_ Git - BearSSL/blob - src/hash/dig_oid.c

   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 *
  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 }