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https://issues.apache.org/jira/browse/PDFBOX-5067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17260279#comment-17260279
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Tilman Hausherr commented on PDFBOX-5067:
-----------------------------------------
Why must the two fields be protected? CreateVisibleSignature.java isn't meant
as part of the library, it is a source code example for people to create their
own signing tool. Some parts may not be useful for all users, e.g. certify.
> make PDVisibleSignDesigner memory aware
> ---------------------------------------
>
> Key: PDFBOX-5067
> URL: https://issues.apache.org/jira/browse/PDFBOX-5067
> Project: PDFBox
> Issue Type: Improvement
> Components: Signing
> Affects Versions: 2.0.23
> Reporter: Ralf Hauser
> Priority: Major
> Attachments: patch5067_CreateVisibleSignature.txt,
> patch_PDFBOX-2512.txt, patch_PDFBOX-5067.txt
>
>
> PDFBOX-2512 might have failed earlier if I hadn't used
> MemoryUsageSetting.setupMixed(15000000)
> to limit the memory usage of PDDocument document to 15 MB in
> CreateVisibleSignature in
>
> a) setVisibleSignDesigner() and used the now memory-aware constructor of
> PDVisibleSignDesigner
> and
> b) in signPDF(), reused PDDocument
> setTsaUrl(tsaUrl);
> PDDocument doc = null;
> if (null != visibleSignDesigner) {
> doc = visibleSignDesigner.getDocument();
> }
> if (null == doc) {
> doc = Loader.loadPDF(inputFile, memoryUsageSetting);
> }
> // creating output document and prepare the IO streams.
> ...
>
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