Password-Manager

import tkinter as tk from tkinter import messagebox from tkinter import simpledialog import secrets import string from cryptography.fernet import Fernet import json import os

Set up the key for encryption/decryption (generated once and saved for later use)

def load_or_generate_key(): if not os.path.exists("key.key"): key = Fernet.generate_key() with open("key.key", "wb") as key_file: key_file.write(key) else: with open("key.key", "rb") as key_file: key = key_file.read() return key

key = load_or_generate_key() cipher_suite = Fernet(key)

Password Manager Class

class PasswordManager: def init(self): self.data_file = "passwords.json" self.load_data()

def load_data(self):
    try:
        with open(self.data_file, "r") as f:
            self.data = json.load(f)
    except (FileNotFoundError, json.JSONDecodeError):
        self.data = {}

def save_data(self):
    with open(self.data_file, "w") as f:
        json.dump(self.data, f, indent=4)

def add_password(self, website, username, password):
    encrypted_password = cipher_suite.encrypt(password.encode()).decode()
    self.data[website] = {"username": username, "password": encrypted_password}
    self.save_data()

def retrieve_password(self, website):
    entry = self.data.get(website)
    if entry:
        decrypted_password = cipher_suite.decrypt(entry["password"].encode()).decode()
        return entry["username"], decrypted_password
    else:
        return None

Generate a secure random password

def generate_password(length=12): characters = string.ascii_letters + string.digits + string.punctuation return ''.join(secrets.choice(characters) for _ in range(length))

GUI

def add_password(): website = website_entry.get() username = username_entry.get() password = password_entry.get()

if website and username and password:
    manager.add_password(website, username, password)
    messagebox.showinfo("Success", f"Password for {website} saved!")
else:
    messagebox.showwarning("Input Error", "Please fill out all fields.")

def generate_and_fill_password(): generated_password = generate_password() password_entry.delete(0, tk.END) password_entry.insert(0, generated_password)

def retrieve_password(): website = website_entry.get() if website: result = manager.retrieve_password(website) if result: username, password = result messagebox.showinfo("Password Found", f"Username: {username}\nPassword: {password}") else: messagebox.showwarning("Not Found", "No entry found for this website.") else: messagebox.showwarning("Input Error", "Please enter a website.")

Set up the manager and GUI

manager = PasswordManager()

root = tk.Tk() root.title("Password Manager")

tk.Label(root, text="Website:").grid(row=0, column=0, padx=5, pady=5) website_entry = tk.Entry(root, width=30) website_entry.grid(row=0, column=1, padx=5, pady=5)

tk.Label(root, text="Username:").grid(row=1, column=0, padx=5, pady=5) username_entry = tk.Entry(root, width=30) username_entry.grid(row=1, column=1, padx=5, pady=5)

tk.Label(root, text="Password:").grid(row=2, column=0, padx=5, pady=5) password_entry = tk.Entry(root, width=30, show="*") password_entry.grid(row=2, column=1, padx=5, pady=5)

generate_button = tk.Button(root, text="Generate Password", command=generate_and_fill_password) generate_button.grid(row=2, column=2, padx=5, pady=5)

add_button = tk.Button(root, text="Add Password", command=add_password) add_button.grid(row=3, column=1, padx=5, pady=5)

retrieve_button = tk.Button(root, text="Retrieve Password", command=retrieve_password) retrieve_button.grid(row=3, column=2, padx=5, pady=5)

root.mainloop()