1 /*
2 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
25 #include "inner.h"
26
27 /*
28 * This file contains the encoded OID for the standard hash functions.
29 * Such OID appear in, for instance, the PKCS#1 v1.5 padding for RSA
30 * signatures.
31 */
32
33 static const unsigned char md5_OID[] = {
34 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x02, 0x05
35 };
36
37 static const unsigned char sha1_OID[] = {
38 0x2B, 0x0E, 0x03, 0x02, 0x1A
39 };
40
41 static const unsigned char sha224_OID[] = {
42 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x04
43 };
44
45 static const unsigned char sha256_OID[] = {
46 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01
47 };
48
49 static const unsigned char sha384_OID[] = {
50 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02
51 };
52
53 static const unsigned char sha512_OID[] = {
54 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03
55 };
56
57 /* see inner.h */
58 const unsigned char *
br_digest_OID(int digest_id,size_t * len)59 br_digest_OID(int digest_id, size_t *len)
60 {
61 switch (digest_id) {
62 case br_md5_ID:
63 *len = sizeof md5_OID;
64 return md5_OID;
65 case br_sha1_ID:
66 *len = sizeof sha1_OID;
67 return sha1_OID;
68 case br_sha224_ID:
69 *len = sizeof sha224_OID;
70 return sha224_OID;
71 case br_sha256_ID:
72 *len = sizeof sha256_OID;
73 return sha256_OID;
74 case br_sha384_ID:
75 *len = sizeof sha384_OID;
76 return sha384_OID;
77 case br_sha512_ID:
78 *len = sizeof sha512_OID;
79 return sha512_OID;
80 default:
81 *len = 0;
82 return NULL;
83 }
84 }
85