Hello!
I have an encrypted PDF File that was generated with OpenOffice and there
included encryption-sets.
Then I would like to modify this "exists" and "encrypted" pdf with iText.
I wrote a small java program that stamped an "OverText" to all included
pages. But if I do so, I lost the encryption settings from OpenOffice
for this PDF. How can I fix this? I don't want to lose the openoffice -
encryption settings...
Can anybody help me?
Here is my small code example...
...
...
System.out.println("Add watermark(s) now!");
try {
// we create a reader for a certain document
String ownerPW = "PW";
PdfReader reader = new PdfReader("infile-raw.pdf",
ownerPW.getBytes()); //this is the original pdf - infile that is encrypted with
openoffice
int n = reader.getNumberOfPages();
// we create a stamper that will copy the document to a new file
PdfStamper stamp = new PdfStamper(reader, new
FileOutputStream("infile-sec.pdf"));
// adding content to each page
int i = 0;
PdfContentByte over_txt;
BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA,
BaseFont.WINANSI, BaseFont.EMBEDDED);
while (i < n) {
i++;
PdfReader reader_pagesize = stamp.getReader();
float PageSizeHeight =
reader_pagesize.getPageSize(i).getHeight() / 2;
float PageSizeWidth = reader_pagesize.getPageSize(i).getWidth()
/ 2;
// demo text over the existing page
over_txt = stamp.getOverContent(i);
over_txt.beginText();
over_txt.setFontAndSize(bf, 48);
over_txt.setRGBColorFill(255,0,0);
over_txt.showTextAligned(Element.ALIGN_CENTER,"DEMOMODE",
PageSizeWidth, PageSizeHeight, 45);
over_txt.endText();
}
// closing PdfStamper will generate the new PDF file
stamp.close();
}
catch (Exception de) {
de.printStackTrace();
}
...
...
infile-sec.pdf is the new stamped pdf, but if I open it I lost all encryption
informations...
Thanks for help!
Regards,
T. Hodes
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