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.\" $OpenBSD: X509_PKEY_new.3,v 1.1 2021/10/19 10:39:33 schwarze Exp $
.\"
.\" Copyright (c) 2021 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: October 19 2021 $
.Dt X509_PKEY_NEW 3
.Os
.Sh NAME
.Nm X509_PKEY_new ,
.Nm X509_PKEY_free
.Nd X.509 private key wrapper object
.Sh SYNOPSIS
.In openssl/x509.h
.Ft X509_PKEY *
.Fn X509_PKEY_new void
.Ft void
.Fn X509_PKEY_free "X509_PKEY *wrapper"
.Sh DESCRIPTION
.Vt X509_PKEY
is a reference-counted wrapper object that can store
.Bl -bullet -width 1n
.It
a pointer to an encrypted and ASN.1-encoded private key
.It
a pointer to an
.Vt EVP_PKEY
object representing the same key in decrypted form
.It
a pointer to an
.Vt X509_ALGOR
object identifying the algorithm used by the key
.El
.Pp
The object may contain only the encrypted key or only the decrypted
key or both.
.Pp
.Vt X509_PKEY
is used as a sub-object of the
.Vt X509_INFO
object created by
.Xr PEM_X509_INFO_read_bio 3
if the PEM file contains any RSA, DSA, or EC PRIVATE KEY object.
.Pp
.Fn X509_PKEY_new
allocates and initializes an empty
.Vt X509_PKEY
object and sets its reference count to 1.
.Pp
.Fn X509_PKEY_free
decrements the reference count of the
.Fa wrapper
object by 1.
If the reference count reaches 0,
it frees all internal objects allocated by the
.Fa wrapper
as well as the storage needed for the
.Fa wrapper
object itself.
If
.Fa wrapper
is a
.Dv NULL
pointer, no action occurs.
.Sh RETURN VALUES
.Fn X509_PKEY_new
returns a pointer to the new
.Vt X509_PKEY
object or
.Dv NULL
if memory allocation fails.
.Sh SEE ALSO
.Xr EVP_PKEY_new 3 ,
.Xr PEM_X509_INFO_read 3 ,
.Xr X509_INFO_new 3
.Sh HISTORY
.Fn X509_PKEY_new
and
.Fn X509_PKEY_free
first appeared in SSLeay 0.6.0 and have been available since
.Ox 2.4 .
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