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https://issues.apache.org/jira/browse/PDFBOX-2456?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephen Hendrix updated PDFBOX-2456:
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Attachment: aes256.diff
Another option which might be better is to skip the decryption of the
encryption dictionary entirely in SecurityHandler.proceedDecryption
I attached the diff (aes256.diff) with this change as well as my patch from
PDFBOX-2471
> create TestSymmetricKeyEncryption.java
> --------------------------------------
>
> Key: PDFBOX-2456
> URL: https://issues.apache.org/jira/browse/PDFBOX-2456
> Project: PDFBox
> Issue Type: Improvement
> Components: Utilities
> Affects Versions: 2.0.0
> Environment: java7 debian7
> Reporter: Ralf Hauser
> Labels: AES256
> Fix For: 2.0.0
>
> Attachments: TestSymmetricKeyEncryption.java, aes256.diff,
> enc128bit_20141025_115145.pdf, enc256bit_20141025_105451.pdf,
> preEnc_20141025_105451.pdf, preEnc_20141025_115145.pdf
>
>
> similarly to org.apache.pdfbox.encryption.TestPublicKeyEncryption, also test
> password based encryption
> 1) 128bit
> 2) 256bit AES PDFBOX-1594
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