FFmpeg
hmac.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "libavutil/hmac.c"
20 
21 #include <stdio.h>
22 #include <string.h>
23 
24 static void test(AVHMAC *hmac, const uint8_t *key, int keylen,
25  const uint8_t *data, int datalen)
26 {
28  int out, i;
29  // Some of the test vectors are strings, where sizeof() includes the
30  // trailing null byte - remove that.
31  if (!key[keylen - 1])
32  keylen--;
33  if (!data[datalen - 1])
34  datalen--;
35  out = av_hmac_calc(hmac, data, datalen, key, keylen, buf, sizeof(buf));
36  for (i = 0; i < out; i++)
37  printf("%02x", buf[i]);
38  printf("\n");
39 }
40 
41 int main(void)
42 {
43  uint8_t key1[20], key3[131], data3[50];
44  AVHMAC *hmac;
45  enum AVHMACType i;
46  static const uint8_t key2[] = "Jefe";
47  static const uint8_t data1[] = "Hi There";
48  static const uint8_t data2[] = "what do ya want for nothing?";
49  static const uint8_t data4[] = "Test Using Larger Than Block-Size Key - Hash Key First";
50  static const uint8_t data5[] = "Test Using Larger Than Block-Size Key and Larger Than One Block-Size Data";
51  static const uint8_t data6[] = "This is a test using a larger than block-size key and a larger "
52  "than block-size data. The key needs to be hashed before being used"
53  " by the HMAC algorithm.";
54  memset(key1, 0x0b, sizeof(key1));
55  memset(key3, 0xaa, sizeof(key3));
56  memset(data3, 0xdd, sizeof(data3));
57 
58  /* MD5, SHA-1 */
59  for (i = AV_HMAC_MD5; i <= AV_HMAC_SHA1; i++) {
60  hmac = av_hmac_alloc(i);
61  if (!hmac)
62  return 1;
63  // RFC 2202 test vectors
64  test(hmac, key1, hmac->hashlen, data1, sizeof(data1));
65  test(hmac, key2, sizeof(key2), data2, sizeof(data2));
66  test(hmac, key3, hmac->hashlen, data3, sizeof(data3));
67  test(hmac, key3, 80, data4, sizeof(data4));
68  test(hmac, key3, 80, data5, sizeof(data5));
69  av_hmac_free(hmac);
70  }
71 
72  /* SHA-2 */
73  for (i = AV_HMAC_SHA224; i <= AV_HMAC_SHA512; i++) {
74  hmac = av_hmac_alloc(i);
75  if (!hmac)
76  return 1;
77  // RFC 4231 test vectors
78  test(hmac, key1, sizeof(key1), data1, sizeof(data1));
79  test(hmac, key2, sizeof(key2), data2, sizeof(data2));
80  test(hmac, key3, 20, data3, sizeof(data3));
81  test(hmac, key3, sizeof(key3), data4, sizeof(data4));
82  test(hmac, key3, sizeof(key3), data6, sizeof(data6));
83  av_hmac_free(hmac);
84  }
85 
86  return 0;
87 }
int av_hmac_calc(AVHMAC *c, const uint8_t *data, unsigned int len, const uint8_t *key, unsigned int keylen, uint8_t *out, unsigned int outlen)
Hash an array of data with a key.
Definition: hmac.c:189
int main(void)
Definition: hmac.c:41
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:100
AVHMAC * av_hmac_alloc(enum AVHMACType type)
Allocate an AVHMAC context.
Definition: hmac.c:72
const char * key
AVHMACType
Definition: hmac.h:33
uint8_t
static void test(AVHMAC *hmac, const uint8_t *key, int keylen, const uint8_t *data, int datalen)
Definition: hmac.c:24
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
int hashlen
Definition: hmac.c:46
Definition: hmac.c:44
#define MAX_HASHLEN
Definition: hmac.c:33
void * buf
Definition: avisynth_c.h:766
void av_hmac_free(AVHMAC *c)
Free an AVHMAC context.
Definition: hmac.c:137
printf("static const uint8_t my_array[100] = {\n")
FILE * out
Definition: movenc.c:54