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entactogen |
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-- Copyright (c) 2013 Antonio de la Piedra
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-- This program is free software: you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation, either version 3 of the License, or
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-- (at your option) any later version.
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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-- You should have received a copy of the GNU General Public License
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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library IEEE;
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use IEEE.STD_LOGIC_1164.ALL;
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entity round_f is
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port(clk : in std_logic;
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enc : in std_logic;
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rc_in : in std_logic_vector(31 downto 0);
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a_0_in : in std_logic_vector(31 downto 0);
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a_1_in : in std_logic_vector(31 downto 0);
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a_2_in : in std_logic_vector(31 downto 0);
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a_3_in : in std_logic_vector(31 downto 0);
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k_0_in : in std_logic_vector(31 downto 0);
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k_1_in : in std_logic_vector(31 downto 0);
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k_2_in : in std_logic_vector(31 downto 0);
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k_3_in : in std_logic_vector(31 downto 0);
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a_0_out : out std_logic_vector(31 downto 0);
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a_1_out : out std_logic_vector(31 downto 0);
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a_2_out : out std_logic_vector(31 downto 0);
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a_3_out : out std_logic_vector(31 downto 0));
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end round_f;
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architecture Behavioral of round_f is
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signal a_0_in_s : std_logic_vector(31 downto 0);
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signal theta_0_s : std_logic_vector(31 downto 0);
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signal theta_1_s : std_logic_vector(31 downto 0);
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signal theta_2_s : std_logic_vector(31 downto 0);
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signal theta_3_s : std_logic_vector(31 downto 0);
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signal pi_1_1_s : std_logic_vector(31 downto 0);
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signal pi_1_2_s : std_logic_vector(31 downto 0);
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signal pi_1_3_s : std_logic_vector(31 downto 0);
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signal gamma_0_s : std_logic_vector(31 downto 0);
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signal gamma_1_s : std_logic_vector(31 downto 0);
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signal gamma_2_s : std_logic_vector(31 downto 0);
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signal gamma_3_s : std_logic_vector(31 downto 0);
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signal pi_2_1_s : std_logic_vector(31 downto 0);
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signal pi_2_2_s : std_logic_vector(31 downto 0);
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signal pi_2_3_s : std_logic_vector(31 downto 0);
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component theta is
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port(clk : in std_logic;
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a_0_in : in std_logic_vector(31 downto 0);
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a_1_in : in std_logic_vector(31 downto 0);
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a_2_in : in std_logic_vector(31 downto 0);
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a_3_in : in std_logic_vector(31 downto 0);
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k_0_in : in std_logic_vector(31 downto 0);
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k_1_in : in std_logic_vector(31 downto 0);
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k_2_in : in std_logic_vector(31 downto 0);
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k_3_in : in std_logic_vector(31 downto 0);
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a_0_out : out std_logic_vector(31 downto 0);
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a_1_out : out std_logic_vector(31 downto 0);
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a_2_out : out std_logic_vector(31 downto 0);
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a_3_out : out std_logic_vector(31 downto 0));
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end component;
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component pi_1 is
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port(a_1_in : in std_logic_vector(31 downto 0);
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a_2_in : in std_logic_vector(31 downto 0);
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a_3_in : in std_logic_vector(31 downto 0);
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a_1_out : out std_logic_vector(31 downto 0);
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a_2_out : out std_logic_vector(31 downto 0);
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a_3_out : out std_logic_vector(31 downto 0));
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end component;
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component gamma is
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port(clk : in std_logic;
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a_0_in : in std_logic_vector(31 downto 0);
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a_1_in : in std_logic_vector(31 downto 0);
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a_2_in : in std_logic_vector(31 downto 0);
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a_3_in : in std_logic_vector(31 downto 0);
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a_0_out : out std_logic_vector(31 downto 0);
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a_1_out : out std_logic_vector(31 downto 0);
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a_2_out : out std_logic_vector(31 downto 0);
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a_3_out : out std_logic_vector(31 downto 0));
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end component;
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component pi_2 is
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port(a_1_in : in std_logic_vector(31 downto 0);
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a_2_in : in std_logic_vector(31 downto 0);
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a_3_in : in std_logic_vector(31 downto 0);
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a_1_out : out std_logic_vector(31 downto 0);
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a_2_out : out std_logic_vector(31 downto 0);
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a_3_out : out std_logic_vector(31 downto 0));
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end component;
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signal a_0_aux_s : std_logic_vector(31 downto 0);
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begin
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a_0_in_s <= (a_0_in xor rc_in) when enc = '0' else a_0_in;
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THETA_0 : theta port map (clk,
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a_0_in_s,
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a_1_in,
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a_2_in,
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a_3_in,
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k_0_in,
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k_1_in,
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k_2_in,
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k_3_in,
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theta_0_s,
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theta_1_s,
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theta_2_s,
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theta_3_s);
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a_0_aux_s <= (theta_0_s xor rc_in) when enc = '1' else theta_0_s;
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PI_1_0 : pi_1 port map (theta_1_s,
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theta_2_s,
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theta_3_s,
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pi_1_1_s,
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pi_1_2_s,
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pi_1_3_s);
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GAMMA_0 : gamma port map (clk,
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a_0_aux_s,
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pi_1_1_s,
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pi_1_2_s,
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pi_1_3_s,
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gamma_0_s,
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gamma_1_s,
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gamma_2_s,
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gamma_3_s);
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PI_2_0 : pi_2 port map (gamma_1_s,
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gamma_2_s,
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gamma_3_s,
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pi_2_1_s,
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pi_2_2_s,
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pi_2_3_s);
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a_0_out <= gamma_0_s;
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a_1_out <= pi_2_1_s;
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a_2_out <= pi_2_2_s;
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a_3_out <= pi_2_3_s;
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end Behavioral;
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