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.\" $OpenBSD: OPENSSL_cleanse.3,v 1.3 2018/03/22 18:05:00 schwarze Exp $
.\"
.\" Copyright (c) 2016 Ingo Schwarze <schwarze@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
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: March 22 2018 $
.Dt OPENSSL_CLEANSE 3
.Os
.Sh NAME
.Nm OPENSSL_cleanse
.Nd OpenSSL memory cleaning operation
.Sh SYNOPSIS
.In openssl/crypto.h
.Ft void
.Fo OPENSSL_cleanse
.Fa "void *ptr"
.Fa "size_t len"
.Fc
.Sh DESCRIPTION
Do not use the interface documented here.
It is provided purely for compatibility with legacy application code.
.Pp
.Fn OPENSSL_cleanse
has the same semantics as, and is a wrapper around,
.Xr explicit_bzero 3 .
.Sh HISTORY
.Fn OPENSSL_cleanse
first appeared in OpenSSL 0.9.6h and has been available since
.Ox 3.4 .
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