示例#1
0
class Authenticated_Encryption(object):
	def __init__(self, keys):
		self.mac = CBC_MAC((keys[0], keys[1]))
		self.aes_cbc = AES_CBC(keys[2])

	def encrypt_and_sign(self, message):
		cipher = self.aes_cbc.encrypt(message)
		tag = self.mac.sign(cipher)
		return cipher, tag

	def authenticate_and_decrypt(self, cipher, tag):
		authenticated = self.mac.verify(cipher, tag)
		message = "" if not authenticated else self.aes_cbc.decrypt(cipher)
		
		return authenticated, message
示例#2
0
 def test_AES_CBC(self):
     key = os.urandom(16).encode('hex')
     decryptor = AES_CBC(key)
     for m in self.msgs:
         self.assertEqual(decryptor.decrypt(decryptor.encrypt(m)), m)