Import InvalidSignature from the correct location

Author: alex

scapy/layers/tls/cert.py

@@ -45,10 +45,10 @@
     _EncryptAndVerifyRSA, _DecryptAndSignRSA
 from scapy.compat import raw, bytes_encode
 if conf.crypto_valid:
+    from cryptography.exceptions import InvalidSignature
     from cryptography.hazmat.backends import default_backend
     from cryptography.hazmat.primitives import serialization
     from cryptography.hazmat.primitives.asymmetric import rsa, ec
-    from cryptography.hazmat.backends.openssl.ec import InvalidSignature
 
 
 # Maximum allowed size in bytes for a certificate file, to avoid