1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57 #include <openssl/obj.h>
58
59 #include <stdlib.h>
60
61 #include "obj_xref.h"
62
63
nid_triple_cmp_by_sign_id(const void * in_a,const void * in_b)64 static int nid_triple_cmp_by_sign_id(const void *in_a, const void *in_b) {
65 const nid_triple *a = in_a;
66 const nid_triple *b = in_b;
67
68 return a->sign_id - b->sign_id;
69 }
70
OBJ_find_sigid_algs(int sign_nid,int * out_digest_nid,int * out_pkey_nid)71 int OBJ_find_sigid_algs(int sign_nid, int *out_digest_nid, int *out_pkey_nid) {
72 nid_triple key;
73 const nid_triple *triple;
74
75 key.sign_id = sign_nid;
76
77 triple = bsearch(&key, sigoid_srt, sizeof(sigoid_srt) / sizeof(nid_triple),
78 sizeof(nid_triple), nid_triple_cmp_by_sign_id);
79
80 if (triple == NULL) {
81 return 0;
82 }
83 if (out_digest_nid) {
84 *out_digest_nid = triple->hash_id;
85 }
86 if (out_pkey_nid) {
87 *out_pkey_nid = triple->pkey_id;
88 }
89
90 return 1;
91 }
92
nid_triple_cmp_by_digest_and_hash(const void * in_a,const void * in_b)93 static int nid_triple_cmp_by_digest_and_hash(const void *in_a,
94 const void *in_b) {
95 const nid_triple *a = *((nid_triple**) in_a);
96 const nid_triple *b = *((nid_triple**) in_b);
97
98 int ret = a->hash_id - b->hash_id;
99 if (ret) {
100 return ret;
101 }
102 return a->pkey_id - b->pkey_id;
103 }
104
OBJ_find_sigid_by_algs(int * out_sign_nid,int digest_nid,int pkey_nid)105 int OBJ_find_sigid_by_algs(int *out_sign_nid, int digest_nid, int pkey_nid) {
106 nid_triple key, *pkey;
107 const nid_triple **triple;
108
109 key.hash_id = digest_nid;
110 key.pkey_id = pkey_nid;
111 pkey = &key;
112
113 triple = bsearch(&pkey, sigoid_srt_xref,
114 sizeof(sigoid_srt_xref) / sizeof(nid_triple *),
115 sizeof(nid_triple *), nid_triple_cmp_by_digest_and_hash);
116
117 if (triple == NULL) {
118 return 0;
119 }
120 if (out_sign_nid) {
121 *out_sign_nid = (*triple)->sign_id;
122 }
123 return 1;
124 }
125