pdfEncrypt

A simple command-line tool to password-encrypt PDF files using Python.

Description

pdfEncrypt.py takes an existing PDF file and produces a new, password-protected copy of it. The original file is left untouched, and the encrypted version is saved alongside it with a _secured suffix (e.g., document_secured.pdf).

Requirements

• Python 3.x
• PyPDF2

Install the dependency with:

pip install PyPDF2

Usage

python pdfEncrypt.py -d <directory> -f <filename>

Arguments

Flag	Long Form	Description
-d	--DIR	Path to the directory containing the PDF file
-f	--FILE	Name of the PDF file to encrypt
-h	--help	Show help message

You will be prompted to enter a password securely after the arguments are validated.

Example

python pdfEncrypt.py -d "C:\Users\John\Documents" -f "report.pdf"

Output:

Enter a Password:
File was Encrypted.

This will create report_secured.pdf in the same directory as the original file.

Notes

• The original PDF is not modified. A new file with the _secured suffix is created.
• The password prompt uses getpass, so the password will not be visible as you type it.
• The script currently uses Windows-style path separators (\). If running on macOS or Linux, update the path separator to /.