| 1 |
2 |
arif_endro |
-- ------------------------------------------------------------------------
|
| 2 |
|
|
-- Copyright (C) 2010 Arif Endro Nugroho
|
| 3 |
|
|
-- All rights reserved.
|
| 4 |
|
|
--
|
| 5 |
|
|
-- Redistribution and use in source and binary forms, with or without
|
| 6 |
|
|
-- modification, are permitted provided that the following conditions
|
| 7 |
|
|
-- are met:
|
| 8 |
|
|
--
|
| 9 |
|
|
-- 1. Redistributions of source code must retain the above copyright
|
| 10 |
|
|
-- notice, this list of conditions and the following disclaimer.
|
| 11 |
|
|
-- 2. Redistributions in binary form must reproduce the above copyright
|
| 12 |
|
|
-- notice, this list of conditions and the following disclaimer in the
|
| 13 |
|
|
-- documentation and/or other materials provided with the distribution.
|
| 14 |
|
|
--
|
| 15 |
|
|
-- THIS SOFTWARE IS PROVIDED BY ARIF ENDRO NUGROHO "AS IS" AND ANY EXPRESS
|
| 16 |
|
|
-- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
| 17 |
|
|
-- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
| 18 |
|
|
-- DISCLAIMED. IN NO EVENT SHALL ARIF ENDRO NUGROHO BE LIABLE FOR ANY
|
| 19 |
|
|
-- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
| 20 |
|
|
-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
| 21 |
|
|
-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
| 22 |
|
|
-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
| 23 |
|
|
-- STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
| 24 |
|
|
-- ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
| 25 |
|
|
-- POSSIBILITY OF SUCH DAMAGE.
|
| 26 |
|
|
--
|
| 27 |
|
|
-- End Of License.
|
| 28 |
|
|
-- ------------------------------------------------------------------------
|
| 29 |
|
|
|
| 30 |
|
|
library ieee;
|
| 31 |
|
|
use ieee.std_logic_1164.all;
|
| 32 |
|
|
use ieee.std_logic_unsigned.all;
|
| 33 |
|
|
|
| 34 |
|
|
entity sbox is
|
| 35 |
|
|
port (
|
| 36 |
|
|
x7 : in bit_vector ( 6 downto 0);
|
| 37 |
|
|
x9 : in bit_vector ( 8 downto 0);
|
| 38 |
|
|
y7 : out bit_vector ( 6 downto 0);
|
| 39 |
|
|
y9 : out bit_vector ( 8 downto 0)
|
| 40 |
|
|
);
|
| 41 |
|
|
end sbox;
|
| 42 |
|
|
|
| 43 |
|
|
architecture phy of sbox is
|
| 44 |
|
|
begin
|
| 45 |
|
|
--S7
|
| 46 |
|
|
y7(0) <= (x7(1) and x7(3)) xor x7(4) xor (x7(0) and x7(1) and x7(4)) xor x7(5) xor
|
| 47 |
|
|
(x7(2) and x7(5)) xor
|
| 48 |
|
|
(x7(3) and x7(4) and x7(5)) xor x7(6) xor (x7(0) and x7(6)) xor (x7(1) and x7(6)) xor
|
| 49 |
|
|
(x7(3) and x7(6)) xor (x7(2) and x7(4) and x7(6)) xor (x7(1) and x7(5) and x7(6)) xor (x7(4) and x7(5) and x7(6));
|
| 50 |
|
|
y7(1) <= (x7(0) and x7(1)) xor (x7(0) and x7(4)) xor (x7(2) and x7(4)) xor x7(5) xor
|
| 51 |
|
|
(x7(1) and x7(2) and x7(5)) xor (x7(0) and x7(3) and x7(5)) xor x7(6) xor (x7(0) and x7(2) and x7(6)) xor
|
| 52 |
|
|
(x7(3) and x7(6)) xor (x7(4) and x7(5) and x7(6)) xor '1';
|
| 53 |
|
|
y7(2) <= x7(0) xor (x7(0) and x7(3)) xor (x7(2) and x7(3)) xor (x7(1) and x7(2) and x7(4)) xor
|
| 54 |
|
|
(x7(0) and x7(3) and x7(4)) xor (x7(1) and x7(5)) xor (x7(0) and x7(2) and x7(5)) xor (x7(0) and x7(6)) xor
|
| 55 |
|
|
(x7(0) and x7(1) and x7(6)) xor (x7(2) and x7(6)) xor (x7(4) and x7(6)) xor '1';
|
| 56 |
|
|
y7(3) <= x7(1) xor (x7(0) and x7(1) and x7(2)) xor (x7(1) and x7(4)) xor
|
| 57 |
|
|
(x7(3) and x7(4)) xor (x7(0) and x7(5)) xor (x7(0) and x7(1) and x7(5)) xor (x7(2) and x7(3) and x7(5)) xor
|
| 58 |
|
|
(x7(1) and x7(4) and x7(5)) xor (x7(2) and x7(6)) xor (x7(1) and x7(3) and x7(6));
|
| 59 |
|
|
y7(4) <= (x7(0) and x7(2)) xor x7(3) xor (x7(1) and x7(3)) xor (x7(1) and x7(4)) xor
|
| 60 |
|
|
(x7(0) and x7(1) and x7(4)) xor (x7(2) and x7(3) and x7(4)) xor (x7(0) and x7(5)) xor (x7(1) and x7(3) and x7(5)) xor
|
| 61 |
|
|
(x7(0) and x7(4) and x7(5)) xor (x7(1) and x7(6)) xor (x7(3) and x7(6)) xor (x7(0) and x7(3) and x7(6)) xor
|
| 62 |
|
|
(x7(5) and x7(6)) xor '1';
|
| 63 |
|
|
y7(5) <= x7(2) xor (x7(0) and x7(2)) xor (x7(0) and x7(3)) xor (x7(1) and x7(2) and x7(3)) xor
|
| 64 |
|
|
(x7(0) and x7(2) and x7(4)) xor (x7(0) and x7(5)) xor (x7(2) and x7(5)) xor (x7(4) and x7(5)) xor
|
| 65 |
|
|
(x7(1) and x7(6)) xor (x7(1) and x7(2) and x7(6)) xor (x7(0) and x7(3) and x7(6)) xor (x7(3) and x7(4) and x7(6)) xor
|
| 66 |
|
|
(x7(2) and x7(5) and x7(6)) xor '1';
|
| 67 |
|
|
y7(6) <= (x7(1) and x7(2)) xor (x7(0) and x7(1) and x7(3)) xor (x7(0) and x7(4)) xor (x7(1) and x7(5)) xor
|
| 68 |
|
|
(x7(3) and x7(5)) xor x7(6) xor (x7(0) and x7(1) and x7(6)) xor (x7(2) and x7(3) and x7(6)) xor
|
| 69 |
|
|
(x7(1) and x7(4) and x7(6)) xor (x7(0) and x7(5) and x7(6));
|
| 70 |
|
|
--S7
|
| 71 |
|
|
--S9
|
| 72 |
|
|
y9(0) <= (x9(0) and x9(2)) xor x9(3) xor (x9(2) and x9(5)) xor (x9(5) and x9(6)) xor
|
| 73 |
|
|
(x9(0) and x9(7)) xor (x9(1) and x9(7)) xor (x9(2) and x9(7)) xor (x9(4) and x9(8)) xor
|
| 74 |
|
|
(x9(5) and x9(8)) xor (x9(7) and x9(8)) xor '1';
|
| 75 |
|
|
y9(1) <= x9(1) xor (x9(0) and x9(1)) xor (x9(2) and x9(3)) xor (x9(0) and x9(4)) xor
|
| 76 |
|
|
(x9(1) and x9(4)) xor (x9(0) and x9(5)) xor (x9(3) and x9(5)) xor x9(6) xor
|
| 77 |
|
|
(x9(1) and x9(7)) xor (x9(2) and x9(7)) xor (x9(5) and x9(8)) xor '1';
|
| 78 |
|
|
y9(2) <= x9(1) xor (x9(0) and x9(3)) xor (x9(3) and x9(4)) xor (x9(0) and x9(5)) xor
|
| 79 |
|
|
(x9(2) and x9(6)) xor (x9(3) and x9(6)) xor (x9(5) and x9(6)) xor (x9(4) and x9(7)) xor
|
| 80 |
|
|
(x9(5) and x9(7)) xor (x9(6) and x9(7)) xor x9(8) xor (x9(0) and x9(8)) xor
|
| 81 |
|
|
'1';
|
| 82 |
|
|
y9(3) <= x9(0) xor (x9(1) and x9(2)) xor (x9(0) and x9(3)) xor (x9(2) and x9(4)) xor
|
| 83 |
|
|
x9(5) xor (x9(0) and x9(6)) xor (x9(1) and x9(6)) xor (x9(4) and x9(7)) xor
|
| 84 |
|
|
(x9(0) and x9(8)) xor (x9(1) and x9(8)) xor (x9(7) and x9(8));
|
| 85 |
|
|
y9(4) <= (x9(0) and x9(1)) xor (x9(1) and x9(3)) xor x9(4) xor (x9(0) and x9(5)) xor
|
| 86 |
|
|
(x9(3) and x9(6)) xor (x9(0) and x9(7)) xor (x9(6) and x9(7)) xor (x9(1) and x9(8)) xor
|
| 87 |
|
|
(x9(2) and x9(8)) xor (x9(3) and x9(8));
|
| 88 |
|
|
y9(5) <= x9(2) xor (x9(1) and x9(4)) xor (x9(4) and x9(5)) xor (x9(0) and x9(6)) xor
|
| 89 |
|
|
(x9(1) and x9(6)) xor (x9(3) and x9(7)) xor (x9(4) and x9(7)) xor (x9(6) and x9(7)) xor
|
| 90 |
|
|
(x9(5) and x9(8)) xor (x9(6) and x9(8)) xor (x9(7) and x9(8)) xor '1';
|
| 91 |
|
|
y9(6) <= x9(0) xor (x9(2) and x9(3)) xor (x9(1) and x9(5)) xor (x9(2) and x9(5)) xor
|
| 92 |
|
|
(x9(4) and x9(5)) xor (x9(3) and x9(6)) xor (x9(4) and x9(6)) xor (x9(5) and x9(6)) xor
|
| 93 |
|
|
x9(7) xor (x9(1) and x9(8)) xor (x9(3) and x9(8)) xor (x9(5) and x9(8)) xor
|
| 94 |
|
|
(x9(7) and x9(8));
|
| 95 |
|
|
y9(7) <= (x9(0) and x9(1)) xor (x9(0) and x9(2)) xor (x9(1) and x9(2)) xor x9(3) xor
|
| 96 |
|
|
(x9(0) and x9(3)) xor (x9(2) and x9(3)) xor (x9(4) and x9(5)) xor (x9(2) and x9(6)) xor
|
| 97 |
|
|
(x9(3) and x9(6)) xor (x9(2) and x9(7)) xor (x9(5) and x9(7)) xor x9(8) xor
|
| 98 |
|
|
'1';
|
| 99 |
|
|
y9(8) <= (x9(0) and x9(1)) xor x9(2) xor (x9(1) and x9(2)) xor (x9(3) and x9(4)) xor
|
| 100 |
|
|
(x9(1) and x9(5)) xor (x9(2) and x9(5)) xor (x9(1) and x9(6)) xor (x9(4) and x9(6)) xor
|
| 101 |
|
|
x9(7) xor (x9(2) and x9(8)) xor (x9(3) and x9(8));
|
| 102 |
|
|
--S9
|
| 103 |
|
|
end phy;
|
