 to 1) of std_logic;
+
+  signal data_vect    : array_data;
+  signal key_vect     : array_key;
+  signal tweak_vect   : array_tweak;
+  signal decrypt_vect : array_decrypt;
+  signal res_vect     : array_data;
+
+
+  signal start_i_s, clock_i_s, reset_i_s : std_logic := '0';
+  signal data_i_s                        : bit_data;
+  signal key_i_s                         : bit_key;
+  signal tweak_i_s                       : bit_tweak;
+  signal data_o_s                        : bit_data;
+  signal liliput_on_o_s                  : std_logic;
+  signal decrypt_s                       : std_logic;
+  signal valid_s                         : std_logic;
+
+begin
+  DUT : top
+    port map(
+      start_i        => start_i_s,
+      clock_i        => clock_i_s,
+      reset_i        => reset_i_s,
+      data_i         => data_i_s,
+      key_i          => key_i_s,
+      tweak_i        => tweak_i_s,
+      data_o         => data_o_s,
+      decrypt_i      => decrypt_s,
+      liliput_on_out => liliput_on_o_s,
+      valid_o        => valid_s
+    );
+
+  clock_i_s <= not(clock_i_s) after 100 ns;
+  reset_i_s <= '0' , '1' after 50 ns;
+
+  simulation : process
+
+    procedure check (data : in bit_data;
+        key         : in bit_key;
+        tweak       : in bit_tweak;
+        decrypt     : in std_logic;
+        res_expeted : in bit_data) is
+
+      variable res : bit_data;
+
+    begin
+      data_i_s  <= data;
+      key_i_s   <= key;
+      tweak_i_s <= tweak;
+      decrypt_s <= decrypt;
+      start_i_s <= '1';
+
+      wait until valid_s = '1';
+
+      res := data_o_s;
+      assert res = res_expeted
+        report "Unexpected result: " &
+        "Data = " & to_hstring(data) & "; " &
+        "key = " & to_hstring(key) & "; " &
+        "tweak = " & to_hstring(tweak) & "; " &
+        "decrypt = " & std_logic'image(decrypt) & "; " &
+        "res_expeted = " & to_hstring(res_expeted)& "; "
+        severity error;
+
+      data_i_s  <= (others => '0');
+      key_i_s   <= (others => '0');
+      tweak_i_s <= (others => '0');
+      decrypt_s <= '0';
+      start_i_s <= '0';
+
+      wait for 30 ns;
+
+    end procedure check;
+
+  begin
+    data_vect    <= (X"F0E0D0C0B0A090807060504030201000",X"CB8CFEB1060CC92604F3F6FB09AA389D");
+    key_vect     <= (X"F1E1D1C1B1A191817161514131211101F0E0D0C0B0A090807060504030201000",X"F1E1D1C1B1A191817161514131211101F0E0D0C0B0A090807060504030201000");
+    tweak_vect   <= (X"7161514131211101F0E0D0C0B0A090807060504030201000",X"7161514131211101F0E0D0C0B0A090807060504030201000");
+    decrypt_vect <= ('0','1');
+    res_vect     <= (X"CB8CFEB1060CC92604F3F6FB09AA389D",X"F0E0D0C0B0A090807060504030201000");
+
+    wait for 30 ns;
+
+    check(data_vect(0),key_vect(0),tweak_vect(0),decrypt_vect(0),res_vect(0));
+    check(data_vect(1),key_vect(1),tweak_vect(1),decrypt_vect(1),res_vect(1));
+    wait;
+  end process simulation;
+end architecture top_tb_arch;
+
+configuration top_tb_conf of top_tb is
+  for top_tb_arch
+    for DUT : top
+      use entity work.top(top_arch);
+    end for;
+  end for;
+end configuration top_tb_conf;