tinysshd is a minimalistic SSH server which implements only a subset of
SSHv2 features.

* tinysshd supports only secure cryptography
* tinysshd doesn't implement older crypto
* tinysshd doesn't implement unsafe features
* tinysshd doesn't have features such as: SSH1 protocol, compression,
  port forwarding, agent forwarding, X11 forwarding...
* tinysshd doesn't use dynamic memory allocation (no allocation
  failures, etc.)
