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https://issues.apache.org/jira/browse/PDFBOX-5767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17816646#comment-17816646
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Tilman Hausherr commented on PDFBOX-5767:
-----------------------------------------
Which one(s)? The PDF specification itself requires this. (I'm not a crypto
expert, so I don't know if Adobe is intentionally weakening the encryption)
> Encryption IV value
> -------------------
>
> Key: PDFBOX-5767
> URL: https://issues.apache.org/jira/browse/PDFBOX-5767
> Project: PDFBox
> Issue Type: Bug
> Reporter: Simon Steiner
> Priority: Major
>
> Should this be set to a random number instead of zeros:
> new IvParameterSpec(new byte[16])
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