If you're looking for secure sharing of private data on IPFS you should check out Peergos [0][1][2]. Disclaimer - I'm a co-founder. The model there is each user

If you're looking for secure sharing of private data on IPFS you should check out Peergos [0][1][2]. Disclaimer - I'm a co-founder. The model there is each user needs at least one Peergos instance storing their data, normally their home-server. We've designed it so that people should never have to see an encryption key, or cryptographic hash, nor know what pinning is. As far as apps go, we plan to build a sandbox and api in the browser for running untrusted apps served directly from Peergos which you can grant fine grained permissions to your data in Peergos. The sandbox here would be designed so an app couldn't even exfiltrate data via loading an external img tag. [0] https://peergos.org https://peergos.org [1] https://book.peergos.org https://book.peergos.org [2] https://github.com/peergos/peergos https://github.com/peergos/peergos