1#!/usr/bin/env python3 2# BlueKitchen GmbH (c) 2019 3 4# pip3 install pycryptodomex 5 6from Cryptodome.Cipher import AES 7from Cryptodome.Hash import CMAC 8 9def aes_cmac(key, n): 10 cobj = CMAC.new(key, ciphermod=AES) 11 cobj.update(n) 12 return cobj.digest() 13 14db_message = bytes.fromhex('010000280018020003280a0300002a04000328020500012a06000028011807000328200800052a090002290a0003280a0b00292b0c000328020d002a2b0e00002808180f000228140016000f1810000328a21100182a12000229130000290000140001280f1815000328021600192a'); 15db_hash_expected = bytes.fromhex('F1CA2D48ECF58BAC8A8830BBB9FBA990') 16db_hash_actual = aes_cmac(bytes(16), db_message); 17if db_hash_actual != db_hash_expected: 18 print("Expected: " + db_hash_actual.hex()) 19 print("Actual: " + db_hash_actual.hex()) 20