Hi all, I've put together a small project that will autoload custom JCA providers, bypassing the need to append to the java.security.properties file (which is not well documented), allowing for some programmatic access, and adding some logging.
https://github.com/tersesystems/jcaprovider It's published on bintray, and includes debugjsse, cloudfoundry, and bouncycastle as prebuilt provider implementations. Thanks, Will.