# kek

This is a working production-quality implementation of Keccak (SHA-3)
written in pure Erlang.

**You probably want to use
[erlang-sha3](https://git.qpq.swiss/QPQ-AG/erlang-sha3)**
([alternate link](https://git.harpending.org/pharpend/erlang-sha3)),
which

- defaults to a NIF written in C
- uses the Erlang implementation from this repository as a fallback

You can use the `otpr/erlang-sha3` zomp package.

### Files

- `kek.erl` - Keccak written in "maximally straightforward" Erlang
- `kek_fast.erl` - kek.erl with some loopy routines inlined
- `rc.erl` - scratch file to compute Keccak "round constants"

### Acknowledgements

Hans Svensson provided crucial input and also wrote `kek_fast.erl`.