Fix tests for Ed448 and X448 keys

GnuPG uses fingerprints for these keys that are 64 hex bytes, not 40
like for the other algorithms.  Fix the tests to account for this.

Author: DemiMarie

splitgpg2/test_server.py

@@ -171,7 +171,7 @@ def generate_key(self,
                      *,
                      subkey_usage: str = 'encrypt',
                      client: bool = True) -> Tuple[bytes, bytes]:
-        fpr_re = re.compile(rb'\A[0-9A-F]{40}\Z')
+        fpr_re = re.compile(rb'\A[0-9A-F]{40}(?:[0-9A-F]{24})?\Z')
         email = 'a' + str(self.counter) + self.key_uid
         self.counter += 1
         handle = base64.b64encode(os.urandom(32)).decode('ascii', 'strict')
@@ -292,6 +292,7 @@ def do_test(ty: str, subkey_ty: str, key_param: Union[str, int], subkey_param: U
         do_test('ECDSA', 'ECDH', 'NIST P-521', 'NIST P-521')
         do_test('ECDSA', 'ECDH', 'secp256k1', 'secp256k1')
         do_test('EDDSA', 'ECDH', 'Ed25519', 'Curve25519')
+        do_test('EDDSA', 'ECDH', 'Ed448', 'X448')
 
         for i in curves:
             if i.startswith('ed'):