How to password protect (encrypt) and decrypt PDF files with Python

Open the file first. After that, you can use the Decrypt option to remove the password from pdf file.

Navigate to the Document Properties from File>Properties>Securtiy and check the Document Security method. Is the Security Method is selected as ...

Solved: I am trying to remove password security on PDFs and the password works to open the file, but not to turn off security.

You can set a owner password to restrict editing PDF, not set the file-open password. When you forgot a strong file-open password, there is almost no ways to ...

It returns invalid password. The PDF viewer evince opens the file without problems. I try running with --password-is-hex-key option, no errors ...

qpdf does require you to provide the correct password when you open a file. It does not crack passwords. You could potentially use qpdf to do a brute force ...

I am getting following exception while decrypting PDF password even though PDF password is correct: org.apache.pdfbox.pdmodel.encryption.

I have a PDF file protected by password - I know the correct user password. The problem is, that I am only able to open it on Windows Adobe Reader.

I am using the PDFBox 2.0.8 and trying to use command line options supplied to a jar file for PDF decryption. There are couple of PDF files which result in ...

QPDF will remove the encryption from a pdf file without requiring the user to specify the password, but it won't remove encryption (without the password)