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diff --git a/src/lib/libcrypto/engine/tb_digest.c b/src/lib/libcrypto/engine/tb_digest.c
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1/* ====================================================================
2 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * 3. All advertising materials mentioning features or use of this
17 * software must display the following acknowledgment:
18 * "This product includes software developed by the OpenSSL Project
19 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
20 *
21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
22 * endorse or promote products derived from this software without
23 * prior written permission. For written permission, please contact
24 * licensing@OpenSSL.org.
25 *
26 * 5. Products derived from this software may not be called "OpenSSL"
27 * nor may "OpenSSL" appear in their names without prior written
28 * permission of the OpenSSL Project.
29 *
30 * 6. Redistributions of any form whatsoever must retain the following
31 * acknowledgment:
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
34 *
35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
46 * OF THE POSSIBILITY OF SUCH DAMAGE.
47 * ====================================================================
48 *
49 * This product includes cryptographic software written by Eric Young
50 * (eay@cryptsoft.com). This product includes software written by Tim
51 * Hudson (tjh@cryptsoft.com).
52 *
53 */
54
55#include <openssl/evp.h>
56#include <openssl/engine.h>
57#include "eng_int.h"
58
59/* If this symbol is defined then ENGINE_get_digest_engine(), the function that
60 * is used by EVP to hook in digest code and cache defaults (etc), will display
61 * brief debugging summaries to stderr with the 'nid'. */
62/* #define ENGINE_DIGEST_DEBUG */
63
64static ENGINE_TABLE *digest_table = NULL;
65
66void ENGINE_unregister_digests(ENGINE *e)
67 {
68 engine_table_unregister(&digest_table, e);
69 }
70
71static void engine_unregister_all_digests(void)
72 {
73 engine_table_cleanup(&digest_table);
74 }
75
76int ENGINE_register_digests(ENGINE *e)
77 {
78 if(e->digests)
79 {
80 const int *nids;
81 int num_nids = e->digests(e, NULL, &nids, 0);
82 if(num_nids > 0)
83 return engine_table_register(&digest_table,
84 engine_unregister_all_digests, e, nids,
85 num_nids, 0);
86 }
87 return 1;
88 }
89
90void ENGINE_register_all_digests()
91 {
92 ENGINE *e;
93
94 for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
95 ENGINE_register_digests(e);
96 }
97
98int ENGINE_set_default_digests(ENGINE *e)
99 {
100 if(e->digests)
101 {
102 const int *nids;
103 int num_nids = e->digests(e, NULL, &nids, 0);
104 if(num_nids > 0)
105 return engine_table_register(&digest_table,
106 engine_unregister_all_digests, e, nids,
107 num_nids, 1);
108 }
109 return 1;
110 }
111
112/* Exposed API function to get a functional reference from the implementation
113 * table (ie. try to get a functional reference from the tabled structural
114 * references) for a given digest 'nid' */
115ENGINE *ENGINE_get_digest_engine(int nid)
116 {
117 return engine_table_select(&digest_table, nid);
118 }
119
120/* Obtains a digest implementation from an ENGINE functional reference */
121const EVP_MD *ENGINE_get_digest(ENGINE *e, int nid)
122 {
123 const EVP_MD *ret;
124 ENGINE_DIGESTS_PTR fn = ENGINE_get_digests(e);
125 if(!fn || !fn(e, &ret, NULL, nid))
126 {
127 ENGINEerr(ENGINE_F_ENGINE_GET_DIGEST,
128 ENGINE_R_UNIMPLEMENTED_DIGEST);
129 return NULL;
130 }
131 return ret;
132 }
133
134/* Gets the digest callback from an ENGINE structure */
135ENGINE_DIGESTS_PTR ENGINE_get_digests(const ENGINE *e)
136 {
137 return e->digests;
138 }
139
140/* Sets the digest callback in an ENGINE structure */
141int ENGINE_set_digests(ENGINE *e, ENGINE_DIGESTS_PTR f)
142 {
143 e->digests = f;
144 return 1;
145 }
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