FFmpeg  4.3
xtea.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 <stdint.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23 
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/mem.h"
26 #include "libavutil/xtea.h"
27 
28 #define XTEA_NUM_TESTS 6
29 
30 static const uint8_t xtea_test_key[XTEA_NUM_TESTS][16] = {
31  { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
32  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
33  { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
34  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
35  { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
36  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
37  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
38  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
39  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
40  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
41  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
42  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
43 };
44 
45 static const uint8_t xtea_test_pt[XTEA_NUM_TESTS][8] = {
46  { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
47  { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
48  { 0x5a, 0x5b, 0x6e, 0x27, 0x89, 0x48, 0xd7, 0x7f },
49  { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
50  { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
51  { 0x70, 0xe1, 0x22, 0x5d, 0x6e, 0x4e, 0x76, 0x55 }
52 };
53 
54 static const uint8_t xtea_test_ct[XTEA_NUM_TESTS][8] = {
55  { 0x49, 0x7d, 0xf3, 0xd0, 0x72, 0x61, 0x2c, 0xb5 },
56  { 0xe7, 0x8f, 0x2d, 0x13, 0x74, 0x43, 0x41, 0xd8 },
57  { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
58  { 0xa0, 0x39, 0x05, 0x89, 0xf8, 0xb8, 0xef, 0xa5 },
59  { 0xed, 0x23, 0x37, 0x5a, 0x82, 0x1a, 0x8c, 0x2d },
60  { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }
61 };
62 
63 static void test_xtea(AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
64  const uint8_t *ref, int len, uint8_t *iv, int dir,
65  const char *test,
66  void (*crypt)(AVXTEA *, uint8_t *, const uint8_t *, int, uint8_t *, int))
67 {
68  crypt(ctx, dst, src, len, iv, dir);
69  if (memcmp(dst, ref, 8*len)) {
70  int i;
71  printf("%s failed\ngot ", test);
72  for (i = 0; i < 8*len; i++)
73  printf("%02x ", dst[i]);
74  printf("\nexpected ");
75  for (i = 0; i < 8*len; i++)
76  printf("%02x ", ref[i]);
77  printf("\n");
78  exit(1);
79  }
80 }
81 
82 int main(void)
83 {
84  uint8_t buf[16], iv[8];
85  int i, j;
86  static const uint8_t src[32] = "HelloWorldHelloWorldHelloWorld";
87  uint8_t ct[32];
88  uint8_t pl[32];
90  if (!ctx)
91  return 1;
92 
93  for (i = 0; i < XTEA_NUM_TESTS; i++) {
95 
96  test_xtea(ctx, buf, xtea_test_pt[i], xtea_test_ct[i], 1, NULL, 0, "encryption", av_xtea_crypt);
97  test_xtea(ctx, buf, xtea_test_ct[i], xtea_test_pt[i], 1, NULL, 1, "decryption", av_xtea_crypt);
98 
99  for (j = 0; j < 4; j++)
100  AV_WL32(&buf[4*j], AV_RB32(&xtea_test_key[i][4*j]));
101  av_xtea_le_init(ctx, buf);
102  for (j = 0; j < 2; j++) {
103  AV_WL32(&ct[4*j], AV_RB32(&xtea_test_ct[i][4*j]));
104  AV_WL32(&pl[4*j], AV_RB32(&xtea_test_pt[i][4*j]));
105  }
106  test_xtea(ctx, buf, pl, ct, 1, NULL, 0, "encryption", av_xtea_le_crypt);
107  test_xtea(ctx, buf, ct, pl, 1, NULL, 1, "decryption", av_xtea_le_crypt);
108 
109  /* encrypt */
110  memcpy(iv, "HALLO123", 8);
111  av_xtea_crypt(ctx, ct, src, 4, iv, 0);
112 
113  /* decrypt into pl */
114  memcpy(iv, "HALLO123", 8);
115  test_xtea(ctx, pl, ct, src, 4, iv, 1, "CBC decryption", av_xtea_crypt);
116 
117  memcpy(iv, "HALLO123", 8);
118  test_xtea(ctx, ct, ct, src, 4, iv, 1, "CBC inplace decryption", av_xtea_crypt);
119  }
120 
121  printf("Test encryption/decryption success.\n");
122  av_free(ctx);
123 
124  return 0;
125 }
AV_WL32
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
av_xtea_crypt
void av_xtea_crypt(AVXTEA *ctx, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt)
Encrypt or decrypt a buffer using a previously initialized context, in big endian format.
Definition: xtea.c:243
XTEA_NUM_TESTS
#define XTEA_NUM_TESTS
Definition: xtea.c:28
av_xtea_init
void av_xtea_init(AVXTEA *ctx, const uint8_t key[16])
Initialize an AVXTEA context.
Definition: xtea.c:42
intreadwrite.h
ctx
AVFormatContext * ctx
Definition: movenc.c:48
NULL
#define NULL
Definition: coverity.c:32
src
#define src
Definition: vp8dsp.c:254
AV_RB32
#define AV_RB32
Definition: intreadwrite.h:130
test
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the test
Definition: fate.txt:76
printf
printf("static const uint8_t my_array[100] = {\n")
av_xtea_le_init
void av_xtea_le_init(AVXTEA *ctx, const uint8_t key[16])
Initialize an AVXTEA context.
Definition: xtea.c:50
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
xtea_test_pt
static const uint8_t xtea_test_pt[XTEA_NUM_TESTS][8]
Definition: xtea.c:45
AVXTEA
Definition: xtea.h:35
xtea_test_key
static const uint8_t xtea_test_key[XTEA_NUM_TESTS][16]
Definition: xtea.c:30
uint8_t
uint8_t
Definition: audio_convert.c:194
av_xtea_alloc
AVXTEA * av_xtea_alloc(void)
Allocate an AVXTEA context.
Definition: xtea.c:37
len
int len
Definition: vorbis_enc_data.h:452
main
int main(void)
Definition: xtea.c:82
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
mem.h
av_xtea_le_crypt
void av_xtea_le_crypt(AVXTEA *ctx, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt)
Encrypt or decrypt a buffer using a previously initialized context, in little endian format.
Definition: xtea.c:249
xtea_test_ct
static const uint8_t xtea_test_ct[XTEA_NUM_TESTS][8]
Definition: xtea.c:54
xtea.h
Public header for libavutil XTEA algorithm.
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
test_xtea
static void test_xtea(AVXTEA *ctx, uint8_t *dst, const uint8_t *src, const uint8_t *ref, int len, uint8_t *iv, int dir, const char *test, void(*crypt)(AVXTEA *, uint8_t *, const uint8_t *, int, uint8_t *, int))
Definition: xtea.c:63