input: Write a python function to perform a handshake to establish a secure connection.
  assert perform_handshake() == 'Secure connection established!'
  assert perform_handshake() == 'Secure connection established!'
  assert perform_handshake() == 'Secure connection established!'
output: def perform_handshake():
      # Simulating a handshake process
      # In a real-world scenario, this might involve cryptographic protocols
      handshake_success = True
      
      if handshake_success:
          return 'Secure connection established!'
      else:
          return 'Handshake failed!'