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Diffstat (limited to 'tests/iwls2005/systemcaes/byte_mixcolum.v')
| -rw-r--r-- | tests/iwls2005/systemcaes/byte_mixcolum.v | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/tests/iwls2005/systemcaes/byte_mixcolum.v b/tests/iwls2005/systemcaes/byte_mixcolum.v new file mode 100644 index 000000000..b248cc400 --- /dev/null +++ b/tests/iwls2005/systemcaes/byte_mixcolum.v @@ -0,0 +1,92 @@ +////////////////////////////////////////////////////////////////////// +//// //// +//// Mixcolumns for 8 bit //// +//// //// +//// This file is part of the SystemC AES //// +//// //// +//// Description: //// +//// Mixcolum for a byte //// +//// //// +//// Generated automatically using SystemC to Verilog translator //// +//// //// +//// To Do: //// +//// - done //// +//// //// +//// Author(s): //// +//// - Javier Castillo, jcastilo@opencores.org //// +//// //// +////////////////////////////////////////////////////////////////////// +//// //// +//// Copyright (C) 2000 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 //// +//// //// +////////////////////////////////////////////////////////////////////// +// +// CVS Revision History +// +// $Log: byte_mixcolum.v,v $ +// Revision 1.1.1.1 2004/07/05 09:46:23 jcastillo +// First import +// + +module byte_mixcolum(a,b,c,d,outx,outy); + +input [7:0] a,b,c,d; +output [7:0] outx, outy; + +reg [7:0] outx, outy; + +function [7:0] xtime; +input [7:0] in; +reg [3:0] xtime_t; + +begin +xtime[7:5] = in[6:4]; +xtime_t[3] = in[7]; +xtime_t[2] = in[7]; +xtime_t[1] = 0; +xtime_t[0] = in[7]; +xtime[4:1] =xtime_t^in[3:0]; +xtime[0] = in[7]; +end +endfunction + +reg [7:0] w1,w2,w3,w4,w5,w6,w7,w8,outx_var; +always @ (a, b, c, d) +begin +w1 = a ^b; +w2 = a ^c; +w3 = c ^d; +w4 = xtime(w1); +w5 = xtime(w3); +w6 = w2 ^w4 ^w5; +w7 = xtime(w6); +w8 = xtime(w7); + +outx_var = b^w3^w4; +outx=outx_var; +outy=w8^outx_var; + +end + +endmodule |