Subversion Repositories avs_aes

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-- This file is part of the project  avs_aes

-- see: http://opencores.org/project,avs_aes

--

-- description: (THIS IS ONLY THE ENTITY FOR THE SHIFTROW COMPONENTS) 

-- Shift Row rotates the Rows of the AES Block

-- This module takes the whole Rijdael state as input, extracts the rows,

-- shifts them and rebuilts the state.

--

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--

-- Author(s):

--         Thomas Ruschival -- ruschi@opencores.org (www.ruschival.de)

--

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-- Copyright (c) 2009, Authors and opencores.org

-- All rights reserved.

--

-- Redistribution and use in source and binary forms, with or without modification,

-- are permitted provided that the following conditions are met:

--    * Redistributions of source code must retain the above copyright notice,

--    this list of conditions and the following disclaimer.

--    * Redistributions in binary form must reproduce the above copyright notice,

--    this list of conditions and the following disclaimer in the documentation

--    and/or other materials provided with the distribution.

--    * Neither the name of the organization nor the names of its contributors

--    may be used to endorse or promote products derived from this software without

--    specific prior written permission.

-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

-- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,

-- OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

-- THE POSSIBILITY OF SUCH DAMAGE

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-- version management:

-- $Author::                                         $

-- $Date::                                           $

-- $Revision::                                       $

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library IEEE;

use IEEE.numeric_std.all;

use IEEE.std_logic_1164.all;

library avs_aes_lib;

use avs_aes_lib.avs_aes_pkg.all;

entity Shiftrow is

        port (

                state_in  : in  STATE;                  -- Raw input data to be shifted

                state_out : out STATE                   -- shifted result

                );

end entity Shiftrow;