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https://issues.apache.org/jira/browse/PDFBOX-3149?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesse Long updated PDFBOX-3149:
-------------------------------
    Attachment: PDFBOX-3149.patch

Patch to support decrypting empty streams.

> Failure to decrypt empty strings (AES 128)
> ------------------------------------------
>
>                 Key: PDFBOX-3149
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-3149
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Crypto, Parsing, PDModel
>    Affects Versions: 2.0.0
>            Reporter: Jesse Long
>            Priority: Minor
>         Attachments: PDFBOX-3149.patch
>
>
> SecurityHandler fails to decrypt empty strings in a AES 128 encrypted PDF. 
> Strings like: <</Name ()>>
> This is because it tries to read the first 16 bytes as the AES IV, failing 
> which it throws IOException. Solution: if you cannot read any bytes from the 
> stream, it is empty and so there is nothing to decrypt.



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