The automation of encrypting PDF files or decrypting them can be achieved through the PyPDF Python library. You might face the following error: pypdf.errors.DependencyError: PyCryptodome is required for AES algorithm because of the pycryptodome dependency.
Prerequisites
- sudo privileges
- Python installed
- Pip installed
Solution
Depending on your python version you need to install pycryptodome package through pip.
pip install pycryptodome
or:
pip3 install pycryptodome
Conclusion
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