from Cryptodome.Cipher import AES
from Cryptodome.Random import get_random_bytes

data = b'Walnuts are harvested with a green outer hull, which will eventually dry out and become brittle.  After it falls off, exposing the shell, the nut will look more like something that came from a store.  But I think in other areas they might slowly rot and leach bad flavors into the nut, given some of the instructions I have seen for hull removal.  Around here, that does not seem to be an issue.  Perhaps this area is on the dry side for walnuts.'

key = get_random_bytes(16)
cipher = AES.new(key, AES.MODE_EAX)
ciphertext, tag = cipher.encrypt_and_digest(data)
file_out = open("encrypted.bin", "wb")
[ file_out.write(x) for x in (cipher.nonce, tag, ciphertext) ]
file_out.close()


file_in = open("encrypted.bin", "rb")
nonce, tag, ciphertext = [ file_in.read(x) for x in (16, 16, -1) ]
file_in.close()

# let's assume that the key is somehow available again
cipher = AES.new(key, AES.MODE_EAX, nonce)

data = cipher.decrypt_and_verify(ciphertext, tag)

print(data)