Comment by yarg
3 years ago
Can this functionality be implemented as a peer-to-peer (or federated) service?
I'm assuming it'll depend on breaking down questions into hierarchical sub-questions that can either be recomposed locally or in another homomorphic context. But can that sort of thing be done without data-leaks, or prohibitively expensive inter-node communication?
Are there any introductory resources (that you know of) on homomorphic encryption and compute that'll turn this into less of a mind-fuck?
NuCypher is doing some really fun stuff in this space: https://www.nucypher.com
Basically, you upload encrypted blobs to a P2P network, and you can issue special proxy-re-encryption keys to people that allows them to download the encrypted content, without revealing any of the content to people running the nodes (who store and replicate the data). You can also do really interesting things like revoking keys to remove access for people who haven't downloaded the blob yet.
It would be very cool to federate this! I am particularly interested in applications to DHTs/Kademlia, especially for things like IPFS.
Since this has only recently become practical, there is a bit of dearth of resources on it at the moment. I’m going to try to do my part and write a blog post at some point.