you could add twofish

[UnixJunkie]

https://github.com/mbacarella/opws/blob/master/twofish.ml

[cfcs]

For use in interactive protocols you would want the implementation to be resistant to timing attacks, something that the design of the Twofish algorithm makes notoriously hard, and especially in a pure OCaml implementation.

What is your use case for asking for Twofish inclusion?

[UnixJunkie]

No special use case. I just like that it's an open, high bit-rate, block cipher.