python pip install pynacl python import nacl.utils from nacl.public import PrivateKey, Box python import nacl.utils from nacl.public import PrivateKey, Box private_key = PrivateKey.generate() public_key = private_key.public_key box = Box(private_key, public_key) message = b"Hello, world!" encrypted_data = box.encrypt(message) decrypted_data = box.decrypt(encrypted_data)