diff options
Diffstat (limited to 'frozen_deps/Cryptodome/Hash/CMAC.py')
| -rw-r--r-- | frozen_deps/Cryptodome/Hash/CMAC.py | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/frozen_deps/Cryptodome/Hash/CMAC.py b/frozen_deps/Cryptodome/Hash/CMAC.py index df69f00..8feb79f 100644 --- a/frozen_deps/Cryptodome/Hash/CMAC.py +++ b/frozen_deps/Cryptodome/Hash/CMAC.py @@ -20,7 +20,6 @@ # SOFTWARE. # =================================================================== -import sys from binascii import unhexlify from Cryptodome.Hash import BLAKE2s @@ -29,8 +28,6 @@ from Cryptodome.Util.number import long_to_bytes, bytes_to_long from Cryptodome.Util.py3compat import bord, tobytes, _copy_bytes from Cryptodome.Random import get_random_bytes -if sys.version_info[:2] == (2, 6): - memoryview = bytes # The size of the authentication tag produced by the MAC. digest_size = None @@ -245,11 +242,15 @@ class CMAC(object): raise ValueError("MAC check failed") def hexverify(self, hex_mac_tag): - """Return the **printable** MAC tag of the message authenticated so far. + """Verify that a given **printable** MAC (computed by another party) + is valid. - :return: The MAC tag, computed over the data processed so far. - Hexadecimal encoded. - :rtype: string + Args: + hex_mac_tag (string): the expected MAC of the message, as a hexadecimal string. + + Raises: + ValueError: if the MAC does not match. It means that the message + has been tampered with or that the MAC key is incorrect. """ self.verify(unhexlify(tobytes(hex_mac_tag))) |