This repository contains several Haskell libraries:

• The folder lol contains the Haskell library Λ ○ λ (Lol), described in the paper Λ ○ λ: Functional Lattice Cryptography. More documentation can be found on Hackage. This is the core of the project, and you'll need to install it to use anything else.

• The folder apps contains example cryptographic applications built using Lol. If you are interested in using our example applications, you will need this library. It is on Hackage here. If you are just writing your own applications, you don't need to install this library.

• The folder challenges contains code to generate and verify the (as yet unpublished) RLWE challenges. For now you can ignore this folder.

• The folder compiler contains an unmaintained, primitive FHE compiler for Lol. Eventually, this will work in conjuction with lol-apps to transform plaintext descriptions of algorithms into their homomorphic counterparts.

Installing lol:

The easiest way to install Lol is to use stack, which is included in the Haskell Platform.

> stack setup
> stack install lol

You can run unit tests with stack test lol. You can run microbenchmarks with stack bench lol. You can configure the benchmarks by editing lol/benchmarks/BenchConfig.hs.

Installing lol-apps:

> stack install lol-apps

You can run unit tests with stack test lol-apps. You can run benchmarks with stack bench lol-apps. An example of how to use each application is included and is built automatically when you install lol-apps.