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Originally Posted by JohnTheRipper
Do you have problems with the vanilla version? or the recently modified?
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'Fraid I'm not sure how to tell which one of vanilla or modified I have. I do have the same problem with v3. I don't know whether a similar change in v3 to the one I made in v5 would fix the problem there as I haven't tried it. Python is 2.6.4.
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What PDF version are your PDFs? (you can easily see it opening them with a text editor)
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PDF Version at the top is 1.6.
CFM is /V3
EBX_ENCRYPTIONTYPE is 5.
V is 4.
Note that I have other pdfs with those settings that convert fine without the code change. The difference appears to be that the ones that don't convert without the change have a LENGTH parameter of 64 set in the block at the end of the pdf, whilst the ones that do have no LENGTH parameter at all.