Ability to work with different crypto libs

[KSDaemon]

wamp-cra & crytosign auth flow require some crypto algo provided by a few different libs. It would be cool to not hardly depend on them but instead provide a kind of interface and/or DI layer to be able to use different libs.

The main reason for that is that big projects may already use some of the lib and that is not great to pull another crypto library to the project, taking into account that most of the time such libs are pretty big.