Secret-Notes-Tkinter/main.py at master · MetinQardasov11/Secret-Notes-Tkinter · GitHub

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from tkinter import *
from tkinter import messagebox
import base64

FONT = ("Arial", 20, "bold")

window = Tk()
window.title("Secret Notes")
window.minsize(width=500, height=500)
window.config(padx=30, pady=30)


# * Function to save and encrypt notes
def save_and_encrypt_notes():
    title = title_entry.get()
    message = input_text.get("1.0", END)
    master_secret = master_secret_input.get()

    if len(title) == 0 or len(message) == 0 or len(master_secret) == 0:
        messagebox.showerror(title="Error", message="Please fill in all fields.")
    else:
        message_encrypted = encode(master_secret, message)
        try:
            with open("mysecret.txt", "a") as file:
                file.write(f'\n{title}\n{message_encrypted}')
        except FileNotFoundError:
            with open("mysecret.txt", "w") as file:
                file.write(f'\n{title}\n{message_encrypted}')
        finally:
            title_entry.delete(0, END)
            master_secret_input.delete(0, END)
            input_text.delete("1.0", END)


# * Function to encode and decode messages
def encode(key, clear):
    enc = []
    for i in range(len(clear)):
        key_c = key[i % len(key)]
        enc_c = chr((ord(clear[i]) + ord(key_c)) % 256)
        enc.append(enc_c)
    return base64.urlsafe_b64encode("".join(enc).encode()).decode()

def decode(key, enc):
    dec = []
    enc = base64.urlsafe_b64decode(enc).decode()
    for i in range(len(enc)):
        key_c = key[i % len(key)]
        dec_c = chr((256 + ord(enc[i]) - ord(key_c)) % 256)
        dec.append(dec_c)
    return "".join(dec)


# * Function to decrypt notes
def decrypt_notes():
    message_encrypted = input_text.get("1.0", END)
    master_secret = master_secret_input.get()

    if len(message_encrypted) == 0 or len(master_secret) == 0:
        messagebox.showerror(title="Error", message="Please fill in all fields.")
    else:
        try:
            decrypted_message = decode(master_secret, message_encrypted)
            input_text.delete("1.0", END)
            input_text.insert("1.0", decrypted_message)
        except:
            messagebox.showerror(title="Error", message="Decryption failed. Check your master secret.")


# * photo
photo = PhotoImage(file="top-secret.png")
photo_label = Label(image=photo)
photo_label.pack()


# * Title Label
title_info_label = Label(text="Enter your title:", font=FONT)
title_info_label.pack()


# * Title Input
title_entry = Entry(width=30)
title_entry.pack()


# * Note Label
input_info_label = Label(text="Enter your secret:")
input_info_label.pack()


# * Note Input
input_text = Text(height=10, width=40)
input_text.pack()


# * Master Secret Label
master_secret_label = Label(text="Enter your master secret:", font=FONT)
master_secret_label.pack()


# * Master Secret Input
master_secret_input = Entry(width=30)
master_secret_input.pack()


# * Save Button
save_button = Button(text="Save & Encrypt", width=10, command=save_and_encrypt_notes)
save_button.pack()


# * Decrypt Button
decrypt_button = Button(text="Decrypt", width=10, command=decrypt_notes)
decrypt_button.pack()

window.mainloop()