-- 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.STD_LOGIC_1164.ALL;
use work.const_pack.ALL;

package crypt_pack is

    subtype bit2 is std_logic_vector(1 downto 0);
    subtype bit4 is std_logic_vector(3 downto 0);
    subtype bit8 is std_logic_vector(7 downto 0);
    subtype bit16 is std_logic_vector(15 downto 0);
    subtype bit32 is std_logic_vector(31 downto 0);
    subtype bit64 is std_logic_vector(63 downto 0);
    subtype bit128 is std_logic_vector(127 downto 0);
    subtype bit256 is std_logic_vector(255 downto 0);
    subtype bit192 is std_logic_vector(191 downto 0);
    subtype bit80 is std_logic_vector(79 downto 0);
    subtype bit_tweak is std_logic_vector(TWEAK_LEN-1 downto 0);
    subtype bit_key is std_logic_vector(KEY_LEN-1 downto 0);
    subtype bit_tweak_key is std_logic_vector((TWEAK_LEN+KEY_LEN)-1 downto 0);
    subtype bit_data is std_logic_vector((TWEAK_LEN+KEY_LEN)-1 downto 0);

    type row_state is array(0 to 3) of bit8;
    type type_state is array(0 to 3) of row_state;
    
    type key_row_state is array(0 to 3) of bit8; --nombre d'element par ligne
    type type_key is array(0 to 1) of key_row_state; --nombre de ligne  
    
    type type_tweak_key_row is array(0 to 7) of bit8;  
    type type_tweak_key_array is array(0 to ((TWEAK_LEN+KEY_LEN)/64)-1) of type_tweak_key_row;
    
    type keyschedule_row_state is array(0 to 3) of bit8; -- to 4 pour une matrice bit4
    type type_keyschedule is array(0 to 3) of keyschedule_row_state;      
    
    constant ROUND : integer;
    constant TWEAK_KEY_LEN : integer;
    constant LANE_NB : integer;
    
   
end crypt_pack;        
    
package body crypt_pack is 
    constant ROUND : integer := ROUND_NB-2;
    constant TWEAK_KEY_LEN : integer := TWEAK_LEN+KEY_LEN-1;
    constant LANE_NB : integer := ((TWEAK_LEN+KEY_LEN)/64);
end crypt_pack;