| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * An implementation of the TwoFish algorithm | ||
| 3 | * Copyright (c) 2015 Supraja Meedinti | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | #include "libavutil/log.h" | ||
| 23 | #include "libavutil/mem.h" | ||
| 24 | #include "libavutil/twofish.h" | ||
| 25 | |||
| 26 | #include <stdio.h> | ||
| 27 | #include <stdlib.h> | ||
| 28 | #include <string.h> | ||
| 29 | |||
| 30 | 1 | int main(int argc, char *argv[]) | |
| 31 | { | ||
| 32 | 1 | uint8_t Key[32] = {0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff | |
| 33 | }; | ||
| 34 | 1 | const uint8_t rct[6][16] = { | |
| 35 | {0x9f, 0x58, 0x9f, 0x5c, 0xf6, 0x12, 0x2c, 0x32, 0xb6, 0xbf, 0xec, 0x2f, 0x2a, 0xe8, 0xc3, 0x5a}, | ||
| 36 | {0xcf, 0xd1, 0xd2, 0xe5, 0xa9, 0xbe, 0x9c, 0xdf, 0x50, 0x1f, 0x13, 0xb8, 0x92, 0xbd, 0x22, 0x48}, | ||
| 37 | {0x37, 0x52, 0x7b, 0xe0, 0x05, 0x23, 0x34, 0xb8, 0x9f, 0x0c, 0xfc, 0xca, 0xe8, 0x7c, 0xfa, 0x20}, | ||
| 38 | {0x5d, 0x9d, 0x4e, 0xef, 0xfa, 0x91, 0x51, 0x57, 0x55, 0x24, 0xf1, 0x15, 0x81, 0x5a, 0x12, 0xe0}, | ||
| 39 | {0xe7, 0x54, 0x49, 0x21, 0x2b, 0xee, 0xf9, 0xf4, 0xa3, 0x90, 0xbd, 0x86, 0x0a, 0x64, 0x09, 0x41}, | ||
| 40 | {0x37, 0xfe, 0x26, 0xff, 0x1c, 0xf6, 0x61, 0x75, 0xf5, 0xdd, 0xf4, 0xc3, 0x3b, 0x97, 0xa2, 0x05} | ||
| 41 | }; | ||
| 42 | 1 | uint8_t temp[32], iv[16], rpt[32] = {0}; | |
| 43 | 1 | const int kbits[3] = {128, 192, 256}; | |
| 44 | 1 | int i, j, k, err = 0; | |
| 45 | struct AVTWOFISH *cs; | ||
| 46 | 1 | cs = av_twofish_alloc(); | |
| 47 |
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1 | if (!cs) |
| 48 | ✗ | return 1; | |
| 49 |
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3 | for (j = 1; j < 3; j++) { |
| 50 | 2 | av_twofish_init(cs, Key, kbits[j]); | |
| 51 | 2 | av_twofish_crypt(cs, temp, rpt, 1, NULL, 0); | |
| 52 |
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34 | for (i = 0; i < 16; i++) { |
| 53 |
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32 | if (rct[j][i] != temp[i]) { |
| 54 | ✗ | av_log(NULL, AV_LOG_ERROR, "%d %02x %02x\n", i, rct[j][i], temp[i]); | |
| 55 | ✗ | err = 1; | |
| 56 | } | ||
| 57 | } | ||
| 58 | 2 | av_twofish_crypt(cs, temp, rct[j], 1, NULL, 1); | |
| 59 |
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34 | for (i = 0; i < 16; i++) { |
| 60 |
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32 | if (rpt[i] != temp[i]) { |
| 61 | ✗ | av_log(NULL, AV_LOG_ERROR, "%d %02x %02x\n", i, rpt[i], temp[i]); | |
| 62 | ✗ | err = 1; | |
| 63 | } | ||
| 64 | } | ||
| 65 | } | ||
| 66 |
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4 | for (j = 0; j < 3; j++) { |
| 67 | 3 | memset(Key, 0, sizeof(Key)); | |
| 68 | 3 | memset(rpt, 0, sizeof(rpt)); | |
| 69 |
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150 | for (i = 1; i < 50; i++) { |
| 70 | 147 | av_twofish_init(cs, Key, kbits[j]); | |
| 71 | 147 | av_twofish_crypt(cs, temp, rpt, 1, NULL, 0); | |
| 72 | 147 | memcpy(Key+16,Key,(kbits[j]-128) >> 3); | |
| 73 | 147 | memcpy(Key,rpt,16); | |
| 74 | 147 | memcpy(rpt,temp,16); | |
| 75 | 147 | av_twofish_crypt(cs, temp, temp, 1, NULL, 1); | |
| 76 |
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2499 | for (k = 0; k < 16; k++) { |
| 77 | // Need to compare to Key here, because the plaintext comes | ||
| 78 | // from rpt but was moved over to Key. | ||
| 79 |
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2352 | if (Key[k] != temp[k]) { |
| 80 | ✗ | av_log(NULL, AV_LOG_ERROR, "%d %02x %02x\n", k, Key[k], temp[k]); | |
| 81 | ✗ | err = 1; | |
| 82 | } | ||
| 83 | } | ||
| 84 | } | ||
| 85 |
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51 | for (i = 0; i < 16; i++) { |
| 86 |
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48 | if (rct[3 + j][i] != rpt[i]) { |
| 87 | ✗ | av_log(NULL, AV_LOG_ERROR, "%d %02x %02x\n", i, rct[3 + j][i], rpt[i]); | |
| 88 | ✗ | err = 1; | |
| 89 | } | ||
| 90 | } | ||
| 91 | } | ||
| 92 | 1 | memset(rpt, 0, sizeof(rpt)); | |
| 93 | 1 | memcpy(iv, "HALLO123HALLO123", 16); | |
| 94 | 1 | av_twofish_crypt(cs, temp, rpt, 2, iv, 0); | |
| 95 | 1 | memcpy(iv, "HALLO123HALLO123", 16); | |
| 96 | 1 | av_twofish_crypt(cs, temp, temp, 2, iv, 1); | |
| 97 |
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33 | for (i = 0; i < 32; i++) { |
| 98 |
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32 | if (rpt[i] != temp[i]) { |
| 99 | ✗ | av_log(NULL, AV_LOG_ERROR, "%d %02x %02x\n", i, rpt[i], temp[i]); | |
| 100 | ✗ | err = 1; | |
| 101 | } | ||
| 102 | } | ||
| 103 | 1 | av_free(cs); | |
| 104 | 1 | return err; | |
| 105 | } | ||
| 106 |