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https://issues.apache.org/jira/browse/PDFBOX-4477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16782359#comment-16782359
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Tilman Hausherr edited comment on PDFBOX-4477 at 3/2/19 12:40 PM:
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Yes the file is encrypted, and the permissions probably prohibit text
extraction, this is very common. I didn't try text extraction myself, I just
looked at the file with PDFDebugger. You can still extract text
programmatically, or use the owner password with the command line utility.
was (Author: tilman):
Yes the file is encrypted, and the permissions probably prohibit that. I didn't
try text extraction, I just looked at the file with PDFDebugger. You can still
extract text programmatically, or use the owner password with the command line
utility.
> Large encrypted file takes days to be parsed
> --------------------------------------------
>
> Key: PDFBOX-4477
> URL: https://issues.apache.org/jira/browse/PDFBOX-4477
> Project: PDFBox
> Issue Type: Bug
> Components: Crypto, Parsing
> Affects Versions: 2.0.14
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Priority: Major
> Labels: optimization
> Fix For: 2.0.15, 3.0.0 PDFBox
>
>
> As reported by [~slavago] in TIKA-2832. File is confidential but I have it.
> Initial findings:
> - File is AES256 encrypted with empty user password
> - File has about 1000 objects
> - File is a tagged PDF
> - HashMap in SecurityHandler grows to 100000?!
> - Using an IdentityHashMap speeds up the process dramatically (parsed in a
> few seconds), and it may also be a better solution that what was done in
> PDFBOX-4453
> Todo:
> - Read description of IdentityHashMap again
> - Find out why the HashMap grows so much. Could it be that identical objects
> are stored twice? Or does the file have many direct objects?
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