RAND_bytes(3) LibreSSL RAND_bytes(3)NAME
RAND_bytes, RAND_pseudo_bytes - generate random data
SYNOPSIS
#include <openssl/rand.h>
int RAND_bytes(unsigned char *buf, int num);
int RAND_pseudo_bytes(unsigned char *buf, int num);
DESCRIPTIONRAND_bytes() puts num cryptographically strong pseudo-random bytes into
buf.
RAND_pseudo_bytes() puts num pseudo-random bytes into buf. Pseudo-
random byte sequences generated by RAND_pseudo_bytes() will be unique
if they are of sufficient length, but are not necessarily
unpredictable. They can be used for non-cryptographic purposes and for
certain purposes in cryptographic protocols, but usually not for key
generation etc.
RETURN VALUESRAND_bytes() returns 1. RAND_pseudo_bytes() returns 1.
SEE ALSOrand(3), ERR_get_error(3), RAND_add(3)HISTORYRAND_bytes() is available in all versions of SSLeay and OpenSSL. It
has a return value since OpenSSL 0.9.5. RAND_pseudo_bytes() was added
in OpenSSL 0.9.5.
LibreSSL 2015-12-05 RAND_bytes(3)
