Switch from pycryptodome to pycryptodomex

So for some weird historical reasons, the same python module is
available as pycryptodome (Crypto.* namespace) and pycryptodomex
(Cryptodome.* namespace).  See the following information on the project
homepage: https://www.pycryptodome.org/src/installation

To make things extra-weird, Debian choose to package pycryptodomex as
python3-pycryptodome
(https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=886291).

So in order to support both Debian-packaged and differently-installed
packages, let's switch to pycryotodomex on all platforms/installers.

Change-Id: I04daed01f51f9702595ef9f9e0d7fcdf1e4adb62

README.md

@@ -46,7 +46,7 @@ Please install the following dependencies:
  - termcolor
  - colorlog
  - packaging
- - pycryptodome
+ - pycryptodomex
 
 Example for Debian:
 ```sh
@@ -54,6 +54,7 @@ sudo apt-get install --no-install-recommends \
 	pcscd libpcsclite-dev \
 	python3 \
 	python3-setuptools \
+	python3-pycryptodome \
 	python3-pyscard \
 	python3-pip
 pip3 install --user -r requirements.txt

pySim/ota.py

@@ -150,8 +150,8 @@ class OtaDialect(abc.ABC):
         pass
 
 
-from Crypto.Cipher import DES, DES3, AES
-from Crypto.Hash import CMAC
+from Cryptodome.Cipher import DES, DES3, AES
+from Cryptodome.Hash import CMAC
 
 class OtaAlgo(abc.ABC):
     iv = property(lambda self: bytes([0] * self.blocksize))

pySim/utils.py

@@ -616,9 +616,9 @@ def derive_milenage_opc(ki_hex: Hexstr, op_hex: Hexstr) -> Hexstr:
     """
     Run the milenage algorithm to calculate OPC from Ki and OP
     """
-    from Crypto.Cipher import AES
+    from Cryptodome.Cipher import AES
     # pylint: disable=no-name-in-module
-    from Crypto.Util.strxor import strxor
+    from Cryptodome.Util.strxor import strxor
     from pySim.utils import b2h
 
     # We pass in hex string and now need to work on bytes

requirements.txt

@@ -9,5 +9,5 @@ gsm0338
 pyyaml>=5.1
 termcolor
 colorlog
-pycryptodome
+pycryptodomex
 packaging

setup.py

@@ -20,7 +20,7 @@ setup(
         "pyyaml >= 5.1",
         "termcolor",
         "colorlog",
-        "pycryptodome",
+        "pycryptodomex",
         "packaging",
     ],
     scripts=[