Encryption and Decryption using Python

 In this tutorial, I am going to show you how can we encrypt and decrypt text using python:

Here is the code:

Create->. Main.py

copy and pest below code

alphabet = [

' ','a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',

'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',' ','a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'

]

direction = input("Type 'encode' to encrypt, type 'decode' to decrypt:\n")

text = input("Type your message:\n").lower()

shift = int(input("Type the shift number:\n"))

def encrypt(text, shift):

cyper_text = ""

for letter in text:

position = alphabet.index(letter)

new_position = alphabet[position + shift]

cyper_text += new_position

print(cyper_text)

def decrypt(text, shift):

decyper_text = ""

for letter in text:

position = alphabet.index(letter)

new_position = alphabet[-27 + position

- shift]

decyper_text += new_position

print(decyper_text)

if direction == 'encrypt':

encrypt(text=text, shift=shift)

else:

decrypt(text, shift)