use bytes.fromhex instead...

lora_comms.py

@@ -25,7 +25,6 @@
 import os
 import unittest
 
-from binascii import a2b_hex
 from ctypes import Structure, POINTER, CFUNCTYPE, pointer, sizeof
 from ctypes import c_uint8, c_uint16, c_ssize_t, c_size_t, c_uint64, c_int
 from ctypes import CDLL
@@ -233,16 +232,16 @@ class TestX25519(unittest.TestCase):
 
 	def test_rfc7748_6_1(self):
 		# KAT from https://datatracker.ietf.org/doc/html/rfc7748#section-6.1
-		apriv = a2b_hex('77076d0a7318a57d3c16c17251b26645df4c2f87ebc0992ab177fba51db92c2a')
+		apriv = bytes.fromhex('77076d0a7318a57d3c16c17251b26645df4c2f87ebc0992ab177fba51db92c2a')
 
 		akey = X25519(apriv)
-		self.assertEqual(akey.getpub(), a2b_hex('8520f0098930a754748b7ddcb43ef75a0dbf3a0d26381af4eba4a98eaa9b4e6a'))
+		self.assertEqual(akey.getpub(), bytes.fromhex('8520f0098930a754748b7ddcb43ef75a0dbf3a0d26381af4eba4a98eaa9b4e6a'))
 
-		bpriv = a2b_hex('5dab087e624a8a4b79e17f8b83800ee66f3bb1292618b6fd1c2f8b27ff88e0eb')
+		bpriv = bytes.fromhex('5dab087e624a8a4b79e17f8b83800ee66f3bb1292618b6fd1c2f8b27ff88e0eb')
 		bkey = X25519(bpriv)
-		self.assertEqual(bkey.getpub(), a2b_hex('de9edb7d7b7dc1b4d35b61c2ece435373f8343c85b78674dadfc7e146f882b4f'))
+		self.assertEqual(bkey.getpub(), bytes.fromhex('de9edb7d7b7dc1b4d35b61c2ece435373f8343c85b78674dadfc7e146f882b4f'))
 
-		ss = a2b_hex('4a5d9d5ba4ce2de1728e3bf480350f25e07e21c947d19e3376f09b3c1e161742')
+		ss = bytes.fromhex('4a5d9d5ba4ce2de1728e3bf480350f25e07e21c947d19e3376f09b3c1e161742')
 		self.assertEqual(akey.dh(bkey.getpub()), ss)
 		self.assertEqual(bkey.dh(akey.getpub()), ss)