Openssl 1.1 fix for redistributed SSM crypto.py
Tiny fix that applies Andrej's fix for the upstream SSM OpenSSL 1.1 issue (https://github.com/apel/ssm/issues/96) to ARC redistributed SSM crypto.py file.
Tiny fix that applies Andrej's fix for the upstream SSM OpenSSL 1.1 issue (https://github.com/apel/ssm/issues/96) to ARC redistributed SSM crypto.py file.