static void
accumulator_output(struct fortuna_state *st, unsigned char *dst, size_t len)
{
/* Reseed the generator with data from pools if we have accumulated enough
* data and enough time has passed since the last accumulator reseed. */
if (st->pool0_bytes >= MIN_POOL_LEN && enough_time_passed(st))
accumulator_reseed(st);
generator_output(st, dst, len);
}
static void
extract_data(FState * st, unsigned count, unsigned char *dst)
{
unsigned n;
unsigned block_nr = 0;
pid_t pid = getpid();
/* Should we reseed? */
if (st->pool0_bytes >= POOL0_FILL || st->reseed_count == 0)
if (enough_time_passed(st))
reseed(st);
/* Do some randomization on first call */
if (!st->tricks_done)
startup_tricks(st);
/* If we forked, force a reseed again */
if (pid != st->pid) {
st->pid = pid;
reseed(st);
}
while (count > 0)
{
/* produce bytes */
encrypt_counter(st, st->result);
/* copy result */
if (count > CIPH_BLOCK)
n = CIPH_BLOCK;
else
n = count;
memcpy(dst, st->result, n);
dst += n;
count -= n;
/* must not give out too many bytes with one key */
block_nr++;
if (block_nr > (RESEED_BYTES / CIPH_BLOCK))
{
rekey(st);
block_nr = 0;
}
}
/* Set new key for next request. */
rekey(st);
}
static void extract_data(FState *st, unsigned count, uint8_t *dst)
{
unsigned n;
unsigned block_nr = 0;
/* Should we reseed? */
if (st->pool0Bytes >= pool0Fill || st->reseedCount == 0)
if (enough_time_passed(st))
reseed(st);
/* Do some randomization on first call */
if (!st->tricksDone)
startup_tricks(st);
while (count > 0) {
/* produce bytes */
encrypt_counter(st, st->result);
/* copy result */
if (count > ciphBlock)
n = ciphBlock;
else
n = count;
memmove(dst, st->result, n);
dst += n;
count -= n;
/* must not give out too many bytes with one key */
block_nr++;
if (block_nr > (reseedBytes / ciphBlock)) {
rekey(st);
block_nr = 0;
}
}
/* Set new key for next request. */
rekey(st);
}
