| 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 <stdint.h> | ||
| 20 | #include <stdio.h> | ||
| 21 | #include <string.h> | ||
| 22 | |||
| 23 | #include "libavformat/rtpdec.h" | ||
| 24 | #include "libavformat/srtp.h" | ||
| 25 | |||
| 26 | static const char *aes128_80_key = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmn"; | ||
| 27 | |||
| 28 | static const uint8_t rtp_aes128_80[] = { | ||
| 29 | // RTP header | ||
| 30 | 0x80, 0xe0, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x56, 0x78, | ||
| 31 | // encrypted payload | ||
| 32 | 0x62, 0x69, 0x76, 0xca, 0xc5, | ||
| 33 | // HMAC | ||
| 34 | 0xa1, 0xac, 0x1b, 0xb4, 0xa0, 0x1c, 0xd5, 0x49, 0x28, 0x99, | ||
| 35 | }; | ||
| 36 | |||
| 37 | static const uint8_t rtcp_aes128_80[] = { | ||
| 38 | // RTCP header | ||
| 39 | 0x81, 0xc9, 0x00, 0x07, 0x12, 0x34, 0x56, 0x78, | ||
| 40 | // encrypted payload | ||
| 41 | 0x8a, 0xac, 0xdc, 0xa5, 0x4c, 0xf6, 0x78, 0xa6, 0x62, 0x8f, 0x24, 0xda, | ||
| 42 | 0x6c, 0x09, 0x3f, 0xa9, 0x28, 0x7a, 0xb5, 0x7f, 0x1f, 0x0f, 0xc9, 0x35, | ||
| 43 | // RTCP index | ||
| 44 | 0x80, 0x00, 0x00, 0x03, | ||
| 45 | // HMAC | ||
| 46 | 0xe9, 0x3b, 0xc0, 0x5c, 0x0c, 0x06, 0x9f, 0xab, 0xc0, 0xde, | ||
| 47 | }; | ||
| 48 | |||
| 49 | static const char *aes128_32_key = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmn"; | ||
| 50 | |||
| 51 | static const uint8_t rtp_aes128_32[] = { | ||
| 52 | // RTP header | ||
| 53 | 0x80, 0xe0, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x56, 0x78, | ||
| 54 | // encrypted payload | ||
| 55 | 0x62, 0x69, 0x76, 0xca, 0xc5, | ||
| 56 | // HMAC | ||
| 57 | 0xa1, 0xac, 0x1b, 0xb4, | ||
| 58 | }; | ||
| 59 | |||
| 60 | static const uint8_t rtcp_aes128_32[] = { | ||
| 61 | // RTCP header | ||
| 62 | 0x81, 0xc9, 0x00, 0x07, 0x12, 0x34, 0x56, 0x78, | ||
| 63 | // encrypted payload | ||
| 64 | 0x35, 0xe9, 0xb5, 0xff, 0x0d, 0xd1, 0xde, 0x70, 0x74, 0x10, 0xaa, 0x1b, | ||
| 65 | 0xb2, 0x8d, 0xf0, 0x20, 0x02, 0x99, 0x6b, 0x1b, 0x0b, 0xd0, 0x47, 0x34, | ||
| 66 | // RTCP index | ||
| 67 | 0x80, 0x00, 0x00, 0x04, | ||
| 68 | // HMAC | ||
| 69 | 0x5b, 0xd2, 0xa9, 0x9d, | ||
| 70 | }; | ||
| 71 | |||
| 72 | static const char *aes128_80_32_key = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmn"; | ||
| 73 | |||
| 74 | static const uint8_t rtp_aes128_80_32[] = { | ||
| 75 | // RTP header | ||
| 76 | 0x80, 0xe0, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x56, 0x78, | ||
| 77 | // encrypted payload | ||
| 78 | 0x62, 0x69, 0x76, 0xca, 0xc5, | ||
| 79 | // HMAC | ||
| 80 | 0xa1, 0xac, 0x1b, 0xb4, | ||
| 81 | }; | ||
| 82 | |||
| 83 | static const uint8_t rtcp_aes128_80_32[] = { | ||
| 84 | // RTCP header | ||
| 85 | 0x81, 0xc9, 0x00, 0x07, 0x12, 0x34, 0x56, 0x78, | ||
| 86 | // encrypted payload | ||
| 87 | 0xd6, 0xae, 0xc1, 0x58, 0x63, 0x70, 0xc9, 0x88, 0x66, 0x26, 0x1c, 0x53, | ||
| 88 | 0xff, 0x5d, 0x5d, 0x2b, 0x0f, 0x8c, 0x72, 0x3e, 0xc9, 0x1d, 0x43, 0xf9, | ||
| 89 | // RTCP index | ||
| 90 | 0x80, 0x00, 0x00, 0x05, | ||
| 91 | // HMAC | ||
| 92 | 0x09, 0x16, 0xb4, 0x27, 0x9a, 0xe9, 0x92, 0x26, 0x4e, 0x10, | ||
| 93 | }; | ||
| 94 | |||
| 95 | 6 | static void print_data(const uint8_t *buf, int len) | |
| 96 | { | ||
| 97 | int i; | ||
| 98 |
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153 | for (i = 0; i < len; i++) |
| 99 | 147 | printf("%02x", buf[i]); | |
| 100 | 6 | printf("\n"); | |
| 101 | 6 | } | |
| 102 | |||
| 103 | 6 | static int test_decrypt(struct SRTPContext *srtp, const uint8_t *in, int len, | |
| 104 | uint8_t *out) | ||
| 105 | { | ||
| 106 | 6 | memcpy(out, in, len); | |
| 107 |
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6 | if (!ff_srtp_decrypt(srtp, out, &len)) { |
| 108 | 6 | print_data(out, len); | |
| 109 | 6 | return len; | |
| 110 | } else | ||
| 111 | ✗ | return -1; | |
| 112 | } | ||
| 113 | |||
| 114 | 6 | static void test_encrypt(const uint8_t *data, int in_len, const char *suite, | |
| 115 | const char *key) | ||
| 116 | { | ||
| 117 | 6 | struct SRTPContext enc = { 0 }, dec = { 0 }; | |
| 118 | int len; | ||
| 119 | char buf[RTP_MAX_PACKET_LENGTH]; | ||
| 120 | 6 | ff_srtp_set_crypto(&enc, suite, key); | |
| 121 | 6 | ff_srtp_set_crypto(&dec, suite, key); | |
| 122 | 6 | len = ff_srtp_encrypt(&enc, data, in_len, buf, sizeof(buf)); | |
| 123 |
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6 | if (!ff_srtp_decrypt(&dec, buf, &len)) { |
| 124 |
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6 | if (len == in_len && !memcmp(buf, data, len)) |
| 125 | 6 | printf("Decrypted content matches input\n"); | |
| 126 | else | ||
| 127 | ✗ | printf("Decrypted content doesn't match input\n"); | |
| 128 | } else { | ||
| 129 | ✗ | printf("Decryption failed\n"); | |
| 130 | } | ||
| 131 | 6 | ff_srtp_free(&enc); | |
| 132 | 6 | ff_srtp_free(&dec); | |
| 133 | 6 | } | |
| 134 | |||
| 135 | 1 | int main(void) | |
| 136 | { | ||
| 137 | static const char *aes128_80_suite = "AES_CM_128_HMAC_SHA1_80"; | ||
| 138 | static const char *aes128_32_suite = "AES_CM_128_HMAC_SHA1_32"; | ||
| 139 | static const char *aes128_80_32_suite = "SRTP_AES128_CM_HMAC_SHA1_32"; | ||
| 140 | static const char *test_key = "abcdefghijklmnopqrstuvwxyz1234567890ABCD"; | ||
| 141 | uint8_t buf[RTP_MAX_PACKET_LENGTH]; | ||
| 142 | 1 | struct SRTPContext srtp = { 0 }; | |
| 143 | int len; | ||
| 144 | 1 | ff_srtp_set_crypto(&srtp, aes128_80_suite, aes128_80_key); | |
| 145 | 1 | len = test_decrypt(&srtp, rtp_aes128_80, sizeof(rtp_aes128_80), buf); | |
| 146 | 1 | test_encrypt(buf, len, aes128_80_suite, test_key); | |
| 147 | 1 | test_encrypt(buf, len, aes128_32_suite, test_key); | |
| 148 | 1 | test_encrypt(buf, len, aes128_80_32_suite, test_key); | |
| 149 | 1 | test_decrypt(&srtp, rtcp_aes128_80, sizeof(rtcp_aes128_80), buf); | |
| 150 | 1 | test_encrypt(buf, len, aes128_80_suite, test_key); | |
| 151 | 1 | test_encrypt(buf, len, aes128_32_suite, test_key); | |
| 152 | 1 | test_encrypt(buf, len, aes128_80_32_suite, test_key); | |
| 153 | 1 | ff_srtp_free(&srtp); | |
| 154 | |||
| 155 | 1 | memset(&srtp, 0, sizeof(srtp)); // Clear the context | |
| 156 | 1 | ff_srtp_set_crypto(&srtp, aes128_32_suite, aes128_32_key); | |
| 157 | 1 | test_decrypt(&srtp, rtp_aes128_32, sizeof(rtp_aes128_32), buf); | |
| 158 | 1 | test_decrypt(&srtp, rtcp_aes128_32, sizeof(rtcp_aes128_32), buf); | |
| 159 | 1 | ff_srtp_free(&srtp); | |
| 160 | |||
| 161 | 1 | memset(&srtp, 0, sizeof(srtp)); // Clear the context | |
| 162 | 1 | ff_srtp_set_crypto(&srtp, aes128_80_32_suite, aes128_80_32_key); | |
| 163 | 1 | test_decrypt(&srtp, rtp_aes128_80_32, sizeof(rtp_aes128_80_32), buf); | |
| 164 | 1 | test_decrypt(&srtp, rtcp_aes128_80_32, sizeof(rtcp_aes128_80_32), buf); | |
| 165 | 1 | ff_srtp_free(&srtp); | |
| 166 | 1 | return 0; | |
| 167 | } | ||
| 168 |