How To Encrypt/Decrypt File Using Python | Easy Method with Script
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if getting any error install Tkinter as (pip install tk)
Code#
from cryptography.fernet import Fernet
import tkinter as tk
from tkinter import filedialog, messagebox
import os
class EncryptionUtility:
def __init__(self, root):
self.root = root
self.root.title("File Encryptor/Decryptor")
File path variable
self.file_path = tk.StringVar()
Key file path
self.key_file_path = "secret.key"
Generate or load the key
self.load_or_generate_key()
Create Fernet cipher object
self.cipher = Fernet(self.cipher_key)
Create UI
self.create_ui()
def create_ui(self):
File selection
tk.Label(self.root, text="Select a File:").pack(pady=10)
tk.Button(self.root, text="Browse", command=self.browse_file).pack()
Encrypt Button
tk.Button(self.root, text="Encrypt", command=self.encrypt_file).pack(pady=10)
Decrypt Button
tk.Button(self.root, text="Decrypt", command=self.decrypt_file).pack(pady=10)
def browse_file(self):
file_path = filedialog.askopenfilename()
self.file_path.set(file_path)
def encrypt_file(self):
file_path = self.file_path.get()
if not file_path:
self.show_error("Please select a file.")
return
with open(file_path, 'rb') as file:
data = file.read()
encrypted_data = self.cipher.encrypt(data)
encrypted_file_path = file_path + ".enc"
with open(encrypted_file_path, 'wb') as encrypted_file:
encrypted_file.write(encrypted_data)
self.show_message(f"File encrypted successfully: {encrypted_file_path}")
def decrypt_file(self):
file_path = self.file_path.get()
if not file_path:
self.show_error("Please select a file.")
return
with open(file_path, 'rb') as encrypted_file:
encrypted_data = encrypted_file.read()
try:
decrypted_data = self.cipher.decrypt(encrypted_data)
except Exception as e:
self.show_error("Incorrect key or corrupted data. Decryption failed.")
return
decrypted_file_path = file_path + "_decrypted"
with open(decrypted_file_path, 'wb') as decrypted_file:
decrypted_file.write(decrypted_data)
self.show_message(f"File decrypted successfully: {decrypted_file_path}")
def load_or_generate_key(self):
if os.path.exists(self.key_file_path):
Key exists, load it
with open(self.key_file_path, 'rb') as key_file:
self.cipher_key = key_file.read()
else:
Key does not exist, generate and save it
self.cipher_key = Fernet.generate_key()
with open(self.key_file_path, 'wb') as key_file:
key_file.write(self.cipher_key)
def show_error(self, message):
messagebox.showerror("Error", message)
def show_message(self, message):
messagebox.showinfo("Success", message)
if _name_ == "__main__":
root = tk.Tk()
encryption_utility = EncryptionUtility(root)
root.mainloop()
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