Critical Description
We have PDF file which was signed by some other application.
When we try to sign it with PDFbox, previous revision is damaged.
We did some investigations and found such problem:
(question on stackoverflow is here: http://stackoverflow.com/questions/19903884/pdf-document-is-modified-by-another-revision/19905271?noredirect=1#19905271 )
Some PDF tags are changed in new revisions.
For example values of following tags:
/WhitePoint
/Gamma
/Matrix
are changed from values like this: 0.9505
to values like this: 0.9505000114
We think this is problem of converting float/double inside COSFloat.
Following code just opens and saves PDF file and this operation changes values of mentioned text:
public void saveTo(String sourceFile, String destFile) throws Exception{
PDDocument doc = PDDocument.load(new FileInputStream(sourceFile));
doc.save(new FileOutputStream(destFile));
}
