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https://issues.apache.org/jira/browse/PDFBOX-4554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16851276#comment-16851276
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Tilman Hausherr commented on PDFBOX-4554:
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When would it be "not 0 and buf.length"? As I wrote, to check a signature, even
if there were several revisions, you can always use the final file as input.
Each signature does not add the full file, only the objects that were modified
or added.
When does "ShowSignature" create temp files on disk?
> operations taking a byte[] need to allow for offset and length too
> ------------------------------------------------------------------
>
> Key: PDFBOX-4554
> URL: https://issues.apache.org/jira/browse/PDFBOX-4554
> Project: PDFBox
> Issue Type: Improvement
> Reporter: Jason Pyeron
> Priority: Major
>
> Without this, massive amounts of memory must be copied/allocated to "trim"
> byte[].
> See forthcoming pull request.
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