def reset(key, folder, client_handler, sym_key_filename):
DriveManager.files_decrypt(key, folder)
new_key = Encryptor.generate_key()
with open(sym_key_filename, 'wb') as key_file:
key_file.write(new_key)
client_handler.change_key(new_key)
DriveManager.files_encrypt(new_key, folder)
