IndexError: list index out of range after decrypting encrypted file

[denis-osipov]

After attempt to get page from encrypted file raise error 'PyPDF2.utils.PdfReadError: file has not been decrypted'.
It's ok. But after decrypting the PdfFileReader object calling pdfReader.getPage(0) raise error 'IndexError: list index out of range', although pdfReader.getNumPages() return 19.
If decript file before first call getPage() 'IndexError: list index out of range' doesn't raise.

>>> pdfFileObj = open('encrypted.pdf', 'rb')
>>> pdfReader = PyPDF2.PdfFileReader(pdfFileObj)
>>> pdfReader.getPage(0)
Traceback (most recent call last):
 ...
  File "C:\Python36\lib\site-packages\PyPDF2\pdf.py", line 1617, in getObject
    raise utils.PdfReadError("file has not been decrypted")
PyPDF2.utils.PdfReadError: file has not been decryptedd
>>> pdfReader.decrypt('rosebud')
1
>>> pageObj = pdfReader.getPage(0)
Traceback (most recent call last):
...
  File "C:\Python36\lib\site-packages\PyPDF2\pdf.py", line 1177, in getPage
    return self.flattenedPages[pageNumber]
IndexError: list index out of range
>>> pdfReader.getNumPages()
19

[KeyC0de]

I experience the same exact error. Have you figured it out?

[denis-osipov]

I think so. I make PR #359 that should solve the problem. At least it works for me.

[Topsolid1]

I'm having the same issues as you.
I manually fixed it since PR #359 isn't merged yet, and I can confirm that it works for me as well.
Thanks!

[shades6057]

denis-osipov, thanks, PR #359 fixed me as well. Had to also fix it manually.

Thanks!!

[MartinThoma]

@KeyC0de @Topsolid1 The fix was just merged and will be in the next release (some time this month). As the new maintainer, I hope to merge such fixes faster in future 🤞