if (!in.markSupported()) this.in = new BufferedInputStream(in, 16384); else this.in = in; encBuf = new ByteArrayOutputStream(2048);
this(new ByteArrayInputStream(in));
  public DERReader(InputStream in)  {    if (!in.markSupported())      this.in = new BufferedInputStream(in, 16384);    else      this.in = in;    encBuf = new ByteArrayOutputStream(2048);  }