These are the source code and binary provided to me by Butterfly Labs.
I have not (yet) reviewed or audited the code myself.

fc4ca50a05e44de6aaf7ce6fa28eddd4e10e4dc4c9a24fa01a1b38ee4693c17a  BitForce_SC-1.2.9.tbz2
35a38a12b5fae699026626d7dd38c76df4c1b1852512fe2afd22a3c4b06376b4  BitForce_SC-1.2.9.zip