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=pod
=head1 NAME
RAND_bytes, RAND_pseudo_bytes - generate random data
=head1 SYNOPSIS
#include <openssl/rand.h>
int RAND_bytes(unsigned char *buf, int num);
Deprecated:
#if OPENSSL_API_COMPAT < 0x10100000L
int RAND_pseudo_bytes(unsigned char *buf, int num);
#endif
=head1 DESCRIPTION
RAND_bytes() puts B<num> cryptographically strong pseudo-random bytes
into B<buf>. An error occurs if the PRNG has not been seeded with
enough randomness to ensure an unpredictable byte sequence.
RAND_pseudo_bytes() has been deprecated; use RAND_bytes() instead.
The contents of B<buf> is mixed into the entropy pool before retrieving
the new pseudo-random bytes unless disabled at compile time (see FAQ).
=head1 RETURN VALUES
RAND_bytes() returns 1 on success, -1 if not supported by the current
RAND method, or 0 on other failure. The error code can be
obtained by L<ERR_get_error(3)>.
=head HISTORY
RAND_pseudo_bytes() was deprecated in OpenSSL 1.1.0.
=head1 SEE ALSO
L<RAND_bytes(3)>, L<ERR_get_error(3)>,
L<RAND_add(3)>
=head1 COPYRIGHT
Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.
=cut
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