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.\" $OpenBSD: X509_CINF_new.3,v 1.10 2021/07/24 14:33:14 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: July 24 2021 $
.Dt X509_CINF_NEW 3
.Os
.Sh NAME
.Nm X509_CINF_new ,
.Nm X509_CINF_free ,
.Nm X509_VAL_new ,
.Nm X509_VAL_free ,
.Nm X509_CERT_AUX_new ,
.Nm X509_CERT_AUX_free
.Nd X.509 certificate information objects
.Sh SYNOPSIS
.In openssl/x509.h
.Ft X509_CINF *
.Fn X509_CINF_new void
.Ft void
.Fn X509_CINF_free "X509_CINF *inf"
.Ft X509_VAL *
.Fn X509_VAL_new void
.Ft void
.Fn X509_VAL_free "X509_VAL *val"
.Ft X509_CERT_AUX *
.Fn X509_CERT_AUX_new void
.Ft void
.Fn X509_CERT_AUX_free "X509_CERT_AUX *aux"
.Sh DESCRIPTION
.Fn X509_CINF_new
allocates and initializes an empty
.Vt X509_CINF
object, representing an ASN.1
.Vt TBSCertificate
structure defined in RFC 5280 section 4.1.
It is used inside the
.Vt X509
object and holds the main information contained in the X.509
certificate including subject, public key, issuer, serial number,
validity period, and extensions.
.Fn X509_CINF_free
frees
.Fa inf .
.Pp
.Fn X509_VAL_new
allocates and initializes an empty
.Vt X509_VAL
object, representing an ASN.1
.Vt Validity
structure defined in RFC 5280 section 4.1.
It is used inside the
.Vt X509_CINF
object and holds the validity period of the certificate.
.Fn X509_VAL_free
frees
.Fa val .
.Pp
.Fn X509_CERT_AUX_new
allocates and initializes an empty
.Vt X509_CERT_AUX
structure.
It can be used inside an
.Vt X509
object to hold optional non-standard auxiliary data appended to a
certificate, for example friendly alias names and trust data.
.Fn X509_CERT_AUX_free
frees
.Fa aux .
.Sh RETURN VALUES
.Fn X509_CINF_new ,
.Fn X509_VAL_new ,
and
.Fn X509_CERT_AUX_new
return the new
.Vt X509_CINF ,
.Vt X509_VAL ,
or
.Vt X509_CERT_AUX
object, respectively, or
.Dv NULL
if an error occurs.
.Sh SEE ALSO
.Xr d2i_X509_CINF 3 ,
.Xr X509_add1_trust_object 3 ,
.Xr X509_CERT_AUX_print 3 ,
.Xr X509_check_trust 3 ,
.Xr X509_keyid_set1 3 ,
.Xr X509_new 3
.Sh STANDARDS
RFC 5280: Internet X.509 Public Key Infrastructure Certificate and
Certificate Revocation List (CRL) Profile
.Sh HISTORY
.Fn X509_CINF_new ,
.Fn X509_CINF_free ,
.Fn X509_VAL_new ,
and
.Fn X509_VAL_free
appeared in SSLeay 0.4 or earlier and have been available since
.Ox 2.4 .
.Pp
.Fn X509_CERT_AUX_new
and
.Fn X509_CERT_AUX_free
first appeared in OpenSSL 0.9.5 and have been available since
.Ox 2.7 .
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