ocp-sha
Pure OCaml implementation of SHA256 and SHA512
OTHER License
ocp-SHA
Yet another implementation of the SHA256 and SHA512 hashing algorithms. This is pure OCaml code, directly following the specification, and quick experiments have shown it to be within a factor 10 of openssl, performance-wise. This may be an acceptable compromise for many applications if you want to avoid linking C code or calling external tools.
The implementation relies on bigarrays to minimise the number of in-memory copies of the data to hash. The only entry point provided applies to a file name, but others wouldn't be difficult to add: feel free to contribute if you need them. SHA384 isn't included but would be trivial to add, as it is almost identical to SHA512.
There are no dependencies besides the standard libs unix and bigarray.
Copyright 2016 OCamlPro. ocp-SHA is distributed under the terms of the GNU Lesser General Public License version 2.1, with the special exception on linking describted in the file LICENSE.