int
rndtest_buf(unsigned char *buf)
{
struct rndtest_state rsp;
memset(&rsp, 0, sizeof(rsp));
rsp.rs_buf = buf;
rndtest_test(&rsp);
return(rsp.rs_discard);
}
void
rndtest_harvest(struct rndtest_state *rsp, void *buf, u_int len)
{
size_t i;
/*
* If enabled, collect data and run tests when we have enough.
*/
if (rsp->rs_collect) {
for (i = 0; i < len; i++) {
*rsp->rs_current = ((u_char *) buf)[i];
if (++rsp->rs_current == rsp->rs_end) {
rndtest_test(rsp);
rsp->rs_current = rsp->rs_begin;
/*
* If tests passed, turn off collection and
* schedule another test. Otherwise we keep
* testing until the data looks ok.
*/
if (!rsp->rs_discard && rndtest_retest != 0) {
rsp->rs_collect = 0;
callout_reset(&rsp->rs_to,
hz * rndtest_retest,
rndtest_timeout, rsp);
break;
}
}
}
}
/*
* Only stir entropy that passes muster into the pool.
*/
if (rsp->rs_discard)
rndstats.rst_discard += len;
else {
#if __FreeBSD_version < 500000
/* XXX verify buffer is word aligned */
u_int32_t *p = buf;
for (len /= sizeof (u_int32_t); len; len--)
add_true_randomness(*p++);
#else
random_harvest(buf, len, len*NBBY, 0, RANDOM_PURE);
#endif
}
}
void
rndtest_harvest(struct rndtest_state *rsp, void *buf, u_int len)
{
size_t i;
/*
* If enabled, collect data and run tests when we have enough.
*/
if (rsp->rs_collect) {
for (i = 0; i < len; i++) {
*rsp->rs_current = ((u_char *) buf)[i];
if (++rsp->rs_current == rsp->rs_end) {
rndtest_test(rsp);
rsp->rs_current = rsp->rs_begin;
/*
* If tests passed, turn off collection and
* schedule another test. Otherwise we keep
* testing until the data looks ok.
*/
if (!rsp->rs_discard && rndtest_retest != 0) {
rsp->rs_collect = 0;
callout_reset(&rsp->rs_to,
hz * rndtest_retest,
rndtest_timeout, rsp);
break;
}
}
}
}
/*
* Only stir entropy that passes muster into the pool.
*/
if (rsp->rs_discard)
rndstats.rst_discard += len;
else
/* MarkM: FIX!! Check that this does not swamp the harvester! */
random_harvest_queue(buf, len, RANDOM_PURE_RNDTEST);
}