Practice Python tools to encrypt and decrypt files; Account for missing files; Task: Consider the Python .py file(s) provided with this assignment on Blackboard and modify the code to meet the following requirements: - Complete the main function that will run whenever the module is called; - The main function should interact with the user and allow the user to specify whether he or she want to encrypt or decrypt; - The user should be allowed to choose between 1) the insecure mode where the encryption key file is saved for usage in decryption or 2) a more secure way where the key is generated whenever it is used through a passphrase; - The user should be allowed to input the file to encrypt or decrypt; - When a user input the file to encrypt, the program should identify the file extension explicitly. That same extension should be added to the encrypted file and the decrypted file. - The program should be able to run from the command line interface and the python shell. Demonstrate both and submit screenshots of your demonstration.

need to use the pip install cryptography to install cryptography and generate a n asymmetric key to work with