hw/ip/aes/rtl/aes_sub_bytes.sv

// Copyright lowRISC contributors.
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0
//
// AES SubBytes

module aes_sub_bytes import aes_pkg::*;
#(
  parameter sbox_impl_e SBoxImpl = SBoxImplLut
) (
  input  ciph_op_e             op_i,
  input  logic [3:0][3:0][7:0] data_i,
  input  logic [3:0][3:0][7:0] in_mask_i,
  input  logic [3:0][3:0][7:0] out_mask_i,
  output logic [3:0][3:0][7:0] data_o
);

  // Individually substitute bytes
  for (genvar j = 0; j < 4; j++) begin : gen_sbox_j
    for (genvar i = 0; i < 4; i++) begin : gen_sbox_i
      aes_sbox #(
        .SBoxImpl ( SBoxImpl )
      ) u_aes_sbox_ij (
        .op_i       ( op_i             ),
        .data_i     ( data_i[i][j]     ),
        .in_mask_i  ( in_mask_i[i][j]  ),
        .out_mask_i ( out_mask_i[i][j] ),
        .data_o     ( data_o[i][j]     )
      );
    end
  end

endmodule