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[/] [present/] [trunk/] [Pure/] [rtl/] [vhdl/] [pLayer.vhd] - Blame information for rev 4

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1 4 gajos
-----------------------------------------------------------------------
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----                                                               ----
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---- Present - a lightweight block cipher project                  ----
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----                                                               ----
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---- This file is part of the Present - a lightweight block        ----
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---- cipher project                                                ----
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---- http://www.http://opencores.org/project,present               ----
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----                                                               ----
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---- Description:                                                  ----
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----     Permutation layer of Present cipher. Simple signal mixing.----
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---- For more information see                                      ----
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---- http://homes.esat.kuleuven.be/~abogdano/papers/               ----
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---- present_ches07.pdf                                            ----
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---- To Do:                                                        ----
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----                                                               ----
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---- Author(s):                                                    ----
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---- - Krzysztof Gajewski, gajos@opencores.org                     ----
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----                       k.gajewski@gmail.com                    ----
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----                                                               ----
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-----------------------------------------------------------------------
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----                                                               ----
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---- Copyright (C) 2013 Authors and OPENCORES.ORG                  ----
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----                                                               ----
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---- This source file may be used and distributed without          ----
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---- restriction provided that this copyright statement is not     ----
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---- removed from the file and that any derivative work contains   ----
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---- the original copyright notice and the associated disclaimer.  ----
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----                                                               ----
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---- This source file is free software; you can redistribute it    ----
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---- and-or modify it under the terms of the GNU Lesser General    ----
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---- Public License as published by the Free Software Foundation;  ----
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---- either version 2.1 of the License, or (at your option) any    ----
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---- later version.                                                ----
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----                                                               ----
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---- This source is distributed in the hope that it will be        ----
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---- useful, but WITHOUT ANY WARRANTY; without even the implied    ----
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---- warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR       ----
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---- PURPOSE. See the GNU Lesser General Public License for more   ----
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---- details.                                                      ----
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----                                                               ----
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---- You should have received a copy of the GNU Lesser General     ----
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---- Public License along with this source; if not, download it    ----
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---- from http://www.opencores.org/lgpl.shtml                      ----
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----                                                               ----
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-----------------------------------------------------------------------
46 3 gajos
library IEEE;
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use IEEE.STD_LOGIC_1164.ALL;
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use IEEE.STD_LOGIC_ARITH.ALL;
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use IEEE.STD_LOGIC_UNSIGNED.ALL;
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entity pLayer is
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        generic(w_64 : integer := 64);
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        port (
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                input : in std_logic_vector(w_64-1 downto 0);
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                output : out std_logic_vector(w_64-1 downto 0)
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        );
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end pLayer;
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architecture Behavioral of pLayer is
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begin
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                        output(0) <= input(0);
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                        output(16) <= input(1);
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                        output(32) <= input(2);
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                        output(48) <= input(3);
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                        output(1) <= input(4);
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                        output(17) <= input(5);
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                        output(33) <= input(6);
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                        output(49) <= input(7);
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                        output(2) <= input(8);
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                        output(18) <= input(9);
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                        output(34) <= input(10);
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                        output(50) <= input(11);
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                        output(3) <= input(12);
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                        output(19) <= input(13);
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                        output(35) <= input(14);
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                        output(51) <= input(15);
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                        output(4) <= input(16);
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                        output(20) <= input(17);
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                        output(36) <= input(18);
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                        output(52) <= input(19);
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                        output(5) <= input(20);
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                        output(21) <= input(21);
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                        output(37) <= input(22);
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                        output(53) <= input(23);
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                        output(6) <= input(24);
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                        output(22) <= input(25);
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                        output(38) <= input(26);
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                        output(54) <= input(27);
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                        output(7) <= input(28);
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                        output(23) <= input(29);
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                        output(39) <= input(30);
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                        output(55) <= input(31);
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                        output(8) <= input(32);
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                        output(24) <= input(33);
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                        output(40) <= input(34);
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                        output(56) <= input(35);
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                        output(9) <= input(36);
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                        output(25) <= input(37);
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                        output(41) <= input(38);
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                        output(57) <= input(39);
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                        output(10) <= input(40);
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                        output(26) <= input(41);
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                        output(42) <= input(42);
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                        output(58) <= input(43);
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                        output(11) <= input(44);
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                        output(27) <= input(45);
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                        output(43) <= input(46);
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                        output(59) <= input(47);
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                        output(12) <= input(48);
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                        output(28) <= input(49);
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                        output(44) <= input(50);
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                        output(60) <= input(51);
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                        output(13) <= input(52);
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                        output(29) <= input(53);
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                        output(45) <= input(54);
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                        output(61) <= input(55);
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                        output(14) <= input(56);
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                        output(30) <= input(57);
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                        output(46) <= input(58);
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                        output(62) <= input(59);
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                        output(15) <= input(60);
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                        output(31) <= input(61);
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                        output(47) <= input(62);
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                        output(63) <= input(63);
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end Behavioral;

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