One comment, this:
/* get 128 random bits */
int err = px_get_random_bytes(buf, 16);
might be better to use px_get_pseudo_random_bytes(). UUIDs don't
need to be unguessable or have perfect entropy; they just need to
be collision-resistant. RFC4122 mentions this I think, and if you
look at
13.01.2014 04:35, Wim Lewis kirjoitti:
One comment, this:
/* get 128 random bits */
int err = px_get_random_bytes(buf, 16);
might be better to use px_get_pseudo_random_bytes(). UUIDs don't
need to be unguessable or have perfect entropy; they just need to
be collision-resistant. RFC4122
