FFmpeg: libavutil/tests/aes_ctr.c Source File

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aes_ctr.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 */

19 #include <string.h>

21 #include "libavutil/log.h"

22 #include "libavutil/mem_internal.h"

23 #include "libavutil/aes_ctr.h"

25 static const DECLARE_ALIGNED(8, uint8_t, plain)[] = {

26 0x6d, 0x6f, 0x73, 0x74, 0x20, 0x72, 0x61, 0x6e, 0x64, 0x6f, 0x6d

27 };

28 static DECLARE_ALIGNED(8, uint8_t, tmp)[11];

30 int main (void)

31 {

32 int ret = 1;

33 struct AVAESCTR *ae, *ad;

34 const uint8_t *iv;

36 ae = av_aes_ctr_alloc();

37 ad = av_aes_ctr_alloc();

39 if (!ae || !ad)

40 goto ERROR;

42 if (av_aes_ctr_init(ae, (const uint8_t*)"0123456789abcdef") < 0)

43 goto ERROR;

45 if (av_aes_ctr_init(ad, (const uint8_t*)"0123456789abcdef") < 0)

46 goto ERROR;

48 av_aes_ctr_set_random_iv(ae);

49 iv = av_aes_ctr_get_iv(ae);

50 av_aes_ctr_set_full_iv(ad, iv);

52 av_aes_ctr_crypt(ae, tmp, plain, sizeof(tmp));

53 av_aes_ctr_crypt(ad, tmp, tmp, sizeof(tmp));

55 if (memcmp(tmp, plain, sizeof(tmp)) != 0){

56 av_log(NULL, AV_LOG_ERROR, "test failed\n");

57 goto ERROR;

58 }

60 av_log(NULL, AV_LOG_INFO, "test passed\n");

61 ret = 0;

63 ERROR:

64 av_aes_ctr_free(ae);

65 av_aes_ctr_free(ad);

66 return ret;

67 }

mem_internal.h

tmp

static uint8_t tmp[11]

Definition: aes_ctr.c:28

av_aes_ctr_set_random_iv

void av_aes_ctr_set_random_iv(struct AVAESCTR *a)

Generate a random iv.

Definition: aes_ctr.c:63

AV_LOG_ERROR

#define AV_LOG_ERROR

Something went wrong and cannot losslessly be recovered.

Definition: log.h:180

av_aes_ctr_get_iv

const uint8_t * av_aes_ctr_get_iv(struct AVAESCTR *a)

Get the current iv.

Definition: aes_ctr.c:58

NULL

#define NULL

Definition: coverity.c:32

ERROR

static void ERROR(const char *str)

Definition: audio_fifo.c:58

av_aes_ctr_alloc

struct AVAESCTR * av_aes_ctr_alloc(void)

Allocate an AVAESCTR context.

Definition: aes_ctr.c:40

main

int main(void)

Definition: aes_ctr.c:30

av_aes_ctr_init

int av_aes_ctr_init(struct AVAESCTR *a, const uint8_t *key)

Initialize an AVAESCTR context.

Definition: aes_ctr.c:73

DECLARE_ALIGNED

#define DECLARE_ALIGNED(n, t, v)

Definition: mem_internal.h:87

av_aes_ctr_set_full_iv

void av_aes_ctr_set_full_iv(struct AVAESCTR *a, const uint8_t *iv)

Forcefully change the "full" 16-byte iv, including the counter.

Definition: aes_ctr.c:52

aes_ctr.h

AV_LOG_INFO

#define AV_LOG_INFO

Standard information.

Definition: log.h:191

av_aes_ctr_free

void av_aes_ctr_free(struct AVAESCTR *a)

Release an AVAESCTR context.

Definition: aes_ctr.c:83

log.h

plain

static const uint8_t plain[]

Definition: aes_ctr.c:25

ret

Definition: filter_design.txt:187

av_aes_ctr_crypt

void av_aes_ctr_crypt(struct AVAESCTR *a, uint8_t *dst, const uint8_t *src, int count)

Process a buffer using a previously initialized context.

Definition: aes_ctr.c:107

av_log

#define av_log(a,...)

Definition: tableprint_vlc.h:27

AVAESCTR

Definition: aes_ctr.c:33

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