----- Forwarded by Adam Nichols/UR/CER/XLDynamics on 06/23/2011 10:52
-----
From:
Miao Fan<[email protected]>
To:
[email protected]
Date:
06/23/2011 09:33
Subject:
Re: Why org.bouncycastle.* packages were specified as mandatory in the
manifest in the pdfbox-1.5.0.jar
Hi Tomas,
Thanks for the info.
Adam,
I agree the majority may be more interested in using the bc. But make it
optional in "manifest" still server your interest. You can still use it
without any issue. :) But for those such as us do not want it, it works
for
us too.
In addition, if bc to be considered as a mandatory plugs-ins, that's fine
too. But please modify http://pdfbox.apache.org/dependencies.html. On that
page, it says "Optional dependencies".
Thanks,
Miao
On Thu, Jun 23, 2011 at 12:07 PM,<[email protected]> wrote:
What would be the correct action if a user tries to decrypt a PDF
without
the decryption libraries (bc)? Currently, it throws an exception, which
seems like the most reasonable thing to do.
Marking bc as optional and not including it by default seems like it
would
not be in the best interest to the majority of users. As Thomas
mentioned, encrypted PDFs are not rare, so not having the ability to
decrypt them out of the box would be a major drawback. As a side note,
many documents with no password and no apparent restrictions are still
encrypted, just with a blank password. You'll still need the decryption
libraries to deal with these documents.
For those who are unwilling or unable to use bc, you can remove the
library manually as long as you do not need to ever deal with any
encrypted documents. On the other hand, if you need to deal with
encryption and can't use bc, we would be happy to accept a patch which
decrypts them without the library. Then if the bc libs aren't present,
it
can fall back to your new implementation. This would make sure existing
users don't have any regression bugs (as they'll still use bc), and
you'd
be able to remove bc and still have working crypto capabilities. Once
the
non-bc version is stable and can handle all RC4, and AES cases that bc
can
handle, we can mark the bc libs as optional.
----
Thanks,
Adam
From:
Thomas Chojecki<[email protected]>
To:
[email protected]
Date:
06/23/2011 05:53
Subject:
Re: Why org.bouncycastle.* packages were specified as mandatory in the
manifest in the pdfbox-1.5.0.jar
Zitat von Miao Fan<[email protected]>:
Hello,
Hi Miao,
I downloaded pdfbox 1.4 and 1.5 recently, and found the manifest in
the
downloaded jars contains mandatory dependencies of org.bouncycastle.*
plugins which should not. I have to modify wrapper it by removing them
from
manifest to use. I want to confirm if that's a bug and if yes, how to
submit
a bug against it?
Some functionality of the pdfbox need the BC. I would also prefer to
remove this dependancy because BC is a heavy weight library and do not
harmony with a small pdf library.
B.T.W, adding org.bouncycastle.* plugins is not option for us now
since
it
needs to get legal approval etc to get them in.
I found out that the PDF Encryption need the library. So only for
encrypted pdf documents.
Maybe someone can rewrite the code of the *.pdmodel.encryption.* and
use only the java cryptography extension (JCE)
Thanks,
Miao
Best regards
Thomas
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