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1.\" $OpenBSD: ASN1_OBJECT_new.3,v 1.11 2019/06/06 01:06:58 schwarze Exp $
2.\" OpenSSL 99d63d4 Mar 19 12:28:58 2016 -0400
3.\"
4.\" This file is a derived work.
5.\" The changes are covered by the following Copyright and license:
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7.\" Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
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20.\"
21.\" The original file was written by Dr. Stephen Henson.
22.\" Copyright (c) 2002, 2006 The OpenSSL Project. All rights reserved.
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68.Dd $Mdocdate: June 6 2019 $
69.Dt ASN1_OBJECT_NEW 3
70.Os
71.Sh NAME
72.Nm ASN1_OBJECT_new ,
73.Nm ASN1_OBJECT_free
74.Nd ASN.1 object identifiers
75.Sh SYNOPSIS
76.In openssl/asn1.h
77.Ft ASN1_OBJECT *
78.Fo ASN1_OBJECT_new
79.Fa void
80.Fc
81.Ft void
82.Fo ASN1_OBJECT_free
83.Fa "ASN1_OBJECT *a"
84.Fc
85.Sh DESCRIPTION
86.Fn ASN1_OBJECT_new
87allocates and initializes an empty
88.Vt ASN1_OBJECT
89object, representing an ASN.1 OBJECT IDENTIFIER.
90It can hold a short name, a long name, a numeric identifier (NID),
91and a sequence of integers identifying a node in the International
92Object Identifier tree as specified in ITU-T recommendation X.660.
93The new object is marked as dynamically allocated.
94.Pp
95Application programs normally use utility functions like
96.Xr OBJ_nid2obj 3
97rather than using
98.Fn ASN1_OBJECT_new
99directly.
100.Pp
101.Fn ASN1_OBJECT_free
102has the following effects:
103.Pp
104All data contained in
105.Fa a
106that is marked as dynamically allocated is freed,
107and the respective fields of
108.Fa a
109become empty.
110Contained data not marked as dynamically allocated remains intact.
111.Pp
112If the object
113.Fa a
114itself is marked as dynamically allocated, it is freed.
115Otherwise, the pointer
116.Fa a
117remains valid.
118.Pp
119If
120.Fa a
121is a
122.Dv NULL
123pointer or if neither the object itself nor any of its content
124is marked as dynamically allocated, no action occurs.
125.Sh RETURN VALUES
126If the allocation fails,
127.Fn ASN1_OBJECT_new
128returns
129.Dv NULL
130and sets an error code that can be obtained by
131.Xr ERR_get_error 3 .
132Otherwise it returns a pointer to the new object.
133.Sh SEE ALSO
134.Xr ASN1_TYPE_get 3 ,
135.Xr d2i_ASN1_OBJECT 3 ,
136.Xr OBJ_nid2obj 3
137.Sh HISTORY
138.Fn ASN1_OBJECT_new
139and
140.Fn ASN1_OBJECT_free
141first appeared in SSLeay 0.5.1 and have been available since
142.Ox 2.4 .
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