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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (JIRA)" <ji...@apache.org> on 2019/03/01 07:29:00 UTC
[jira] [Updated] (PDFBOX-4477) Large encrypted file takes days to
be parsed
[ https://issues.apache.org/jira/browse/PDFBOX-4477?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tilman Hausherr updated PDFBOX-4477:
------------------------------------
Summary: Large encrypted file takes days to be parsed (was: Large encrypted file takes day to be parsed)
> 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
> Priority: Major
> 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, 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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