[jira] [Created] (PDFBOX-2268) AES-256 decryptions fails

["Michele Balistreri (JIRA)" <ji...@apache.org>]

Michele Balistreri created PDFBOX-2268:
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             Summary: AES-256 decryptions fails
                 Key: PDFBOX-2268
                 URL: https://issues.apache.org/jira/browse/PDFBOX-2268
             Project: PDFBox
          Issue Type: Bug
          Components: PDModel
    Affects Versions: 2.0.0
            Reporter: Michele Balistreri


When opening a document encrypted with AES-256 (owner password only) by providing no password, the isUserPasswordMethod fails, since it tries to decrypt a null pointer.

Also, the code validating the Perms dictionary is correct, but unfortunately not even Acrobat seems to write Perms correctly (in my case P = F0C0 and Perms = F2C0), so that check needs to be relaxed. Perhaps logging the issue instead of throwing an exception would be more adequate.

Provided is a patch for both issues. I understand it is probably suboptimal but I am completely new to the project and have not yet had the time to study all coding conventions. Considering the patch is very small maybe someone can take it as a pointer of what needs to be changes.



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