.\"	$OpenBSD: d2i_POLICYINFO.3,v 1.1 2016/12/28 20:36:33 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.
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.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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.\" 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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.Dd $Mdocdate: December 28 2016 $
.Dt D2I_POLICYINFO 3
.Os
.Sh NAME
.Nm d2i_POLICYINFO ,
.Nm i2d_POLICYINFO ,
.Nm d2i_CERTIFICATEPOLICIES ,
.Nm i2d_CERTIFICATEPOLICIES ,
.Nm d2i_POLICYQUALINFO ,
.Nm i2d_POLICYQUALINFO ,
.Nm d2i_USERNOTICE ,
.Nm i2d_USERNOTICE ,
.Nm d2i_NOTICEREF ,
.Nm i2d_NOTICEREF
.Nd decode and encode X.509 certificate policies
.Sh SYNOPSIS
.In openssl/x509v3.h
.Ft POLICYINFO *
.Fo d2i_POLICYINFO
.Fa "POLICYINFO **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fc
.Ft int
.Fo i2d_POLICYINFO
.Fa "POLICYINFO *val_in"
.Fa "unsigned char **der_out"
.Fc
.Ft CERTIFICATEPOLICIES *
.Fo d2i_CERTIFICATEPOLICIES
.Fa "CERTIFICATEPOLICIES **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fc
.Ft int
.Fo i2d_CERTIFICATEPOLICIES
.Fa "CERTIFICATEPOLICIES *val_in"
.Fa "unsigned char **der_out"
.Fc
.Ft POLICYQUALINFO *
.Fo d2i_POLICYQUALINFO
.Fa "POLICYQUALINFO **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fc
.Ft int
.Fo i2d_POLICYQUALINFO
.Fa "POLICYQUALINFO *val_in"
.Fa "unsigned char **der_out"
.Fc
.Ft USERNOTICE *
.Fo d2i_USERNOTICE
.Fa "USERNOTICE **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fc
.Ft int
.Fo i2d_USERNOTICE
.Fa "USERNOTICE *val_in"
.Fa "unsigned char **der_out"
.Fc
.Ft NOTICEREF *
.Fo d2i_NOTICEREF
.Fa "NOTICEREF **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fc
.Ft int
.Fo i2d_NOTICEREF
.Fa "NOTICEREF *val_in"
.Fa "unsigned char **der_out"
.Fc
.Sh DESCRIPTION
These functions decode and encode X.509 certificate policies.
For details about the semantics, examples, caveats, and bugs, see
.Xr ASN1_item_d2i 3 .
.Pp
.Fn d2i_POLICYINFO
and
.Fn i2d_POLICYINFO
decode and encode an ASN.1
.Vt PolicyInformation
structure defined in RFC 5280 section 4.2.1.4.
.Pp
.Fn d2i_CERTIFICATEPOLICIES
and
.Fn i2d_CERTIFICATEPOLICIES
decode and encode an ASN.1
.Vt CertificatePolicies
structure defined in RFC 5280 section 4.2.1.4.
.Pp
.Fn d2i_POLICYQUALINFO
and
.Fn i2d_POLICYQUALINFO
decode and encode an ASN.1
.Vt PolicyQualifierInfo
structure defined in RFC 5280 section 4.2.1.4.
.Pp
.Fn d2i_USERNOTICE
and
.Fn i2d_USERNOTICE
decode and encode an ASN.1
.Vt UserNotice
structure defined in RFC 5280 section 4.2.1.4.
.Pp
.Fn d2i_NOTICEREF
and
.Fn i2d_NOTICEREF
decode and encode an ASN.1
.Vt NoticeReference
structure defined in RFC 5280 section 4.2.1.4.
.Sh RETURN VALUES
.Fn d2i_POLICYINFO ,
.Fn d2i_CERTIFICATEPOLICIES ,
.Fn d2i_POLICYQUALINFO ,
.Fn d2i_USERNOTICE ,
and
.Fn d2i_NOTICEREF
return a
.Vt POLICYINFO ,
.Vt CERTIFICATEPOLICIES ,
.Vt POLICYQUALINFO ,
.Vt USERNOTICE ,
or
.Vt NOTICEREF
object, respectively, or
.Dv NULL
if an error occurs.
.Pp
.Fn i2d_POLICYINFO ,
.Fn i2d_CERTIFICATEPOLICIES ,
.Fn i2d_POLICYQUALINFO ,
.Fn i2d_USERNOTICE ,
and
.Fn i2d_NOTICEREF
return the number of bytes successfully encoded or a negative value
if an error occurs.
.Sh SEE ALSO
.Xr ASN1_item_d2i 3 ,
.Xr POLICYINFO_new 3 ,
.Xr X509_EXTENSION_new 3
.Sh STANDARDS
RFC 5280: Internet X.509 Public Key Infrastructure Certificate and
Certificate Revocation List (CRL) Profile,
section 4.2.1.4: Certificate Policies