python
import nacl.utils
from nacl.public import PrivateKey, SealedBox
private_key = PrivateKey.generate()
public_key = private_key.public_key
message = b'Hello, World!'
sealed_box = SealedBox(public_key)
encrypted = sealed_box.encrypt(message)
unseal_box = SealedBox(private_key)
decrypted = unseal_box.decrypt(encrypted)
print(decrypted.decode('utf-8'))
