* 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.
* Tie keys to specific algorithms
* Add support for AEAD ciphers
* Add permissions to keys.
