[SPAM] Re: Encrypting signed pdf file
mkl <[email protected]>
| Newsgroups | gmane.comp.java.lib.itext.general |
|---|---|
| Message-ID | <[email protected]> |
Metho, metho wrote > Currently we store signed pdf in our database and need to sent encrypted > version over the net, but encrypting it using PDFReader and PdfStamper > seems to break certificates existing(adobe reader says they are not > valid). > Is there some workaround for that? You automatically break existing signatures whenever you encrypt a document. Signatures sign byte ranges in the file, and these file ranges are relocated and also otherwise changed upon encryption. > I also tried to sign those pdfs again during encryption but i end with pdf > with 2 certificates. The new one which is valid and old one which is > broken(maybe there is some way to delete this one?) You can delete the original one completely or you can reuse its visual representation for a new one. Regards, Mikel -- View this message in context: http://itext-general.2136553.n4.nabble.com/Encrypting-signed-pdf-file-tp4660281p4660285.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions iText(R) is a registered trademark of 1T3XT BVBA. Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php