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.\" $OpenBSD: EVP_PKEY_new.3,v 1.7 2018/03/23 23:18:17 schwarze Exp $
.\" full merge up to: OpenSSL 99d63d42 Oct 26 13:56:48 2016 -0400
.\"
.\" This file was written by Dr. Stephen Henson <steve@openssl.org>.
.\" Copyright (c) 2002 The OpenSSL Project. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\"
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\"
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in
.\" the documentation and/or other materials provided with the
.\" distribution.
.\"
.\" 3. All advertising materials mentioning features or use of this
.\" software must display the following acknowledgment:
.\" "This product includes software developed by the OpenSSL Project
.\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
.\"
.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
.\" endorse or promote products derived from this software without
.\" prior written permission. For written permission, please contact
.\" openssl-core@openssl.org.
.\"
.\" 5. Products derived from this software may not be called "OpenSSL"
.\" nor may "OpenSSL" appear in their names without prior written
.\" permission of the OpenSSL Project.
.\"
.\" 6. Redistributions of any form whatsoever must retain the following
.\" acknowledgment:
.\" "This product includes software developed by the OpenSSL Project
.\" for use in the OpenSSL Toolkit (http://www.openssl.org/)"
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
.\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
.\" OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd $Mdocdate: March 23 2018 $
.Dt EVP_PKEY_NEW 3
.Os
.Sh NAME
.Nm EVP_PKEY_new ,
.Nm EVP_PKEY_up_ref ,
.Nm EVP_PKEY_free
.Nd private key allocation functions
.Sh SYNOPSIS
.In openssl/evp.h
.Ft EVP_PKEY *
.Fn EVP_PKEY_new void
.Ft int
.Fo EVP_PKEY_up_ref
.Fa "EVP_PKEY *key"
.Fc
.Ft void
.Fo EVP_PKEY_free
.Fa "EVP_PKEY *key"
.Fc
.Sh DESCRIPTION
The
.Vt EVP_PKEY
structure is used by various OpenSSL functions which require a general
private key without reference to any particular algorithm.
.Pp
The
.Fn EVP_PKEY_new
function allocates an empty
.Vt EVP_PKEY
structure.
The reference count is set to 1.
To add a private key to it, use the functions described in
.Xr EVP_PKEY_set1_RSA 3 .
.Pp
.Fn EVP_PKEY_up_ref
increments the reference count of
.Fa key
by 1.
.Pp
.Fn EVP_PKEY_free
decrements the reference count of
.Fa key
by 1, and if the reference count reaches zero, frees it up.
If
.Fa key
is a
.Dv NULL
pointer, no action occurs.
.Sh RETURN VALUES
.Fn EVP_PKEY_new
returns either the newly allocated
.Vt EVP_PKEY
structure or
.Dv NULL
if an error occurred.
.Pp
.Fn EVP_PKEY_up_ref
returns 1 for success or 0 for failure.
.Sh SEE ALSO
.Xr EVP_PKEY_asn1_set_free 3 ,
.Xr EVP_PKEY_set1_RSA 3
.Sh HISTORY
.Fn EVP_PKEY_new
and
.Fn EVP_PKEY_free
appeared in SSLeay 0.8.1b or earlier and have been available since
.Ox 2.4 .
.Pp
.Fn EVP_PKEY_up_ref
first appeared in OpenSSL 1.1.0 and has been available since
.Ox 6.3 .
|
