[Dennis Reed]

ENCRYPT allows the asym_provider to be specified.
But it only uses it for the KeyGenerator lookup, not the Cipher lookup.
And the sym_provider is hard-coded to null.

Is there a reason the sym_provider isn't configurable, and that the providers aren't used for the Cipher lookups?

This is causing issues for a customer, because they have an application that inserts a security provider at the beginning of the list.
When JGroups first starts, it uses the default provider (BouncyCastle), but if there's a shun/reconnect after the application
has inserted its provider, JGroups switches to the application's provider. And since some members are now using a different provider,
they can't communicate.