RW wrote:
On Tue, 23 Sep 2008 11:52:07 -0400
Lowell Gilbert <[EMAIL PROTECTED]> wrote:
Robert Huff <[EMAIL PROTECTED]> writes:
What is the canonical way to get data from /dev/random?
Specifically: having opened the file, how do I read the stream?
I'm currently using
union {
float f;
char c[4];
} foo;
foo.f = 0.0;
fscanf(rand_fp,"%4c",foo.c);
which doesn't seem to produce anywhere near "random bytes"
as promised by the man page.
Have you turned off the "seeded" variable? You'll fall back to a
software pseudorandom sequence if you don't.
kern.random.sys.seeded is just a flag that gets set to 1 on each
reseed. IIRC it's also initialized to 1 so it doesn't actually do
anything very useful.
Except tell you that the kernel random number generator has finished
seeding ;)
Kris
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