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https://issues.apache.org/jira/browse/PDFBOX-2801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14556472#comment-14556472
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Michele Balistreri commented on PDFBOX-2801:
--------------------------------------------
You are right it is not the same thing, but is another use-case for the patch
(tolerance of corrupted files). I attached a screenshot of the plaintext object
from the file, since I cannot post the entire file. I see no StmF or StrF
there, but I might be missing something.
> SecurityHandler does not tolerate plain-text COSString
> ------------------------------------------------------
>
> Key: PDFBOX-2801
> URL: https://issues.apache.org/jira/browse/PDFBOX-2801
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 2.0.0
> Reporter: Michele Balistreri
> Attachments: AES_fullencryption_corrupted.pdf,
> SecurityHandler-tolerant-decrypt.diff, wrong TU object.png
>
>
> SecurityHandler does not handle the possibility, that a COSString is already
> plain text if the document is encrypted. This patch makes it tolerant when
> decrypting COSString, so that if it fails it just logs that and keeps the
> original content. The code works with all files I have.
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