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https://issues.apache.org/jira/browse/PDFBOX-4453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16759011#comment-16759011
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Tilman Hausherr commented on PDFBOX-4453:
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I know, but I'm still scared in a weird, unexplainable way. Another thing is
that I still hope to find a "set of unique objects" class some day, then we'd
be back to have only 1 line of code.
About the signature - yes, that is possible... I'll take that risk for now, and
if it happens, somebody will find this comment. If it happens, an application
using private dictionaries would just fail at the first test, i.e. no risk in
production.
> Encrypted string not decrypted
> ------------------------------
>
> Key: PDFBOX-4453
> URL: https://issues.apache.org/jira/browse/PDFBOX-4453
> Project: PDFBox
> Issue Type: Bug
> Components: Crypto
> Affects Versions: 2.0.13
> Reporter: Tilman Hausherr
> Priority: Critical
> Fix For: 2.0.14, 3.0.0 PDFBox
>
> Attachments: 2AF-0088-NA-LMF35-40-01-2019-01-18-14-25-52(1).pdf
>
>
> In the attached file, an ancrypted string "0" should be decrypted to "3" but
> it is not.
> * It is RC4 40 bit enrcyption
> * The string is not decrypted because it is skipped because it is in the
> objects HashSet
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