A Reusable Platform for Building Sovereign Information Sharing Applications

Sovereign information sharing allows autonomous orga- nizations to compute queries across databases in such a manner that nothing but the result is revealed. We present the design of a platform that can be used for building sovereign information sharing applications effi- ciently and quickly. In addition to the core protocols, the platform incorporates components for resource dis- covery, schema mapping, authentication, and hardware- assisted performance enhancement. We also describe a national security application we have built using this platform that shows the practicality of sovereign infor- mation sharing in virtual organizations.