Hi, I'm using iText 5.0.3 to encrypt an existing PDF (of size 10mb) using the
PDFStamper.setEncryption() method but it takes more than 100mb of of memory.
Basically I want the document permission to be set to PRINT only.
Normally I use the RandomAccessFileOrArray for the PdfReader and PDFStamper
with append = true to modify PDF contents so that it takes less memory. But
in the case of encryption I can't use append=true and hence I'm forced to
not use RandomAccessFileOrArray for my PdfReader.
Because if I use append=false and RandomAccessFileOrArray for PdfReader then
it takes more than 5 minutes to do the encryption, whereas if I don't use
RandomAccessFileOrArray then it consumes 100mb of memory for encrypting a
10mb file and 250mb for a 45mb file. Can something be done better to reduce
the memory consumption with append=false? Pls find my code below.
private void encrypt(String src, String dest) {
BufferedOutputStream bos = new BufferedOutputStream(new
FileOutputStream(dest));
PdfReader reader = new PdfReader(src, null);
PdfStamper stamper = new PdfStamper(reader, bos, '\0', false);
stamper.setEncryption(null, null, PdfWriter.ALLOW_PRINTING,
true);
stamper.close();
reader.close();
bos.close();
}
Thanks
Srinivaas
--
View this message in context:
http://itext-general.2136553.n4.nabble.com/PDFStamper-consuming-more-memory-tp3312356p3312356.html
Sent from the iText - General mailing list archive at Nabble.com.
------------------------------------------------------------------------------
The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE:
Pinpoint memory and threading errors before they happen.
Find and fix more than 250 security defects in the development cycle.
Locate bottlenecks in serial and parallel code that limit performance.
http://p.sf.net/sfu/intel-dev2devfeb
_______________________________________________
iText-questions mailing list
iText-questions@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/itext-questions
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
