VBA Script in Delphi umsetzen

[DeddyH]

Mal ein Versuch:

Delphi-Quellcode:

function Skr_CRC32(const Data: string): string;
var
  i, lCRC32, iBit: DWORD;
  Crc32Table: array[0..255] of DWORD;
begin
  for i := Low(Crc32Table) to High(Crc32Table) do
    begin
      lCRC32 := i;
      for iBit := 0 to 7 do
        begin
          if lCRC32 and $01 <> 0 then
            lCRC32 := ((lCRC32 and $FFFFFFFE div 2) and $7FFFFFFF) xor $EDB88320
          else
            lCRC32 := (lCRC32 and $FFFFFFFE div 2) and $7FFFFFFF;
        end;
      Crc32Table[i] := lCRC32;
    end;
  lCRC32 := $FFFFFFFF;
  for i := 1 to Length(Data) do
    lCRC32 := ((lCRC32 and $FFFFFF00 div $100) and $00FFFFFF) xor
      Crc32Table[(lCRC32 and $FF) xor Ord(Data[i])];
  Result := Format('%.8x', [lCRC32 xor $FFFFFFFF]);
end;

Ohne Vergleichswerte fällt das Testen allerdings schwer.