Hello,
I am using podofo to read a pdf file generated by adobe acrobat with permission
password on it with 128-bit AES encryption level, using the following code:
try {
PdfMemDocument pdfDocument;
pdfDocument.Load([[[NSBundle mainBundle]
pathForResource:@"sample" ofType:@"pdf"] UTF8String]);
}
catch( PdfError & e ) {
e.PrintErrorMsg();
}
but I get the following error:
PoDoFo encounter an error. Error: 8 ePdfError_InternalLogic Error
Description: An internal error occurred. Callstack: #0 Error Source:
/Users/khalid_jumaa/Documents/podofo93_build/podofo-0.9.3/src/base/PdfParser.cpp:226
Information: Unable to load objects from file. #1 Error Source:
/Users/khalid_jumaa/Documents/podofo93_build/podofo-0.9.3/src/base/PdfParserObject.cpp:404
Information: Unable to parse the stream for object 2 0 obj . #2 Error Source:
/Users/khalid_jumaa/Documents/podofo93_build/podofo-0.9.3/src/base/PdfEncrypt.cpp:356
Information: Error AES-decryption data padding
Another observation is that when I read a plain pdf ( non-secure ) using
podofo, and then export it to a file, reading it back and trying to modify one
of the pages’ content results with the following error
Flate Decoding Error from ZLib: -3
PoDoFo encounter an error. Error: 40 ePdfError_Flate
Error Description: ZLib returned an error.
Callstack:
#0 Error Source:
/Users/khalid_jumaa/Documents/podofo93_build/podofo-0.9.3/src/base/PdfFiltersPrivate.cpp:574
PdfPainter::~PdfPainter(): FinishPage() has to be called after a page is
completed!Assertion failed: (!m_pCanvas), function ~PdfPainter, file
/Users/khalid_jumaa/Documents/podofo93_build/podofo-0.9.3/src/doc/PdfPainter.cpp,
line 149.
All of the above does not appear and the process of reading-exporting-reading
back using podofo as well as reading adobe-acrobat-exported secure pdfs works
correctly when the encryption algorithm is RC4
Khalid Jumaa------------------------------------------------------------------------------
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