.\" $OpenBSD: RAND_add.3,v 1.10 2018/03/27 17:35:50 schwarze Exp $
.\" content checked up to: OpenSSL c16de9d8 Aug 31 23:16:22 2017 +0200
.\"
.\" Copyright (c) 2014 Miod Vallat <miod@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: March 27 2018 $
.Dt RAND_ADD 3
.Os
.Sh NAME
.Nm RAND_add ,
.Nm RAND_cleanup ,
.Nm RAND_poll ,
.Nm RAND_seed ,
.Nm RAND_status
.Nd manipulate the PRNG state
.Sh SYNOPSIS
.In openssl/rand.h
.Ft void
.Fo RAND_add
.Fa "const void *buf"
.Fa "int num"
.Fa "double entropy"
.Fc
.Ft void
.Fn RAND_cleanup void
.Ft int
.Fn RAND_poll void
.Ft void
.Fo RAND_seed
.Fa "const void *buf"
.Fa "int num"
.Fc
.Ft int
.Fn RAND_status void
.Sh DESCRIPTION
These functions used to allow for the state of the random number
generator to be controlled by external sources.
.Pp
They are kept for ABI compatibility but are no longer functional, and
should not be used in new programs.
.Sh RETURN VALUES
.Fn RAND_poll
and
.Fn RAND_status
always return 1.
.Sh HISTORY
.Fn RAND_cleanup
and
.Fn RAND_seed
first appeared in SSLeay 0.5.1 and have been available since
.Ox 2.4 .
.Pp
.Fn RAND_add
and
.Fn RAND_status
first appeared in OpenSSL 0.9.5 and have been available since
.Ox 2.7 .
.Pp
.Fn RAND_poll
first appeared in OpenSSL 0.9.6 and has been available since
.Ox 2.9 .