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https://issues.apache.org/jira/browse/PDFBOX-1594?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Manuel Kasper updated PDFBOX-1594:
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Attachment: pdfbox-2.0.0-r1580297-aes256.diff
fix-pdfbox-2.0.0-encrypt.diff
I've attached a patch against trunk for AES-256 encryption.
Note that encryption appears to be broken in trunk (as of r1580297) — the
Encrypt command generates an unencrypted PDF.
It seems that this was caused by r1577354. I've attached a quick fix
(fix-pdfbox-2.0.0-encrypt.diff) for this; however as I haven't spent enough
time to fully understand the original intent of the commit that caused the
problem, it would be good if you could review/fix it.
> Add support for AES256 Encryption
> ----------------------------------
>
> Key: PDFBOX-1594
> URL: https://issues.apache.org/jira/browse/PDFBOX-1594
> Project: PDFBox
> Issue Type: Improvement
> Reporter: Maruan Sahyoun
> Fix For: 2.0.0
>
> Attachments: fix-pdfbox-2.0.0-encrypt.diff, pdfbox-1.8.4-aes256.diff,
> pdfbox-2.0.0-r1580297-aes256.diff
>
>
> Adobe 9 added support for AES 256 encryption. Further information is
> available at
> http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/adobe_supplement_iso32000.pdf
> (specially 3.5.1) or ISO 32000-2.
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