Pypdf2.errors.dependencyerror: pycryptodome is required for aes algorithm

To resolve the issue “pypdf2.errors.dependencyerror: pycryptodome is required for aes algorithm”, follow the steps below:

Step 1: Make sure you have the pycryptodome library installed. If not, you can install it using pip:

    pip install pycryptodome
  

Step 2: Import the required modules in your Python script:

    from PyPDF2 import PdfFileReader
  

Step 3: Use the AES algorithm in your code:

    pdf_file = open('example.pdf', 'rb')
pdf_reader = PdfFileReader(pdf_file)
pdf_reader.decrypt('password', use_aes=True)
  

Make sure to replace ‘example.pdf’ with the actual path to your PDF file, and ‘password’ with the actual password if your PDF is encrypted.

By specifying use_aes=True, you are instructing PyPDF2 to use the AES algorithm. If the pycryptodome library is not installed, you will encounter the mentioned dependency error.

After following these steps, the error should be resolved, and you should be able to use the AES algorithm without any issues.