What is bsssd?
Short answer: bsssd is a project, which develops support for Trusted Computing (TC) (as specified by the TCG) on FreeBSD and OpenBSD. The name bsssd is a combination of SSS (Secure Software Stack) and BSD.
For a more detailed description, see Architecture of the TCG Software Stack and The components of bsssd.
See News for a history of events concerning this project.