local softreq = function (...) return select(2, pcall(require, ...)); end

module "hashes"

local md5 = softreq("md5");

if md5 then

	if md5.digest then

		local md5_digest = md5.digest;

		local sha1_digest = sha1.digest;

		function _M.md5(input)

			return md5_digest(input);

		end

		function _M.sha1(input)

			return sha1_digest(input);

		end

	elseif md5.sumhexa then

		local md5_sumhexa = md5.sumhexa;

		function _M.md5(input)

			return md5_sumhexa(input);

		end

	else

		error("md5 library found, but unrecognised... no hash functions will be available", 0);

	end

end

return _M;