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https://issues.apache.org/jira/browse/PDFBOX-4453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16758624#comment-16758624
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Tilman Hausherr commented on PDFBOX-4453:
-----------------------------------------
Instead of
{code:java}
if (!objects.contains(obj))
{code}
one could use
{code:java}
boolean found = false;
for (COSBase base : objects)
{
if (base == obj)
found = true;
}
if (!found)
{code}
and now it is properly decrypted, however that is very inefficient.
> 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: Major
> 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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