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in some files I need to encrypt pdf file with 2 properties:
1. opening the pdf file does not require a password at all
2. making any changes (and if possible printing) would require the owner_pwd
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```
[..., canvas, bytesio(), ...]
can.save()
new_pdf = PdfFileReader(packet)
# Open template pdf
existing_pdf = PdfFileReader(open(input_pdf_pa…
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Side-channel attacks are a category of security threats that exploit information unintentionally leaked through computing systems' physical operation. Unlike direct attacks focusing on software or net…
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Unfortunately I cannot include the PDF as it is a bank statement, but hopefully the details below are enough.
The error is as follows:
```shell
DEBUG:pdfminer.pdfdocument:trailer={'Size': 70, '…
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I'm using command-line to sign a pdf file with open-pdf-sign.jar using my let's encrypt certificate (the same for the web site). But when I try to check the validity I receive the following answer. I …
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#### Actual behaviour
Atril does not decrypt files with passwords with special characters
#### Steps to reproduce the behaviour
The outfile.pdf generated by
`qpdf --encrypt '!"§$%&' '!"§$%&' 2…
ghost updated
4 years ago
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is there a way to encrypt and send media files like pdf,png via this lib?
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>XSalsa20 has the same shape as Salsa20, except for the much longer nonce: it produces a
512-bit output block given a 256-bit key, a 192-bit nonce, and a **64-bit** block counter.
-- http://cr.yp.…
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Enter with the interactive mode:
Open file.pdf
encrypt 123456
save
When I open the pdf, I type the password 123456, but it doesn't recognize it as correct
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### What were you trying to do?
I am unable to load an encrypted document in PDF-lib.
We would ideally like to be able to list out the pages and or make changes to a PDF document even if a permiss…