async crypto performance from userland
Support for async crypto operations is not provided via the userland cryptographic framework. However, it is pretty simple to create a simple driver that can be used by a userland app to gain access to the kernel cryptographic framework and async support. Performance is pretty good -- if you look at how the framework is implemented, requests to the hardware are passed down to the kernel framework via /dev/crypto anyway. You could probably talk to /dev/crypto directly -- looking here -- but there are also plenty of simple of driver examples on docs.sun.com that can be easily enhanced to provide this functionality.
