Your Private Cyberspace provides a complete platform for privacy preserving computation.
Instead of giving data away to other parties for analysis, the ideal is to protect privacy by letting people with the data process their data THEMSELVES and providing only the results to others.
However there will be situations where computation have to be performed externally (like with other people's private data), this is when Homomorphic Encryption comes in.
Very short video introduction to Homomorphic Encryption.
Office of the Director of National Intelligence, USA
The guy in the video Craig Gentry wrote the classic paper on fully homomorphic encryption:
Good Homomorphic Encryption Links:
Homomorphic Encryption Levels
Fiduciary Exchange has 3 different Homomorphic Encryption levels: