| Line | Branch | Exec | Source |
|---|---|---|---|
| 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 <string.h> | ||
| 20 | |||
| 21 | #include "libavutil/random_seed.h" | ||
| 22 | #include "libavutil/lfg.h" | ||
| 23 | #include "libavutil/log.h" | ||
| 24 | #include "libavutil/mem_internal.h" | ||
| 25 | #include "libavutil/aes_ctr.h" | ||
| 26 | |||
| 27 | static const DECLARE_ALIGNED(8, uint8_t, plain)[] = { | ||
| 28 | 0x6d, 0x6f, 0x73, 0x74, 0x20, 0x72, 0x61, 0x6e, 0x64, 0x6f, | ||
| 29 | 0x6d, 0x6f, 0x73, 0x74, 0x20, 0x72, 0x61, 0x6e, 0x64, 0x6f, | ||
| 30 | 0x6d, 0x6f, 0x73, 0x74, 0x20, 0x72, 0x61, 0x6e, 0x64, 0x6f, | ||
| 31 | 0x6d, 0x6f, 0x73, 0x74, 0x20, 0x72, 0x61, 0x6e, 0x64, 0x6f | ||
| 32 | }; | ||
| 33 | |||
| 34 | static const DECLARE_ALIGNED(8, uint8_t, encrypted)[] = { | ||
| 35 | 0x95, 0xcd, 0x9a, 0x8a, 0x83, 0xa2, 0x1a, 0x84, 0x92, 0xed, | ||
| 36 | 0xd6, 0xf2, 0x57, 0x2f, 0x61, 0x98, 0xbc, 0x20, 0x98, 0xee, | ||
| 37 | 0x6c, 0xed, 0x53, 0xae, 0x2f, 0xc4, 0x18, 0x7c, 0xeb, 0x62, | ||
| 38 | 0xbb, 0x3a, 0x71, 0x24, 0x22, 0x8c, 0xd9, 0xfa, 0xee, 0x10 | ||
| 39 | }; | ||
| 40 | |||
| 41 | static const DECLARE_ALIGNED(8, uint8_t, fixed_iv)[] = { | ||
| 42 | 0xde, 0xad, 0xbe, 0xef, 0xde, 0xad, 0xbe, 0xef | ||
| 43 | }; | ||
| 44 | |||
| 45 | static const DECLARE_ALIGNED(8, uint8_t, fixed_key)[] = { | ||
| 46 | 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, | ||
| 47 | 0x38, 0x39, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66 | ||
| 48 | }; | ||
| 49 | |||
| 50 | static DECLARE_ALIGNED(8, uint32_t, key)[4]; | ||
| 51 | |||
| 52 | static DECLARE_ALIGNED(8, uint8_t, tmp)[40]; | ||
| 53 | |||
| 54 | 1 | int main (void) | |
| 55 | { | ||
| 56 | 1 | int ret = 1; | |
| 57 | AVLFG lfg; | ||
| 58 | struct AVAESCTR *ae, *ad; | ||
| 59 | const uint8_t *iv, *k; | ||
| 60 | |||
| 61 | 1 | av_lfg_init(&lfg, av_get_random_seed()); | |
| 62 | |||
| 63 |
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3 | for (int i = 0; i < 2; i++) { |
| 64 | 2 | ae = av_aes_ctr_alloc(); | |
| 65 | 2 | ad = av_aes_ctr_alloc(); | |
| 66 | |||
| 67 |
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2 | if (!ae || !ad) |
| 68 | ✗ | goto ERROR; | |
| 69 | |||
| 70 |
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2 | if (i) |
| 71 | 1 | k = fixed_key; | |
| 72 | else { | ||
| 73 | // Note: av_random_bytes() should be used in a real world scenario, | ||
| 74 | // but since that function can fail, av_get_random_seed() is used | ||
| 75 | // here for the purpose of this test, as its output is sufficient. | ||
| 76 | 1 | key[0] = av_get_random_seed(); | |
| 77 | 1 | key[1] = av_get_random_seed(); | |
| 78 | 1 | key[2] = av_get_random_seed(); | |
| 79 | 1 | key[3] = av_get_random_seed(); | |
| 80 | 1 | k = (uint8_t *)key; | |
| 81 | } | ||
| 82 | |||
| 83 |
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2 | if (av_aes_ctr_init(ae, k) < 0) |
| 84 | ✗ | goto ERROR; | |
| 85 | |||
| 86 |
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2 | if (av_aes_ctr_init(ad, k) < 0) |
| 87 | ✗ | goto ERROR; | |
| 88 | |||
| 89 |
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2 | if (i) |
| 90 | 1 | av_aes_ctr_set_iv(ae, fixed_iv); | |
| 91 | else | ||
| 92 | 1 | av_aes_ctr_set_random_iv(ae); | |
| 93 | 2 | iv = av_aes_ctr_get_iv(ae); | |
| 94 | 2 | av_aes_ctr_set_full_iv(ad, iv); | |
| 95 | |||
| 96 | 2 | uint8_t *dst = tmp; | |
| 97 | 2 | const uint8_t *src = plain; | |
| 98 | 2 | int left = sizeof(plain); | |
| 99 |
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9 | while (left > 0) { |
| 100 | 7 | int count = (av_lfg_get(&lfg) % left) + 1; | |
| 101 | 7 | av_aes_ctr_crypt(ae, dst, src, count); | |
| 102 | 7 | dst += count; | |
| 103 | 7 | src += count; | |
| 104 | 7 | left -= count; | |
| 105 | } | ||
| 106 |
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2 | if (i && memcmp(tmp, encrypted, sizeof(tmp)) != 0) { |
| 107 | ✗ | av_log(NULL, AV_LOG_ERROR, "test failed\n"); | |
| 108 | ✗ | goto ERROR; | |
| 109 | } | ||
| 110 | |||
| 111 | 2 | dst = tmp; | |
| 112 | 2 | left = sizeof(plain); | |
| 113 |
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12 | while (left > 0) { |
| 114 | 10 | int count = (av_lfg_get(&lfg) % left) + 1; | |
| 115 | 10 | av_aes_ctr_crypt(ad, dst, dst, count); | |
| 116 | 10 | dst += count; | |
| 117 | 10 | left -= count; | |
| 118 | } | ||
| 119 | |||
| 120 |
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2 | if (memcmp(tmp, plain, sizeof(tmp)) != 0){ |
| 121 | ✗ | av_log(NULL, AV_LOG_ERROR, "test failed\n"); | |
| 122 | ✗ | goto ERROR; | |
| 123 | } | ||
| 124 | |||
| 125 | 2 | av_aes_ctr_free(ae); | |
| 126 | 2 | av_aes_ctr_free(ad); | |
| 127 | 2 | ae = ad = NULL; | |
| 128 | } | ||
| 129 | |||
| 130 | 1 | av_log(NULL, AV_LOG_INFO, "test passed\n"); | |
| 131 | 1 | ret = 0; | |
| 132 | |||
| 133 | 1 | ERROR: | |
| 134 | 1 | av_aes_ctr_free(ae); | |
| 135 | 1 | av_aes_ctr_free(ad); | |
| 136 | 1 | return ret; | |
| 137 | } | ||
| 138 |