和md5.asp结果一样的Delphi加密代码

var
  k: integer;
  AA, BB, CC, DD, a, b, c, d: longword;
  x: arrlongword;
  s: string;
 
  { functions }

  function md5_F(const x, y, z: longword): longword;
  begin
    Result := (x And y) Or ((Not x) And z);
  end;

  function md5_G(const x, y, z: longword): longword;
  begin
    Result := (x And z) Or (y And (Not z));
  end;

  function md5_H(const x, y, z: longword): longword;
  begin
    Result := (x Xor y Xor z);
  end;

  function md5_I(const x, y, z: longword): longword;
  begin
    Result := (y Xor (x Or (Not z)));
  end;

  procedure md5_FF(var a: longword; const b, c, d, x, s, ac: longword);
  begin
    a := a + md5_F(b, c, d) + x + ac;
    a := RotateLeft(a, s);
    a := a + b;
  end;

  procedure md5_GG(var a: longword; const b, c, d, x, s, ac: longword);
  begin
    a := a + md5_G(b, c, d) + x + ac;
    a := RotateLeft(a, s);
    a := a + b;
  end;

  procedure md5_HH(var a: longword; const b, c, d, x, s, ac: longword);
  begin
    a := a + md5_H(b, c, d) + x + ac;
    a := RotateLeft(a, s);
    a := a + b;
  end;