.\"	$OpenBSD: X509_CRL_new.3,v 1.7 2018/03/27 17:35:50 schwarze Exp $
.\"
.\" Copyright (c) 2016, 2018 Ingo Schwarze <schwarze@openbsd.org>
.\"
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.\" 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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.Dd $Mdocdate: March 27 2018 $
.Dt X509_CRL_NEW 3
.Os
.Sh NAME
.Nm X509_CRL_new ,
.Nm X509_CRL_dup ,
.Nm X509_CRL_up_ref ,
.Nm X509_CRL_free ,
.Nm X509_CRL_INFO_new ,
.Nm X509_CRL_INFO_free
.Nd X.509 certificate revocation lists
.Sh SYNOPSIS
.In openssl/x509.h
.Ft X509_CRL *
.Fn X509_CRL_new void
.Ft X509_CRL *
.Fn X509_CRL_dup "X509_CRL *crl"
.Ft int
.Fn X509_CRL_up_ref "X509_CRL *crl"
.Ft void
.Fn X509_CRL_free "X509_CRL *crl"
.Ft X509_CRL_INFO *
.Fn X509_CRL_INFO_new void
.Ft void
.Fn X509_CRL_INFO_free "X509_CRL_INFO *crl_info"
.Sh DESCRIPTION
.Fn X509_CRL_new
allocates and initializes an empty
.Vt X509_CRL
object, representing an ASN.1
.Vt CertificateList
structure defined in RFC 5280 section 5.1.
It can hold a pointer to an
.Vt X509_CRL_INFO
object discussed below together with a cryptographic signature
and information about the signature algorithm used.
The reference count is set to 1.
.Pp
.Fn X509_CRL_dup
creates a deep copy of
.Fa crl .
.Pp
.Fn X509_CRL_up_ref
increments the reference count of
.Fa crl
by 1.
.Pp
.Fn X509_CRL_free
decrements the reference count of
.Fa crl
by 1.
If the reference count reaches 0, it frees
.Fa crl .
.Pp
.Fn X509_CRL_INFO_new
allocates and initializes an empty
.Vt X509_CRL_INFO
object, representing an ASN.1
.Vt TBSCertList
structure defined in RFC 5280 section 5.1.
It is used inside the
.Vt X509_CRL
object and can hold a list of revoked certificates, an issuer name,
the time the list was issued, the time when the next update of the
list is due, and optional extensions.
.Fn X509_CRL_INFO_free
frees
.Fa crl_info .
.Sh RETURN VALUES
.Fn X509_CRL_new ,
.Fn X509_CRL_dup ,
and
.Fn X509_CRL_INFO_new
return the new
.Vt X509_CRL
or
.Vt X509_CRL_INFO
object, respectively, or
.Dv NULL
if an error occurs.
.Pp
.Fn X509_CRL_up_ref
returns 1 on success or 0 on error.
.Sh SEE ALSO
.Xr ACCESS_DESCRIPTION_new 3 ,
.Xr AUTHORITY_KEYID_new 3 ,
.Xr d2i_X509_CRL 3 ,
.Xr DIST_POINT_new 3 ,
.Xr PEM_read_X509_CRL 3 ,
.Xr X509_CRL_get0_by_serial 3 ,
.Xr X509_CRL_get_ext 3 ,
.Xr X509_CRL_get_ext_d2i 3 ,
.Xr X509_CRL_get_issuer 3 ,
.Xr X509_CRL_get_version 3 ,
.Xr X509_CRL_sign 3 ,
.Xr X509_EXTENSION_new 3 ,
.Xr X509_load_crl_file 3 ,
.Xr X509_new 3 ,
.Xr X509_REVOKED_new 3 ,
.Xr X509_STORE_CTX_set0_crls 3
.Sh STANDARDS
RFC 5280: Internet X.509 Public Key Infrastructure Certificate and
Certificate Revocation List (CRL) Profile, section 5: CRL and CRL
Extensions Profile
.Sh HISTORY
.Fn X509_CRL_new ,
.Fn X509_CRL_free ,
.Fn X509_CRL_INFO_new ,
and
.Fn X509_CRL_INFO_free
first appeared in SSLeay 0.4.4.
.Fn X509_CRL_dup
first appeared in SSLeay 0.5.1.
These functions have been available since
.Ox 2.4 .
.Pp
.Fn X509_CRL_up_ref
first appeared in OpenSSL 1.1.0 and has been available since
.Ox 6.3 .