P.v

module P(input [1:32] in, output [1:32] out);
  assign out[1] = in[16];
  assign out[2] = in[7];
  assign out[3] = in[20];
  assign out[4] = in[21];
  assign out[5] = in[29];
  assign out[6] = in[12];
  assign out[7] = in[28];
  assign out[8] = in[17];
  assign out[9] = in[1];
  assign out[10] = in[15];
  assign out[11] = in[23];
  assign out[12] = in[26];
  assign out[13] = in[5];
  assign out[14] = in[18];
  assign out[15] = in[31];
  assign out[16] = in[10];
  assign out[17] = in[2];
  assign out[18] = in[8];
  assign out[19] = in[24];
  assign out[20] = in[14];
  assign out[21] = in[32];
  assign out[22] = in[27];
  assign out[23] = in[3];
  assign out[24] = in[9];
  assign out[25] = in[19];
  assign out[26] = in[13];
  assign out[27] = in[30];
  assign out[28] = in[6];
  assign out[29] = in[22];
  assign out[30] = in[11];
  assign out[31] = in[4];
  assign out[32] = in[25];
endmodule