Educational File Encryptor GUI (Python AES Project) | FuzzuTech

 Demo :

Click Video 👇👇👇

Features :

• Python AES encryption GUI app

• File encryption & decryption demo

• Educational safe sandbox project

• Tkinter + PyCryptodome example

• Python cybersecurity learning tool

Code :

# Important package install : pip install pycryptodome

import os

import tkinter as tk

from tkinter import filedialog, messagebox

from Crypto.Cipher import AES

from Crypto.Hash import SHA256

from Crypto import Random

# ---------- Encryption ---------- #

def encrypt(key, filename):

    try:

        chunksize = 64 * 1024

        outputFile = filename + ".locked"

        filesize = str(os.path.getsize(filename)).zfill(16)

        IV = Random.new().read(16)

        encryptor = AES.new(key, AES.MODE_CBC, IV)

        with open(filename, 'rb') as infile:

            with open(outputFile, 'wb') as outfile:

                outfile.write(filesize.encode('utf-8'))

                outfile.write(IV)

                while True:

                    chunk = infile.read(chunksize)

                    if len(chunk) == 0:

                        break

                    elif len(chunk) % 16 != 0:

                        chunk += b' ' * (16 - len(chunk) % 16)

                    outfile.write(encryptor.encrypt(chunk))

        messagebox.showinfo("✅ Encrypted", f"File Encrypted Successfully!\nSaved as: {outputFile}")

    except Exception as e:

        messagebox.showerror("❌ Error", f"Encryption Failed!\n{e}")

# ---------- Decryption ---------- #

def decrypt(key, filename):

    try:

        chunksize = 64 * 1024

        outputFile = filename.replace(".locked", "")

        with open(filename, 'rb') as infile:

            filesize = int(infile.read(16))

            IV = infile.read(16)

            decryptor = AES.new(key, AES.MODE_CBC, IV)

            with open(outputFile, 'wb') as outfile:

                while True:

                    chunk = infile.read(chunksize)

                    if len(chunk) == 0:

                        break

                    outfile.write(decryptor.decrypt(chunk))

                outfile.truncate(filesize)

        messagebox.showinfo("✅ Decrypted", f"File Decrypted Successfully!\nSaved as: {outputFile}")

    except Exception as e:

        messagebox.showerror("❌ Error", f"Decryption Failed!\n{e}")

# ---------- Helpers ---------- #

def getKey(password):

    hasher = SHA256.new(password.encode('utf-8'))

    return hasher.digest()

def encryptFile():

    filename = filedialog.askopenfilename(title="Select File to Encrypt")

    if not filename:

        return

    password = passwordEntry.get()

    if not password:

        messagebox.showwarning("⚠️ Warning", "Enter password before encrypting!")

        return

    encrypt(getKey(password), filename)

def decryptFile():

    filename = filedialog.askopenfilename(title="Select File to Decrypt (.locked)")

    if not filename:

        return

    password = passwordEntry.get()

    if not password:

        messagebox.showwarning("⚠️ Warning", "Enter password before decrypting!")

        return

    decrypt(getKey(password), filename)

def togglePassword():

    if passwordEntry.cget("show") == "*":

        passwordEntry.config(show="")

        toggleBtn.config(text="🙈 Hide")

    else:

        passwordEntry.config(show="*")

        toggleBtn.config(text="👁️ Show")

# ---------- GUI ---------- #

root = tk.Tk()

root.title("⚡ Educational Ransomware Simulator (Safe)")

root.geometry("500x400")

root.config(bg="#111827")

root.resizable(False, False)

tk.Label(root, text="⚡ Educational Ransomware Simulator", fg="#00FFB0", bg="#111827",

         font=("Helvetica", 18, "bold")).pack(pady=15)

tk.Label(root, text="🔐 100% Safe for Learning — Encrypt & Decrypt Instantly", fg="#A3A3A3",

         bg="#111827", font=("Helvetica", 10)).pack(pady=5)

frame = tk.Frame(root, bg="#111827")

frame.pack(pady=20)

tk.Label(frame, text="Enter Secret Key:", fg="white", bg="#111827", font=("Helvetica", 11)).grid(row=0, column=0, padx=5)

passwordEntry = tk.Entry(frame, width=30, show="*", font=("Helvetica", 11))

passwordEntry.grid(row=0, column=1, padx=5)

toggleBtn = tk.Button(frame, text="👁️ Show", command=togglePassword, bg="#222", fg="#00FFB0", font=("Helvetica", 9))

toggleBtn.grid(row=0, column=2, padx=5)

tk.Button(root, text="Encrypt File 🔒", width=20, command=encryptFile, bg="#00B050", fg="white",

          font=("Helvetica", 12, "bold")).pack(pady=10)

tk.Button(root, text="Decrypt File 🔓", width=20, command=decryptFile, bg="#0078D7", fg="white",

          font=("Helvetica", 12, "bold")).pack(pady=5)

tk.Label(root, text="⚠️ Educational Use Only – Don’t Use on Others' Data", fg="#FF5050", bg="#111827",

         font=("Helvetica", 9, "italic")).pack(pady=30)

root.mainloop()