FFmpeg: tests/checkasm/aes.c Source File

FFmpeg

aes.c

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1 /*

2 * Copyright (c) 2015 Rodger Combs <rodger.combs@gmail.com>

3 *

4 * This file is part of FFmpeg.

5 *

6 * FFmpeg is free software; you can redistribute it and/or modify

7 * it under the terms of the GNU General Public License as published by

8 * the Free Software Foundation; either version 2 of the License, or

9 * (at your option) any later version.

10 *

11 * FFmpeg is distributed in the hope that it will be useful,

12 * but WITHOUT ANY WARRANTY; without even the implied warranty of

13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

14 * GNU General Public License for more details.

15 *

16 * You should have received a copy of the GNU General Public License along

17 * with FFmpeg; if not, write to the Free Software Foundation, Inc.,

18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

19 */

20

21 #include "checkasm.h"

22 #include "libavutil/aes.h"

23 #include "libavutil/aes_internal.h"

24 #include "libavutil/internal.h"

25

26 #define MAX_COUNT 16

27

28 void checkasm_check_aes(void)

29 {

30 int i, j, d;

31 AVAES b;

32 uint8_t pt[MAX_COUNT * 16];

33 uint8_t temp[2][MAX_COUNT * 16];

34 uint8_t iv[2][16];

35

36 for (d = 0; d <= 1; d++) {

37 for (i = 128; i <= 256; i += 64) {

38 av_aes_init(&b, (const uint8_t*)"PI=3.1415926535897932384626433..", i, d);

39 if (check_func(b.crypt, "aes_%scrypt_%i", d ? "de" : "en", i)) {

40 declare_func(void, AVAES *a, uint8_t *dst, const uint8_t *src,

41 int count, uint8_t *iv, int rounds);

42 int count = (rnd() & (MAX_COUNT - 1)) + 1;

43 for (j = 0; j < 16 * MAX_COUNT; j++)

44 pt[j] = rnd();

45 for (j = 0; j < 16; j++)

46 iv[0][j] = iv[1][j] = rnd();

47 call_ref(&b, temp[0], pt, count, iv[0], b.rounds);

48 call_new(&b, temp[1], pt, count, iv[1], b.rounds);

49 if (memcmp(temp[0], temp[1], sizeof(16 * count)))

50 fail();

51 if (memcmp(iv[0], iv[1], sizeof(iv[0])))

52 fail();

53 call_ref(&b, temp[0], pt, count, NULL, b.rounds);

54 call_new(&b, temp[1], pt, count, NULL, b.rounds);

55 if (memcmp(temp[0], temp[1], sizeof(16 * count)))

56 fail();

57 if (memcmp(iv[0], iv[1], sizeof(iv[0])))

58 fail();

59 bench_new(&b, temp[1], pt, MAX_COUNT, NULL, b.rounds);

60 }

61 }

62 report("%scrypt", d ? "de" : "en");

63 }

64 }

int av_aes_init(AVAES *a, const uint8_t *key, int key_bits, int decrypt)

Initialize an AVAES context.

Definition: aes.c:231

checkasm_check_aes

void checkasm_check_aes(void)

Definition: aes.c:28

#define check_func(func,...)

Definition: checkasm.h:198

b

#define b

Definition: input.c:42

#define call_ref(...)

Definition: checkasm.h:213

int rounds

Definition: aes_internal.h:39

#define fail()

Definition: checkasm.h:207

#define rnd()

Definition: checkasm.h:191

#define call_new(...)

Definition: checkasm.h:316

#define NULL

Definition: coverity.c:32

uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst

Definition: dsp.h:87

#define MAX_COUNT

Definition: aes.c:26

a

The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a

Definition: undefined.txt:41

int pt

Definition: rtp.c:35

#define report

Definition: checkasm.h:210

#define bench_new(...)

Definition: checkasm.h:401

i

#define i(width, name, range_min, range_max)

Definition: cbs_h2645.c:256

Definition: aes_internal.h:34

else temp

Definition: vf_mcdeint.c:271

#define declare_func(ret,...)

Definition: checkasm.h:202

#define src

Definition: vp8dsp.c:248

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