5 RAND_bytes, RAND_pseudo_bytes - generate random data
9 #include <openssl/rand.h>
11 int RAND_bytes(unsigned char *buf, int num);
15 #if OPENSSL_API_COMPAT < 0x10100000L
16 int RAND_pseudo_bytes(unsigned char *buf, int num);
21 RAND_bytes() puts B<num> cryptographically strong pseudo-random bytes
22 into B<buf>. An error occurs if the PRNG has not been seeded with
23 enough randomness to ensure an unpredictable byte sequence.
27 RAND_bytes() returns 1 on success, -1 if not supported by the current
28 RAND method, or 0 on other failure. The error code can be
29 obtained by L<ERR_get_error(3)>.
33 RAND_pseudo_bytes() was deprecated in OpenSSL 1.1.0; use RAND_bytes() instead.
37 L<RAND_bytes(3)>, L<ERR_get_error(3)>,
42 Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.
44 Licensed under the OpenSSL license (the "License"). You may not use
45 this file except in compliance with the License. You can obtain a copy
46 in the file LICENSE in the source distribution or at
47 L<https://www.openssl.org/source/license.html>.