Unzips package of encrypted file chunks then decrypts & concatenates to recover the original file

Note: For use with split_encrypt_script (https://github.com/SpawnID0000/split_encrypt_script)

Before running this script, install or upgrade Python's cryptography module if not already running the latest:

 pip show cryptography

 pip install --upgrade cryptography

Run the script using the following command line format:

 python3 decrypt_concat_script.py [-h] [--log] input_path [output_dir]