enum {
	SIPHASH_KEY_LENGTH    = 16U,
	SIPHASH_OUTPUT_LENGTH = 16U,
};

void
siphash(
	const u8                   key[SIPHASH_KEY_LENGTH],
	const size_t               inlen,
	const void *const restrict in,
	u8                         out[SIPHASH_OUTPUT_LENGTH]
);

int
siphash_main(int argc, char *argv[]);