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1.\" $OpenBSD: ENGINE_new.3,v 1.10 2023/11/19 21:13:47 tb Exp $
2.\"
3.\" Copyright (c) 2023 Theo Buehler <tb@openbsd.org>
4.\" Copyright (c) 2018 Ingo Schwarze <schwarze@openbsd.org>
5.\"
6.\" Permission to use, copy, modify, and distribute this software for any
7.\" purpose with or without fee is hereby granted, provided that the above
8.\" copyright notice and this permission notice appear in all copies.
9.\"
10.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17.\"
18.Dd $Mdocdate: November 19 2023 $
19.Dt ENGINE_NEW 3
20.Os
21.Sh NAME
22.Nm ENGINE_new ,
23.Nm ENGINE_free ,
24.Nm ENGINE_init ,
25.Nm ENGINE_finish ,
26.Nm ENGINE_ctrl_cmd ,
27.Nm ENGINE_ctrl_cmd_string ,
28.Nm ENGINE_by_id ,
29.Nm ENGINE_get_id ,
30.Nm ENGINE_get_name ,
31.Nm ENGINE_set_default ,
32.Nm ENGINE_get_default_RSA ,
33.Nm ENGINE_set_default_RSA ,
34.Nm ENGINE_load_private_key ,
35.Nm ENGINE_load_public_key ,
36.Nm ENGINE_load_builtin_engines ,
37.Nm ENGINE_load_dynamic ,
38.Nm ENGINE_load_openssl ,
39.Nm ENGINE_register_all_complete ,
40.Nm ENGINE_cleanup
41.Nd ENGINE stub functions
42.Sh SYNOPSIS
43.In openssl/engine.h
44.Ft ENGINE *
45.Fn ENGINE_new void
46.Ft int
47.Fo ENGINE_free
48.Fa "ENGINE *engine"
49.Fc
50.Ft int
51.Fn ENGINE_init "ENGINE *engine"
52.Ft int
53.Fn ENGINE_finish "ENGINE *engine"
54.Ft int
55.Fo ENGINE_ctrl_cmd
56.Fa "ENGINE *engine"
57.Fa "const char *cmd_name"
58.Fa "long i"
59.Fa "void *p"
60.Fa "void (*f)(void)"
61.Fa "int cmd_optional"
62.Fc
63.Ft int
64.Fo ENGINE_ctrl_cmd_string
65.Fa "ENGINE *engine"
66.Fa "const char *cmd_name"
67.Fa "const char *arg"
68.Fa "int cmd_optional"
69.Fc
70.Ft ENGINE *
71.Fn ENGINE_by_id "const char *id"
72.Ft const char *
73.Fn ENGINE_get_id "const ENGINE *engine"
74.Ft const char *
75.Fn ENGINE_get_name "const ENGINE *engine"
76.Ft int
77.Fn ENGINE_set_default "ENGINE *engine" "unsigned int flags"
78.Ft ENGINE *
79.Fn ENGINE_get_default_RSA "ENGINE *engine"
80.Ft int
81.Fn ENGINE_set_default_RSA "ENGINE *engine"
82.Ft EVP_PKEY *
83.Fo ENGINE_load_private_key
84.Fa "ENGINE *engine"
85.Fa "const char *key_id"
86.Fa "UI_METHOD *ui_method"
87.Fa "void *callback_data"
88.Fc
89.Ft EVP_PKEY *
90.Fo ENGINE_load_public_key
91.Fa "ENGINE *engine"
92.Fa "const char *key_id"
93.Fa "UI_METHOD *ui_method"
94.Fa "void *callback_data"
95.Fc
96.Ft void
97.Fn ENGINE_load_builtin_engines "void"
98.Ft void
99.Fn ENGINE_load_dynamic "void"
100.Ft void
101.Fn ENGINE_load_openssl "void"
102.Ft int
103.Fn ENGINE_register_all_complete "void"
104.Ft void
105.Fn ENGINE_cleanup "void"
106.Sh DESCRIPTION
107.Vt ENGINE
108objects used to provide alternative implementations of
109cryptographic algorithms, for example using specialized hardware.
110LibreSSL no longer supports this feature.
111.Pp
112All functions in this manual ignore all their arguments and
113do nothing except return failure if possible.
114They are provided only to avoid patching software that expects
115.Vt ENGINE
116support to be available.
117.Sh RETURN VALUES
118.Fn ENGINE_new ,
119.Fn ENGINE_by_id ,
120.Fn ENGINE_get_default_RSA ,
121.Fn ENGINE_load_private_key ,
122and
123.Fn ENGINE_load_public_key
124always return
125.Dv NULL .
126.Pp
127.Fn ENGINE_free ,
128.Fn ENGINE_init ,
129.Fn ENGINE_finish ,
130.Fn ENGINE_ctrl_cmd ,
131.Fn ENGINE_ctrl_cmd_string ,
132.Fn ENGINE_set_default ,
133.Fn ENGINE_set_default_RSA ,
134and
135.Fn ENGINE_register_all_complete
136always return 0.
137.Pp
138.Fn ENGINE_get_id
139and
140.Fn ENGINE_get_name
141always return the constant empty string.
142.Sh SEE ALSO
143.Xr crypto 3
144.Sh HISTORY
145.Fn ENGINE_new ,
146.Fn ENGINE_free ,
147.Fn ENGINE_init ,
148.Fn ENGINE_finish ,
149.Fn ENGINE_by_id ,
150.Fn ENGINE_get_id ,
151.Fn ENGINE_get_name ,
152.Fn ENGINE_set_default ,
153.Fn ENGINE_get_default_RSA ,
154.Fn ENGINE_set_default_RSA ,
155.Fn ENGINE_load_private_key ,
156and
157.Fn ENGINE_load_public_key
158first appeared in OpenSSL 0.9.7
159and have been available since
160.Ox 2.9 .
161.Pp
162.Fn ENGINE_ctrl_cmd ,
163.Fn ENGINE_ctrl_cmd_string ,
164.Fn ENGINE_load_builtin_engines ,
165.Fn ENGINE_load_openssl ,
166.Fn ENGINE_register_all_complete ,
167and
168.Fn ENGINE_cleanup
169first appeared in OpenSSL 0.9.7
170and have been available since
171.Ox 3.4 .
172.Pp
173All these functions were turned into stubs in
174.Ox 7.4 .
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