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from tkinter import Tk

from tkinter import Label

from tkinter import BOTTOM

from tkinter import StringVar

from tkinter import Entry

from tkinter import Button

import base64

# initialize window

root = Tk()

root.geometry('500x300')

root.resizable(0, 0)

# title of the window

root.title("Cryptography World")

# label

Label(root, text='ENCODE DECODE', font='arial 20 bold').pack()

Label(root, text='By Anushka Chitranshi', font='arial 20 bold').pack(side=BOTTOM)

# define variables

Text = StringVar()

private_key = StringVar()

mode = StringVar()

Result = StringVar()

# function to encode

def Encode(key, message):

"""Encode the message."""

enc = []

for i in enumerate(message):

key_c = key[i % len(key)]

enc.append(chr((ord(message[i]) + ord(key_c)) % 256))

return base64.urlsafe_b64encode("".join(enc).encode()).decode()

# function to decode

def Decode(key, message):

"""Decode the message."""

dec = []

message = base64.urlsafe_b64decode(message).decode()

for i in enumerate(message):

key_c = key[i % len(key)]

dec.append(chr((256 + ord(message[i]) - ord(key_c)) % 256))

return "".join(dec)

# function to set mode

def Mode():

"""Take mode of cryptography."""

if mode.get() == 'e':

Result.set(Encode(private_key.get(), Text.get()))

elif mode.get() == 'd':

Result.set(Decode(private_key.get(), Text.get()))

else:

Result.set('Invalid Mode')

# Function to exit window

def Exit():

"""Exit the window."""

root.destroy()

# Function to reset

def Reset():

"""Reset the screen."""

Text.set("")

private_key.set("")

mode.set("")

Result.set("")

Label(

root, font='arial 12 bold', text='MESSAGE'

).place(x=60, y=60)

Entry(

root, font='arial 10', textvariable=Text, bg='ghost white'

).place(x=290, y=60)

# key

Label(root, font='arial 12 bold', text='KEY').place(x=60, y=90)

Entry(

root, font='arial 10', textvariable=private_key , bg='ghost white'

).place(x=290, y=90)

# mode

Label(

root, font='arial 12 bold', text='MODE(e-encode, d-decode)'

).place(x=60, y=120)

Entry(

root, font='arial 10', textvariable=mode , bg='ghost white'

).place(x=290, y=120)

# result

Entry(

root, font='arial 10 bold', textvariable=Result, bg='ghost white'

).place(x=290, y=150)

# result button

Button(

root, font='arial 10 bold', text='RESULT', padx=2, bg='LightGray', command=Mode

).place(x=60, y=150)

# reset button

Button(

root, font='anson', text='RESET', width=6, command=Reset, bg='Green', padx=2

).place(x=80, y=190)

# exit button

Button(

root, font='anson', text='EXIT', width=6, command=Exit, bg='Red', padx=2, pady=2

).place(x=180, y=190)

root.mainloop()