1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 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 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 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 } 104 105 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
