PHPExcel Download Protected Book

I have 35 protected books. I am using PHPExcel to extract information from related excel files. Unfortunately, PHPExcel was not able to download the file I suspect because of a protected workbook. Here is my code:

$inputFileType = PHPExcel_IOFactory::identify($inputFileName);
$objReader = PHPExcel_IOFactory::createReader($inputFileType);
$objReader->setReadDataOnly(true);
$objPHPExcel = $objReader->load($inputFileName);

Is there any workaround that allows PHPExcel to extract information from a protected workbook?

Thanks in advance.