[girvo]

Which, for a particular real-world use case; I built a PoC for the four biggest insurance companies in my country that allowed them to query each others claims data to see if a claim has been made with another insurance company for the same car/accident/etc (apparently it’s pretty common, with a dodgy repairer involved to do this), without ever revealing the actual data and who was answering it. This would allow the companies to reduce fraud without falling afoul of data sharing prohibitions (which rightfully exist) or needing to necessarily trust one another.

We used a partial homomorphic encryption system for it, but I’m sure we could’ve used a Pederson commitment if we tweaked how we approached it.

One factor though that the PoC never truly got rid of was a semi-trusted central system. We didn’t need to though, at the time. Would’ve been neat however!