For the last 5 years, I've worked intermittently on cryptographic related packages for Haskell. Lately, I've consolidated it all in one single package. Announcing cryptonite
One of my side projects that has been running for couple of years now, was to get Cryptography up to scratch in haskell. Back when I started TLS, there were many various cryptography related projects and libraries. Many were not easy to use, none were consistent, many had performance problems.