"file has not been decrypted" error

[alisufian]

Exception occurs when reading certain valid pdfs

File "/usr/local/lib/python2.7/dist-packages/PyPDF2/pdf.py", line 1019, in getObject
raise Exception, "file has not been decrypted"

PDF: http://dis.puc.state.oh.us/ViewImage.aspx?CMID=A1001001A13L20B64142B89320

[Rob1080]

I think I had a similar issue. Can you try:

input = pyPdf.PdfFileReader(<your file>)
if input.isEncrypted:
    input.decrypt('')

This may be related to this issue outlined here:
https://bugs.launchpad.net/pypdf/+bug/355479

[alisufian]

Great! It worked. Thank you. I should have researched a little more before filing a bug report.

[lukasz-virtualo]

I am using the trick:

if input.isEncrypted:
input.decrypt('')

However, some PDFs crash the script with the following traceback:

Traceback (most recent call last):
File "scripts/wm_add_page_pdf.py", line 85, in
if not input_pdf.decrypt(''): # try empty pass
File "/usr/lib/pymodules/python2.7/pyPdf/pdf.py", line 897, in decrypt
return self._decrypt(password)
File "/usr/lib/pymodules/python2.7/pyPdf/pdf.py", line 907, in _decrypt
user_password, key = self._authenticateUserPassword(password)
File "/usr/lib/pymodules/python2.7/pyPdf/pdf.py", line 948, in _authenticateUserPassword
encrypt.get("/EncryptMetadata", BooleanObject(False)).getObject())
File "/usr/lib/pymodules/python2.7/pyPdf/pdf.py", line 1821, in _alg35
key = _alg32(password, rev, keylen, owner_entry, p_entry, id1_entry)
File "/usr/lib/pymodules/python2.7/pyPdf/pdf.py", line 1732, in _alg32
m.update(id1_entry)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 1-5: ordinal not in range(128)

This is not normal, I would expect a return value from decrypt(), not an exception...

[lukasz-virtualo]

To clarify I'm using version pyPdf==1.13

[istommao]

input.decrypt('')
raise
NotImplementedError: only algorithm code 1 and 2 are supported

PyPDF2==1.26.0

[elmar-hinz]

input = pyPdf.PdfFileReader(<your file>)
if input.isEncrypted:
    input.decrypt('')

This works for me. Surprisingly I don't need it, when I run my script in the debugger step by step.

Maybe this works in the sense of a sleep function.

[TrendMend]

@istommao did you ever find a solution? I am having the same issue.

[javiermarcon]

I have the same error, when I try to read an unencrypted file. If I try to run input.decrypt(''), I get the error NotImplementedError: only algorithm code 1 and 2 are supported

[Hussam1]

I am having the issue I am reading an unencrypted file. If I try to run input.decrypt(''), I get the error NotImplementedError: only algorithm code 1 and 2 are supported

[DrameMariama]

@Hussam1 were you able to find a solution? I'm facing the same issue.

[FoldedPanda]

I think I solve the issue. I unlocked the pdf using: https://smallpdf.com/unlock-pdf

However, when I run
pdf_reader.getFields() I get some pretty weird stuff.

Not sure if it has anything to do with this or if the pdf was just poorly made from the start.

--Edit

I was using the wrong method, I really wanted .getFormTextFields(), and it worked just fine, so this really did do the trick for me.