Please create a Python program that can convert a text string to an encrypted massage and convert the encrypted message back to the original message. 1. Read a string message from a text file. (You have to prepare a text file by using a text editor) 2. Print the input string. 3. Convert this message into an encrypted message by using a list element substitution. (Please prepare 10 character substitutions) 4. Print your encrypted message. 5. Save this encrypted message to a file. 6. Convert this encrypted message back to the original message by using a list element substitution. 7. Print your original message. (decrypted message) 8. Submit your input text file and output file. 9. Submit a word document with Python code, and output screen shots.