Op 23/01/2013 11:11, Andreas Kuehne schreef: > Afaik iText does this in memory, but I would love to learn that I'm wrong.
For large files, you can write the file to disk. See http://itextpdf.com/book/digitalsignatures 2.2.4 Signing large PDF files When you use the createSignature() method as shown in code sample 2.1, iText will create a copy of the document you’re about to sign in memory, leaving the bytes that are reserved for the signature blank. iText needs this copy so that it can provide the bytes that need to be hashed and signed. This can be problematic for files with a large file size: you risk OutOfMemoryExceptions. Take a look at code sample 2.4 if you want to store the copy on disk instead of keeping it in memory: [...] NOTE: if you use the createSignature() method with a temporary file, you can use an OutputStream that is null, in that case, the temporary file will serve as the actual destination file. This is good practice if your goal is to store a signed file on your file system. If the OutputStream is not null, iText will always try to delete the temporary file after the signing is done. ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. ON SALE this month only -- learn more at: http://p.sf.net/sfu/learnnow-d2d _______________________________________________ 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
