GENRANDOM(2) GENRANDOM(2)
NAME
genrandom, prng - random number generation
SYNOPSIS
#include <u.h>
#include <libc.h>
#include <mp.h>
#include <libsec.h>
void genrandom(uchar *buf, int nbytes)
void prng(uchar *buf, int nbytes)
DESCRIPTION
Most security software requires a source of random or, at
the very least, unguessable numbers.
Genrandom fills a buffer with bytes from the X9.17 pseudo-
random number generator. The X9.17 generator is seeded by
24 truly random bytes read from /dev/random.
Prng uses the native rand(2) pseudo-random number generator
to fill the buffer. Used with srand, this function can pro-
duce a reproducible stream of pseudo random numbers useful
in testing.
Both functions may be passed to mprand (see mp(2)).
SOURCE
/sys/src/libsec
SEE ALSO
mp(2)