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1=pod
2
3=head1 NAME
4
5RAND - pseudo-random number generator
6
7=head1 SYNOPSIS
8
9 #include <openssl/rand.h>
10
11 int RAND_bytes(unsigned char *buf, int num);
12 int RAND_pseudo_bytes(unsigned char *buf, int num);
13
14=head1 DESCRIPTION
15
16These functions give access to the systems cryptographically secure
17pseudo-random number generator (PRNG). It is used by other library functions
18for example to generate random keys, and applications can use it when they
19need randomness.
20
21L<RAND_bytes(3)|RAND_bytes(3)> describes how to obtain random data from the
22PRNG.
23
24=head1 INTERNALS
25
26The RAND_SSLeay() method implements a PRNG based on the systems'
27L<arc4random_buf(3)> random number generator.
28
29=head1 SEE ALSO
30
31L<BN_rand(3)|BN_rand(3)>,
32L<RAND_bytes(3)|RAND_bytes(3)>
33
34=cut