While working with python another important thing protecting pdf will be a password. Some of the critical PDF files are encrypted using a password. Today we will learn how to encrypt and decrypt PDF files. Let us dive into the code
from PyPDF2 import PdfReader, PdfWriter reader = PdfReader("sample.pdf") writer = PdfWriter() for page in reader.pages: writer.add_page(page) writer.encrypt("password") with open("encrypted-pdf.pdf", "wb") as f: writer.write(f)
writer.encrypt("password") This will encrypt the file with password “password”. If you try to open the file a password prompt will be shown. If you specify the password then only the content of this file is shown.
from PyPDF2 import PdfReader, PdfWriter reader = PdfReader("encrypted-pdf.pdf") writer = PdfWriter() if reader.is_encrypted: reader.decrypt("password") for page in reader.pages: writer.add_page(page) with open("decrypted-pdf.pdf", "wb") as f: writer.write(f)
reader.is_encrypted - check whether the file is encrypted, If file encrypted then a True is returned
reader.decrypt("password") - Decrypt the file using the proper password, If wrong password error is given it will raise an PyPDF2.errors.FileNotDecryptedError exception.
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