Encrypt/Decrypt text

python3 fernetazo.py [--encrypt | --decrypt ]

Always one (and only one) of the arguments must be included.

• Create a txt file with named encrypt.txt.
• Run the script with the --encrypt argument.
• Set the password for your encryption.
• Store the token you get.

• Run the script with the --decrypt argument.
• Use the password and token when file was encrypted.
• You will get a file named decrypt.txt with the message previously encrypted.

This method is based on the use of something called salt to generate the encryption/decryption key of the Fernet element. To always get the same output with the password used, the salt should be always the same. For that reason, it is store as an environmental variable and you must always keep a safe back-up. Of course not the safest approach, but this is only a practice script not intended to be used in Production.