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If you have problems importing PyQt5, just comment:
# from PyQt5.QtWidgets import QApplication
# all def center(): ...
# center(rootWin)
It just centers the window on screen
import base64
import hashlib
from Crypto import Random
from Crypto.Cipher import AES
class AESCipher:
bs = AES.block_size
def __init__(self, key):
self.key = hashlib.sha256(key.encode()).digest()
def encrypt(self, message):
message = self._pad(message).encode()
iv =
cipher =, AES.MODE_CBC, iv)
return base64.b64encode(iv + cipher.encrypt(message)).decode('utf-8')
def decrypt(self, enc):
enc = base64.b64decode(enc)
iv = enc[:AES.block_size]
cipher =, AES.MODE_CBC, iv)
return self._unpad(cipher.decrypt(enc[AES.block_size:])).decode('utf-8')
def _pad(self, s):
return s + ( - len(s) % * chr( - len(s) %
def _unpad(s):
return s[:-ord(s[len(s) - 1:])]
secret_key = "123"
import tkinter as tk
from tkinter.scrolledtext import ScrolledText
from tkinter import Button
from tkinter import BOTH, END, LEFT, RIGHT
import tkinter as tk
from PyQt5.QtWidgets import QApplication
def center(toplevel):
app = QApplication([])
screen_width = app.desktop().screenGeometry().width()
screen_height = app.desktop().screenGeometry().height()
size = tuple(int(_) for _ in toplevel.geometry().split('+')[0].split('x'))
x = screen_width/2 - size[0]/2
y = screen_height/2 - size[1]/2
toplevel.geometry("+%d+%d" % (x, y))
toplevel.title("Text Encryption / Decryption")
rootWin = tk.Tk()
def clicked_decrypt():
eText = textfield.get('1.0', END)
textfield.delete('1.0', END)
textfield2.delete('1.0', END)
sec = e_password.get()
aes_cipher = AESCipher(sec)
decrypted = aes_cipher.decrypt(eText)
textfield2.insert('insert', decrypted)
def clicked_encrypt():
eText = textfield2.get('1.0', END)
textfield.delete('1.0', END)
textfield2.delete('1.0', END)
sec = e_password.get()
aes_cipher = AESCipher(sec)
encrypted = aes_cipher.encrypt(eText)
textfield.insert('insert', encrypted)
textfield2 = ScrolledText(width=100, height=12)
textfield2.delete('1.0', END)
button2 = Button(rootWin, text="Encrypt", command=clicked_encrypt)
textfield = ScrolledText(width=100, height=12)
textfield.delete('1.0', END)
button = Button(rootWin, text="Decrypt", command=clicked_decrypt)
l1 = tk.Label(rootWin, text="Password")
e_password = tk.Entry(rootWin, show="*", width=25)
e_password.insert("insert", secret_key )
l1.pack(), y=450)
e_password.pack(), y=450)
rootWin.resizable(False, False)
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