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app.py
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app.py
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# app.py
from flask import Flask, render_template, request, send_file
from cryptography.fernet import Fernet
import os
app = Flask(__name__)
key = Fernet.generate_key()
cipher_suite = Fernet(key)
current_directory = os.getcwd()
@app.route('/')
def index():
return render_template('index.html')
@app.route('/upload_encrypt', methods=['POST'])
def upload_encrypt():
if 'file' not in request.files:
return "No file part"
file = request.files['file']
if file.filename == '':
return "No selected file"
encrypted_data = cipher_suite.encrypt(file.read())
encrypted_filename = os.path.join(current_directory, 'encrypted_file.txt')
with open(encrypted_filename, 'wb') as encrypted_file:
encrypted_file.write(encrypted_data)
return "File uploaded and encrypted successfully"
@app.route('/upload_decrypt', methods=['POST'])
def upload_decrypt():
if 'file' not in request.files:
return "No file part"
file = request.files['file']
if file.filename == '':
return "No selected file"
decrypted_data = cipher_suite.decrypt(file.read())
decrypted_filename = os.path.join(current_directory, 'decrypted_file.txt')
with open(decrypted_filename, 'wb') as decrypted_file:
decrypted_file.write(decrypted_data)
return "File uploaded and decrypted successfully"
@app.route('/download_encrypted')
def download_encrypted():
return send_file('encrypted_file.txt', as_attachment=True)
@app.route('/download_decrypted')
def download_decrypted():
return send_file('decrypted_file.txt', as_attachment=True)
if __name__ == '__main__':
app.run(debug=True)