* ioctl_compat() mode for ncr.h API as it is in cryptodev.h
* Put limits to sessions
* Export private keys to PKCS #8 format (can it be implemented?)
* Documentation for functions
* Is a writev() like interface needed?
* Implement the NIST DSA generation algorithm.
* Make key generation interruptible.
* Allow assymetric keys to wrap other keys.