LCOV - code coverage report
Current view: top level - src/libavformat/tests - srtp.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 44 47 93.6 %
Date: 2017-05-29 12:59:06 Functions: 4 4 100.0 %

          Line data    Source code
       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         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           6 :     if (!ff_srtp_decrypt(srtp, out, &len)) {
     108           6 :         print_data(out, len);
     109           6 :         return len;
     110             :     } else
     111           0 :         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           6 :     if (!ff_srtp_decrypt(&dec, buf, &len)) {
     124           6 :         if (len == in_len && !memcmp(buf, data, len))
     125           6 :             printf("Decrypted content matches input\n");
     126             :         else
     127           0 :             printf("Decrypted content doesn't match input\n");
     128             :     } else {
     129           0 :         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             : }

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