1*de0e0e4dSAntonio Huete Jimenez /* $OpenBSD: tb_pkmeth.c,v 1.6 2017/01/29 17:49:23 beck Exp $ */
2*de0e0e4dSAntonio Huete Jimenez /* ====================================================================
3*de0e0e4dSAntonio Huete Jimenez * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
4*de0e0e4dSAntonio Huete Jimenez *
5*de0e0e4dSAntonio Huete Jimenez * Redistribution and use in source and binary forms, with or without
6*de0e0e4dSAntonio Huete Jimenez * modification, are permitted provided that the following conditions
7*de0e0e4dSAntonio Huete Jimenez * are met:
8*de0e0e4dSAntonio Huete Jimenez *
9*de0e0e4dSAntonio Huete Jimenez * 1. Redistributions of source code must retain the above copyright
10*de0e0e4dSAntonio Huete Jimenez * notice, this list of conditions and the following disclaimer.
11*de0e0e4dSAntonio Huete Jimenez *
12*de0e0e4dSAntonio Huete Jimenez * 2. Redistributions in binary form must reproduce the above copyright
13*de0e0e4dSAntonio Huete Jimenez * notice, this list of conditions and the following disclaimer in
14*de0e0e4dSAntonio Huete Jimenez * the documentation and/or other materials provided with the
15*de0e0e4dSAntonio Huete Jimenez * distribution.
16*de0e0e4dSAntonio Huete Jimenez *
17*de0e0e4dSAntonio Huete Jimenez * 3. All advertising materials mentioning features or use of this
18*de0e0e4dSAntonio Huete Jimenez * software must display the following acknowledgment:
19*de0e0e4dSAntonio Huete Jimenez * "This product includes software developed by the OpenSSL Project
20*de0e0e4dSAntonio Huete Jimenez * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21*de0e0e4dSAntonio Huete Jimenez *
22*de0e0e4dSAntonio Huete Jimenez * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23*de0e0e4dSAntonio Huete Jimenez * endorse or promote products derived from this software without
24*de0e0e4dSAntonio Huete Jimenez * prior written permission. For written permission, please contact
25*de0e0e4dSAntonio Huete Jimenez * licensing@OpenSSL.org.
26*de0e0e4dSAntonio Huete Jimenez *
27*de0e0e4dSAntonio Huete Jimenez * 5. Products derived from this software may not be called "OpenSSL"
28*de0e0e4dSAntonio Huete Jimenez * nor may "OpenSSL" appear in their names without prior written
29*de0e0e4dSAntonio Huete Jimenez * permission of the OpenSSL Project.
30*de0e0e4dSAntonio Huete Jimenez *
31*de0e0e4dSAntonio Huete Jimenez * 6. Redistributions of any form whatsoever must retain the following
32*de0e0e4dSAntonio Huete Jimenez * acknowledgment:
33*de0e0e4dSAntonio Huete Jimenez * "This product includes software developed by the OpenSSL Project
34*de0e0e4dSAntonio Huete Jimenez * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35*de0e0e4dSAntonio Huete Jimenez *
36*de0e0e4dSAntonio Huete Jimenez * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37*de0e0e4dSAntonio Huete Jimenez * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38*de0e0e4dSAntonio Huete Jimenez * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39*de0e0e4dSAntonio Huete Jimenez * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40*de0e0e4dSAntonio Huete Jimenez * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41*de0e0e4dSAntonio Huete Jimenez * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42*de0e0e4dSAntonio Huete Jimenez * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43*de0e0e4dSAntonio Huete Jimenez * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44*de0e0e4dSAntonio Huete Jimenez * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45*de0e0e4dSAntonio Huete Jimenez * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46*de0e0e4dSAntonio Huete Jimenez * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47*de0e0e4dSAntonio Huete Jimenez * OF THE POSSIBILITY OF SUCH DAMAGE.
48*de0e0e4dSAntonio Huete Jimenez * ====================================================================
49*de0e0e4dSAntonio Huete Jimenez *
50*de0e0e4dSAntonio Huete Jimenez * This product includes cryptographic software written by Eric Young
51*de0e0e4dSAntonio Huete Jimenez * (eay@cryptsoft.com). This product includes software written by Tim
52*de0e0e4dSAntonio Huete Jimenez * Hudson (tjh@cryptsoft.com).
53*de0e0e4dSAntonio Huete Jimenez *
54*de0e0e4dSAntonio Huete Jimenez */
55*de0e0e4dSAntonio Huete Jimenez
56*de0e0e4dSAntonio Huete Jimenez #include <openssl/err.h>
57*de0e0e4dSAntonio Huete Jimenez
58*de0e0e4dSAntonio Huete Jimenez #include "eng_int.h"
59*de0e0e4dSAntonio Huete Jimenez #include <openssl/evp.h>
60*de0e0e4dSAntonio Huete Jimenez
61*de0e0e4dSAntonio Huete Jimenez /* If this symbol is defined then ENGINE_get_pkey_meth_engine(), the function
62*de0e0e4dSAntonio Huete Jimenez * that is used by EVP to hook in pkey_meth code and cache defaults (etc), will
63*de0e0e4dSAntonio Huete Jimenez * display brief debugging summaries to stderr with the 'nid'. */
64*de0e0e4dSAntonio Huete Jimenez /* #define ENGINE_PKEY_METH_DEBUG */
65*de0e0e4dSAntonio Huete Jimenez
66*de0e0e4dSAntonio Huete Jimenez static ENGINE_TABLE *pkey_meth_table = NULL;
67*de0e0e4dSAntonio Huete Jimenez
68*de0e0e4dSAntonio Huete Jimenez void
ENGINE_unregister_pkey_meths(ENGINE * e)69*de0e0e4dSAntonio Huete Jimenez ENGINE_unregister_pkey_meths(ENGINE *e)
70*de0e0e4dSAntonio Huete Jimenez {
71*de0e0e4dSAntonio Huete Jimenez engine_table_unregister(&pkey_meth_table, e);
72*de0e0e4dSAntonio Huete Jimenez }
73*de0e0e4dSAntonio Huete Jimenez
74*de0e0e4dSAntonio Huete Jimenez static void
engine_unregister_all_pkey_meths(void)75*de0e0e4dSAntonio Huete Jimenez engine_unregister_all_pkey_meths(void)
76*de0e0e4dSAntonio Huete Jimenez {
77*de0e0e4dSAntonio Huete Jimenez engine_table_cleanup(&pkey_meth_table);
78*de0e0e4dSAntonio Huete Jimenez }
79*de0e0e4dSAntonio Huete Jimenez
80*de0e0e4dSAntonio Huete Jimenez int
ENGINE_register_pkey_meths(ENGINE * e)81*de0e0e4dSAntonio Huete Jimenez ENGINE_register_pkey_meths(ENGINE *e)
82*de0e0e4dSAntonio Huete Jimenez {
83*de0e0e4dSAntonio Huete Jimenez if (e->pkey_meths) {
84*de0e0e4dSAntonio Huete Jimenez const int *nids;
85*de0e0e4dSAntonio Huete Jimenez int num_nids = e->pkey_meths(e, NULL, &nids, 0);
86*de0e0e4dSAntonio Huete Jimenez if (num_nids > 0)
87*de0e0e4dSAntonio Huete Jimenez return engine_table_register(&pkey_meth_table,
88*de0e0e4dSAntonio Huete Jimenez engine_unregister_all_pkey_meths, e, nids,
89*de0e0e4dSAntonio Huete Jimenez num_nids, 0);
90*de0e0e4dSAntonio Huete Jimenez }
91*de0e0e4dSAntonio Huete Jimenez return 1;
92*de0e0e4dSAntonio Huete Jimenez }
93*de0e0e4dSAntonio Huete Jimenez
94*de0e0e4dSAntonio Huete Jimenez void
ENGINE_register_all_pkey_meths(void)95*de0e0e4dSAntonio Huete Jimenez ENGINE_register_all_pkey_meths(void)
96*de0e0e4dSAntonio Huete Jimenez {
97*de0e0e4dSAntonio Huete Jimenez ENGINE *e;
98*de0e0e4dSAntonio Huete Jimenez
99*de0e0e4dSAntonio Huete Jimenez for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e))
100*de0e0e4dSAntonio Huete Jimenez ENGINE_register_pkey_meths(e);
101*de0e0e4dSAntonio Huete Jimenez }
102*de0e0e4dSAntonio Huete Jimenez
103*de0e0e4dSAntonio Huete Jimenez int
ENGINE_set_default_pkey_meths(ENGINE * e)104*de0e0e4dSAntonio Huete Jimenez ENGINE_set_default_pkey_meths(ENGINE *e)
105*de0e0e4dSAntonio Huete Jimenez {
106*de0e0e4dSAntonio Huete Jimenez if (e->pkey_meths) {
107*de0e0e4dSAntonio Huete Jimenez const int *nids;
108*de0e0e4dSAntonio Huete Jimenez int num_nids = e->pkey_meths(e, NULL, &nids, 0);
109*de0e0e4dSAntonio Huete Jimenez if (num_nids > 0)
110*de0e0e4dSAntonio Huete Jimenez return engine_table_register(&pkey_meth_table,
111*de0e0e4dSAntonio Huete Jimenez engine_unregister_all_pkey_meths, e, nids,
112*de0e0e4dSAntonio Huete Jimenez num_nids, 1);
113*de0e0e4dSAntonio Huete Jimenez }
114*de0e0e4dSAntonio Huete Jimenez return 1;
115*de0e0e4dSAntonio Huete Jimenez }
116*de0e0e4dSAntonio Huete Jimenez
117*de0e0e4dSAntonio Huete Jimenez /* Exposed API function to get a functional reference from the implementation
118*de0e0e4dSAntonio Huete Jimenez * table (ie. try to get a functional reference from the tabled structural
119*de0e0e4dSAntonio Huete Jimenez * references) for a given pkey_meth 'nid' */
120*de0e0e4dSAntonio Huete Jimenez ENGINE *
ENGINE_get_pkey_meth_engine(int nid)121*de0e0e4dSAntonio Huete Jimenez ENGINE_get_pkey_meth_engine(int nid)
122*de0e0e4dSAntonio Huete Jimenez {
123*de0e0e4dSAntonio Huete Jimenez return engine_table_select(&pkey_meth_table, nid);
124*de0e0e4dSAntonio Huete Jimenez }
125*de0e0e4dSAntonio Huete Jimenez
126*de0e0e4dSAntonio Huete Jimenez /* Obtains a pkey_meth implementation from an ENGINE functional reference */
127*de0e0e4dSAntonio Huete Jimenez const EVP_PKEY_METHOD *
ENGINE_get_pkey_meth(ENGINE * e,int nid)128*de0e0e4dSAntonio Huete Jimenez ENGINE_get_pkey_meth(ENGINE *e, int nid)
129*de0e0e4dSAntonio Huete Jimenez {
130*de0e0e4dSAntonio Huete Jimenez EVP_PKEY_METHOD *ret;
131*de0e0e4dSAntonio Huete Jimenez ENGINE_PKEY_METHS_PTR fn = ENGINE_get_pkey_meths(e);
132*de0e0e4dSAntonio Huete Jimenez
133*de0e0e4dSAntonio Huete Jimenez if (!fn || !fn(e, &ret, NULL, nid)) {
134*de0e0e4dSAntonio Huete Jimenez ENGINEerror(ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD);
135*de0e0e4dSAntonio Huete Jimenez return NULL;
136*de0e0e4dSAntonio Huete Jimenez }
137*de0e0e4dSAntonio Huete Jimenez return ret;
138*de0e0e4dSAntonio Huete Jimenez }
139*de0e0e4dSAntonio Huete Jimenez
140*de0e0e4dSAntonio Huete Jimenez /* Gets the pkey_meth callback from an ENGINE structure */
141*de0e0e4dSAntonio Huete Jimenez ENGINE_PKEY_METHS_PTR
ENGINE_get_pkey_meths(const ENGINE * e)142*de0e0e4dSAntonio Huete Jimenez ENGINE_get_pkey_meths(const ENGINE *e)
143*de0e0e4dSAntonio Huete Jimenez {
144*de0e0e4dSAntonio Huete Jimenez return e->pkey_meths;
145*de0e0e4dSAntonio Huete Jimenez }
146*de0e0e4dSAntonio Huete Jimenez
147*de0e0e4dSAntonio Huete Jimenez /* Sets the pkey_meth callback in an ENGINE structure */
148*de0e0e4dSAntonio Huete Jimenez int
ENGINE_set_pkey_meths(ENGINE * e,ENGINE_PKEY_METHS_PTR f)149*de0e0e4dSAntonio Huete Jimenez ENGINE_set_pkey_meths(ENGINE *e, ENGINE_PKEY_METHS_PTR f)
150*de0e0e4dSAntonio Huete Jimenez {
151*de0e0e4dSAntonio Huete Jimenez e->pkey_meths = f;
152*de0e0e4dSAntonio Huete Jimenez return 1;
153*de0e0e4dSAntonio Huete Jimenez }
154*de0e0e4dSAntonio Huete Jimenez
155*de0e0e4dSAntonio Huete Jimenez /* Internal function to free up EVP_PKEY_METHOD structures before an
156*de0e0e4dSAntonio Huete Jimenez * ENGINE is destroyed
157*de0e0e4dSAntonio Huete Jimenez */
158*de0e0e4dSAntonio Huete Jimenez
159*de0e0e4dSAntonio Huete Jimenez void
engine_pkey_meths_free(ENGINE * e)160*de0e0e4dSAntonio Huete Jimenez engine_pkey_meths_free(ENGINE *e)
161*de0e0e4dSAntonio Huete Jimenez {
162*de0e0e4dSAntonio Huete Jimenez int i;
163*de0e0e4dSAntonio Huete Jimenez EVP_PKEY_METHOD *pkm;
164*de0e0e4dSAntonio Huete Jimenez
165*de0e0e4dSAntonio Huete Jimenez if (e->pkey_meths) {
166*de0e0e4dSAntonio Huete Jimenez const int *pknids;
167*de0e0e4dSAntonio Huete Jimenez int npknids;
168*de0e0e4dSAntonio Huete Jimenez npknids = e->pkey_meths(e, NULL, &pknids, 0);
169*de0e0e4dSAntonio Huete Jimenez for (i = 0; i < npknids; i++) {
170*de0e0e4dSAntonio Huete Jimenez if (e->pkey_meths(e, &pkm, NULL, pknids[i])) {
171*de0e0e4dSAntonio Huete Jimenez EVP_PKEY_meth_free(pkm);
172*de0e0e4dSAntonio Huete Jimenez }
173*de0e0e4dSAntonio Huete Jimenez }
174*de0e0e4dSAntonio Huete Jimenez }
175*de0e0e4dSAntonio Huete Jimenez }
176