Subversion Repositories aes_decrypt_fpga

////////////////////////////////////////////////////////////////// ////

////                                                                                                                            ////

//// AES Decryption Core for FPGA                                                                       ////

////                                                                                                                            ////

//// This file is part of the AES Decryption Core for FPGA project      ////

//// http://www.opencores.org/cores/xxx/                                                        ////

////                                                                                                                            ////

//// Description                                                                                                        ////

//// Implementation of  AES Decryption Core for FPGA according to       ////

//// core specification document.                                                                       ////

////                                                                                                                            ////

//// To Do:                                                                                                             ////

//// -                                                                                                                          ////

////                                                                                                                            ////

//// Author(s):                                                                                                         ////

//// - scheng, schengopencores@opencores.org                                            ////

////                                                                                                                            ////

//////////////////////////////////////////////////////////////////////

////                                                                                                                            ////

//// Copyright (C) 2009 Authors and OPENCORES.ORG                                       ////

////                                                                                                                            ////

//// This source file may be used and distributed without                       ////

//// restriction provided that this copyright statement is not          ////

//// removed from the file and that any derivative work contains        ////

//// the original copyright notice and the associated disclaimer.       ////

////                                                                                                                            ////

//// This source file is free software; you can redistribute it         ////

//// and/or modify it under the terms of the GNU Lesser General         ////

//// Public License as published by the Free Software Foundation;       ////

//// either version 2.1 of the License, or (at your option) any         ////

//// later version.                                                                                             ////

////                                                                                                                            ////

//// This source is distributed in the hope that it will be             ////

//// useful, but WITHOUT ANY WARRANTY; without even the implied         ////

//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR            ////

//// PURPOSE. See the GNU Lesser General Public License for more        ////

//// details.                                                                                                           ////

////                                                                                                                            ////

//// You should have received a copy of the GNU Lesser General          ////

//// Public License along with this source; if not, download it         ////

//// from http://www.opencores.org/lgpl.shtml                                           ////

////                                                                                                                            //// ///

///////////////////////////////////////////////////////////////////

////                                                                                                                            ////

//// This file implements the RotWord() transform in the Key            ////

//// Expansion algorithm in section 5.2 of the FIPS-197 spec.           ////

////                                                                                                                            ////

////////////////////////////////////////////////////////////////////////

module RotWord(

        input   [0:31] din,

        output  [0:31] dout);

        assign dout = {din[8+:8], din[16+:8], din[24+:8], din[0+:8]};

endmodule