File Encryptor and Decryptor

Aim :

• To successfully encrypt sensitive files with a password.
• To decrypt them later with the password set by the encryptor.
• Do all the steps mentioned above, right from the terminal.

Purpose :

The purpose of the script is to encrypt sensitive files from the terminal to achieve better security.

Short description of package/script :

• The script lets you encrypt or decrypt a file.
• To do so, we use the pycryptodome library.
• The user passes the function and also the file on which the same is to be performed.
• Once the parameters are passed, a password is required to encrypt or decrypt a file (set by the encryptor)
• All passwords are hidden with asterisk using the pwinput library.

Workflow of the Project :

• When the script is run, it expects few parameters to be passed : function [-e/-d] and filename.
• Once the function and filename is defined, the script expects the user to input the password.
• The password along with the filename is passed on to the respective function [encrypt()/decrypt()]
• The encrypt function traces the file's path and creates an encrypted file with the password that was passed.
• The encrypted file is stored in the "encrypted" folder which is used by the decrypt function to trace the file.
• Decrypt function checks the input password and the password set earlier and stores the decrypted file in the decrypted folder.

Setup instructions :

• Install required libraries : pip install -r requirements.txt
• Place your file in the original folder for the script to work on it.
• Encrypt your file : python file_encryptor_decryptor.py -e file.extension
• Decrypt encrypted file : python file_encryptor_decryptor.py -d enc-file.extension

Output :

Author(s) :

• Piyush Mohan