Cryptographically Secure Information Flow Control on Key-Value Stores
Lucas Waye, Pablo Buiras, Owen Arden, Alejandro Russo, and Stephen Chong
Proceedings of the 24th ACM Conference on Computer and Communications Security (CCS), November 2017.

We present Clio, an information flow control (IFC) system that transparently incorporates cryptography to enforce confidentiality and integrity policies on untrusted storage. Clio insulates developers from explicitly manipulating keys and cryptographic primitives by leveraging the policy language of the IFC system to automatically use the appropriate keys and correct cryptographic operations. We prove that Clio is secure with a novel proof technique that is based on a proof style from cryptography together with standard programming languages results. We present a prototype Clio implementation and a case study that demonstrates Clio’s practicality.