/*
* srtp_driver . c
*
* a test driver for libSRTP
*
* David A . McGrew
* Cisco Systems , Inc .
*/
/*
*
* Copyright ( c ) 2001 - 2017 , Cisco Systems , Inc .
* All rights reserved .
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
*
* Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
*
* Redistributions in binary form must reproduce the above
* copyright notice , this list of conditions and the following
* disclaimer in the documentation and / or other materials provided
* with the distribution .
*
* Neither the name of the Cisco Systems , Inc . nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission .
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* " AS IS " AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT
* LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL THE
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT ,
* INDIRECT , INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL DAMAGES
* ( INCLUDING , BUT NOT LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES ; LOSS OF USE , DATA , OR PROFITS ; OR BUSINESS INTERRUPTION )
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT ,
* STRICT LIABILITY , OR TORT ( INCLUDING NEGLIGENCE OR OTHERWISE )
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE , EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE .
*
*/
#include <string.h> /* for memcpy() */
#include <time.h> /* for clock() */
#include <stdlib.h> /* for malloc(), free() */
#include <stdio.h> /* for print(), fflush() */
#include "getopt_s.h" /* for local getopt() */
#include "srtp_priv.h"
#include "stream_list_priv.h"
#include "util.h"
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#elif defined HAVE_WINSOCK2_H
#include <winsock2.h>
#endif
#define PRINT_REFERENCE_PACKET 1
srtp_err_status_t srtp_validate(void );
srtp_err_status_t srtp_validate_null_sha1_80(void );
srtp_err_status_t srtp_validate_null_null(void );
srtp_err_status_t srtp_validate_cryptex(void );
#ifdef GCM
srtp_err_status_t srtp_validate_gcm(void );
srtp_err_status_t srtp_validate_gcm_cryptex(void );
#endif
srtp_err_status_t srtp_validate_encrypted_extensions_headers(void );
#ifdef GCM
srtp_err_status_t srtp_validate_encrypted_extensions_headers_gcm(void );
#endif
srtp_err_status_t srtp_validate_aes_256(void );
#ifdef GCM
srtp_err_status_t srtp_validate_aes_192(void );
#endif
srtp_err_status_t srtp_create_big_policy(srtp_policy_t **list);
srtp_err_status_t srtp_dealloc_big_policy(srtp_policy_t *list);
srtp_err_status_t srtp_test_empty_payload(void );
#ifdef GCM
srtp_err_status_t srtp_test_empty_payload_gcm(void );
#endif
srtp_err_status_t srtp_test_remove_stream(void );
srtp_err_status_t srtp_test_update(void );
srtp_err_status_t srtp_test_protect_trailer_length(void );
srtp_err_status_t srtp_test_protect_rtcp_trailer_length(void );
srtp_err_status_t srtp_test_out_of_order_after_rollover(void );
srtp_err_status_t srtp_test_get_roc(void );
srtp_err_status_t srtp_test_set_receiver_roc(void );
srtp_err_status_t srtp_test_set_sender_roc(void );
srtp_err_status_t srtp_test_cryptex_csrc_but_no_extension_header(void );
srtp_err_status_t srtp_test_cryptex_disable(void );
double srtp_bits_per_second(int msg_len_octets, const srtp_policy_t *policy);
double srtp_rejections_per_second(int msg_len_octets,
const srtp_policy_t *policy);
void srtp_do_timing(const srtp_policy_t *policy);
void srtp_do_rejection_timing(const srtp_policy_t *policy);
srtp_err_status_t srtp_test(const srtp_policy_t *policy,
int extension_header,
int mki_index);
srtp_err_status_t srtcp_test(const srtp_policy_t *policy, int mki_index);
srtp_err_status_t srtp_session_print_policy(srtp_t srtp);
srtp_err_status_t srtp_print_policy(const srtp_policy_t *policy);
char *srtp_packet_to_string(srtp_hdr_t *hdr, int packet_len);
char *srtp_rtcp_packet_to_string(srtcp_hdr_t *hdr, int pkt_octet_len);
double mips_estimate(int num_trials, int *ignore);
srtp_err_status_t srtp_stream_list_test(void );
#define TEST_MKI_ID_SIZE 4
typedef struct test_vectors_t {
const char *name;
char *plaintext;
char *ciphertext;
} test_vectors_t;
extern uint8_t test_key[46 ];
extern uint8_t test_key_2[46 ];
extern uint8_t test_mki_id[TEST_MKI_ID_SIZE];
extern uint8_t test_mki_id_2[TEST_MKI_ID_SIZE];
extern uint8_t test_key_gcm[28 ];
// clang-format off
srtp_master_key_t master_key_1 = {
test_key,
test_mki_id,
TEST_MKI_ID_SIZE
};
srtp_master_key_t master_key_2 = {
test_key_2,
test_mki_id_2,
TEST_MKI_ID_SIZE
};
srtp_master_key_t *test_keys[2 ] = {
&master_key_1,
&master_key_2
};
// clang-format on
void usage(char *prog_name)
{
printf(
"usage: %s [ -t ][ -c ][ -v ][ -s ][ -o ][-d <debug_module> ]* [ -l ]\n"
" -t run timing test\n"
" -r run rejection timing test\n"
" -c run codec timing test\n"
" -v run validation tests\n"
" -s run stream list tests only\n"
" -o output logging to stdout\n"
" -d <mod> turn on debugging module <mod>\n"
" -l list debugging modules\n" ,
prog_name);
exit (1 );
}
void log_handler(srtp_log_level_t level, const char *msg, void *data)
{
char level_char = '?' ;
(void )data;
switch (level) {
case srtp_log_level_error:
level_char = 'e' ;
break ;
case srtp_log_level_warning:
level_char = 'w' ;
break ;
case srtp_log_level_info:
level_char = 'i' ;
break ;
case srtp_log_level_debug:
level_char = 'd' ;
break ;
}
printf("SRTP-LOG [%c]: %s\n" , level_char, msg);
}
/*
* The policy_array and invalid_policy_array are null - terminated arrays of
* policy structs . They is declared at the end of this file .
*/
extern const srtp_policy_t *policy_array[];
extern const srtp_policy_t *invalid_policy_array[];
/* the wildcard_policy is declared below; it has a wildcard ssrc */
extern const srtp_policy_t wildcard_policy;
/*
* mod_driver debug module - debugging module for this test driver
*
* we use the crypto_kernel debugging system in this driver , which
* makes the interface uniform and increases portability
*/
srtp_debug_module_t mod_driver = {
0 , /* debugging is off by default */
"driver" /* printable name for module */
};
int main(int argc, char *argv[])
{
int q;
unsigned do_timing_test = 0 ;
unsigned do_rejection_test = 0 ;
unsigned do_codec_timing = 0 ;
unsigned do_validation = 0 ;
unsigned do_stream_list = 0 ;
unsigned do_list_mods = 0 ;
unsigned do_log_stdout = 0 ;
srtp_err_status_t status;
const size_t hdr_size = 12 ;
/*
* verify that the compiler has interpreted the header data
* structure srtp_hdr_t correctly
*/
if (sizeof (srtp_hdr_t) != hdr_size) {
printf("error: srtp_hdr_t has incorrect size"
"(size is %ld bytes, expected %ld)\n" ,
(long )sizeof (srtp_hdr_t), (long )hdr_size);
exit (1 );
}
/* initialize srtp library */
status = srtp_init();
if (status) {
printf("error: srtp init failed with error code %d\n" , status);
exit (1 );
}
/* load srtp_driver debug module */
status = srtp_crypto_kernel_load_debug_module(&mod_driver);
if (status) {
printf("error: load of srtp_driver debug module failed "
"with error code %d\n" ,
status);
exit (1 );
}
/* process input arguments */
while (1 ) {
q = getopt_s(argc, argv, "trcvsold:" );
if (q == -1 ) {
break ;
}
switch (q) {
case 't' :
do_timing_test = 1 ;
break ;
case 'r' :
do_rejection_test = 1 ;
break ;
case 'c' :
do_codec_timing = 1 ;
break ;
case 'v' :
do_validation = 1 ;
do_stream_list = 1 ;
break ;
case 's' :
do_stream_list = 1 ;
break ;
case 'o' :
do_log_stdout = 1 ;
break ;
case 'l' :
do_list_mods = 1 ;
break ;
case 'd' :
status = srtp_set_debug_module(optarg_s, 1 );
if (status) {
printf("error: set debug module (%s) failed\n" , optarg_s);
exit (1 );
}
break ;
default :
usage(argv[0 ]);
}
}
if (!do_validation && !do_timing_test && !do_codec_timing &&
!do_list_mods && !do_rejection_test && !do_stream_list) {
usage(argv[0 ]);
}
if (do_log_stdout) {
status = srtp_install_log_handler(log_handler, NULL);
if (status) {
printf("error: install log handler failed\n" );
exit (1 );
}
}
if (do_list_mods) {
status = srtp_list_debug_modules();
if (status) {
printf("error: list of debug modules failed\n" );
exit (1 );
}
}
if (do_validation) {
const srtp_policy_t **policy = policy_array;
srtp_policy_t *big_policy;
srtp_t srtp_sender;
/* loop over policy array, testing srtp and srtcp for each policy */
while (*policy != NULL) {
printf("testing srtp_protect and srtp_unprotect\n" );
if (srtp_test(*policy, 0 , -1 ) == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_protect and srtp_unprotect with encrypted "
"extensions headers\n" );
if (srtp_test(*policy, 1 , -1 ) == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_protect_rtcp and srtp_unprotect_rtcp\n" );
if (srtcp_test(*policy, -1 ) == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_protect_rtp and srtp_unprotect_rtp with MKI "
"index set to 0\n" );
if (srtp_test(*policy, 0 , 0 ) == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_protect_rtp and srtp_unprotect_rtp with MKI "
"index set to 1\n" );
if (srtp_test(*policy, 0 , 1 ) == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_protect_rtcp and srtp_unprotect_rtcp with MKI "
"index set to 0\n" );
if (srtcp_test(*policy, 0 ) == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_protect_rtcp and srtp_unprotect_rtcp with MKI "
"index set to 1\n" );
if (srtcp_test(*policy, 1 ) == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
policy++;
}
/* loop over invalid policy array, testing that an SRTP context cannot
* be created with the policy */
policy = invalid_policy_array;
while (*policy != NULL) {
printf("testing srtp_create fails with invalid policy\n" );
if (srtp_create(&srtp_sender, *policy) != srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
policy++;
}
/* create a big policy list and run tests on it */
status = srtp_create_big_policy(&big_policy);
if (status) {
printf("unexpected failure with error code %d\n" , status);
exit (1 );
}
printf("testing srtp_protect and srtp_unprotect with big policy\n" );
if (srtp_test(big_policy, 0 , -1 ) == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_protect and srtp_unprotect with big policy and "
"encrypted extensions headers\n" );
if (srtp_test(big_policy, 1 , -1 ) == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
status = srtp_dealloc_big_policy(big_policy);
if (status) {
printf("unexpected failure with error code %d\n" , status);
exit (1 );
}
/* run test on wildcard policy */
printf("testing srtp_protect and srtp_unprotect on "
"wildcard ssrc policy\n" );
if (srtp_test(&wildcard_policy, 0 , -1 ) == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_protect and srtp_unprotect on "
"wildcard ssrc policy and encrypted extensions headers\n" );
if (srtp_test(&wildcard_policy, 1 , -1 ) == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
/*
* run validation test against the reference packets - note
* that this test only covers the default policy
*/
printf("testing srtp_protect and srtp_unprotect against "
"reference packet\n" );
if (srtp_validate() == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_protect and srtp_unprotect against "
"reference packet using null cipher and SHA1-80 HMAC\n" );
if (srtp_validate_null_sha1_80() == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_protect and srtp_unprotect against "
"reference packet using null cipher and null HMAC\n" );
if (srtp_validate_null_null() == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_protect and srtp_unprotect against "
"reference cryptex packet\n" );
if (srtp_validate_cryptex() == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
#ifdef GCM
printf("testing srtp_protect and srtp_unprotect against "
"reference packet using GCM\n" );
if (srtp_validate_gcm() == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_protect and srtp_unprotect against "
"reference cryptex packet using GCM\n" );
if (srtp_validate_gcm_cryptex() == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
#endif
printf("testing srtp_protect and srtp_unprotect against "
"reference packet with encrypted extensions headers\n" );
if (srtp_validate_encrypted_extensions_headers() == srtp_err_status_ok)
printf("passed\n\n" );
else {
printf("failed\n" );
exit (1 );
}
#ifdef GCM
printf("testing srtp_protect and srtp_unprotect against "
"reference packet with encrypted extension headers (GCM)\n" );
if (srtp_validate_encrypted_extensions_headers_gcm() ==
srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
#endif
#ifdef GCM
/*
* run validation test against the reference packets for
* AES - 192
*/
printf("testing srtp_protect and srtp_unprotect against "
"reference packet (AES-192)\n" );
if (srtp_validate_aes_192() == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
#endif
/*
* run validation test against the reference packets for
* AES - 256
*/
printf("testing srtp_protect and srtp_unprotect against "
"reference packet (AES-256)\n" );
if (srtp_validate_aes_256() == srtp_err_status_ok) {
printf("passed\n\n" );
} else {
printf("failed\n" );
exit (1 );
}
/*
* test packets with empty payload
*/
printf("testing srtp_protect and srtp_unprotect against "
"packet with empty payload\n" );
if (srtp_test_empty_payload() == srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
#ifdef GCM
printf("testing srtp_protect and srtp_unprotect against "
"packet with empty payload (GCM)\n" );
if (srtp_test_empty_payload_gcm() == srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
#endif
/*
* test the function srtp_remove_stream ( )
*/
printf("testing srtp_remove_stream()..." );
if (srtp_test_remove_stream() == srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
/*
* test the function srtp_update ( )
*/
printf("testing srtp_update()..." );
if (srtp_test_update() == srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
/*
* test the functions srtp_get_protect_trailer_length
* and srtp_get_protect_rtcp_trailer_length
*/
printf("testing srtp_get_protect_trailer_length()..." );
if (srtp_test_protect_trailer_length() == srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_get_protect_rtcp_trailer_length()..." );
if (srtp_test_protect_rtcp_trailer_length() == srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_test_out_of_order_after_rollover()..." );
if (srtp_test_out_of_order_after_rollover() == srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_test_get_roc()..." );
if (srtp_test_get_roc() == srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_test_set_receiver_roc()..." );
if (srtp_test_set_receiver_roc() == srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing srtp_test_set_sender_roc()..." );
if (srtp_test_set_sender_roc() == srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing cryptex_csrc_but_no_extension_header()..." );
if (srtp_test_cryptex_csrc_but_no_extension_header() ==
srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
printf("testing cryptex_disable()..." );
if (srtp_test_cryptex_disable() == srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
}
if (do_stream_list) {
printf("testing srtp_stream_list..." );
if (srtp_stream_list_test() == srtp_err_status_ok) {
printf("passed\n" );
} else {
printf("failed\n" );
exit (1 );
}
}
if (do_timing_test) {
const srtp_policy_t **policy = policy_array;
/* loop over policies, run timing test for each */
while (*policy != NULL) {
srtp_print_policy(*policy);
srtp_do_timing(*policy);
policy++;
}
}
if (do_rejection_test) {
const srtp_policy_t **policy = policy_array;
/* loop over policies, run rejection timing test for each */
while (*policy != NULL) {
srtp_print_policy(*policy);
srtp_do_rejection_timing(*policy);
policy++;
}
}
if (do_codec_timing) {
srtp_policy_t policy;
int ignore;
double mips_value = mips_estimate(1000000000 , &ignore);
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_rtp_default(&policy.rtp);
srtp_crypto_policy_set_rtcp_default(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xdecafbad;
policy.key = test_key;
policy.deprecated_ekt = NULL;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
printf("mips estimate: %e\n" , mips_value);
printf("testing srtp processing time for voice codecs:\n" );
printf("codec\t\tlength (octets)\t\tsrtp instructions/second\n" );
printf("G.711\t\t%d\t\t\t%e\n" , 80 ,
(double )mips_value * (80 * 8 ) /
srtp_bits_per_second(80 , &policy) / .01 );
printf("G.711\t\t%d\t\t\t%e\n" , 160 ,
(double )mips_value * (160 * 8 ) /
srtp_bits_per_second(160 , &policy) / .02 );
printf("G.726-32\t%d\t\t\t%e\n" , 40 ,
(double )mips_value * (40 * 8 ) /
srtp_bits_per_second(40 , &policy) / .01 );
printf("G.726-32\t%d\t\t\t%e\n" , 80 ,
(double )mips_value * (80 * 8 ) /
srtp_bits_per_second(80 , &policy) / .02 );
printf("G.729\t\t%d\t\t\t%e\n" , 10 ,
(double )mips_value * (10 * 8 ) /
srtp_bits_per_second(10 , &policy) / .01 );
printf("G.729\t\t%d\t\t\t%e\n" , 20 ,
(double )mips_value * (20 * 8 ) /
srtp_bits_per_second(20 , &policy) / .02 );
printf("Wideband\t%d\t\t\t%e\n" , 320 ,
(double )mips_value * (320 * 8 ) /
srtp_bits_per_second(320 , &policy) / .01 );
printf("Wideband\t%d\t\t\t%e\n" , 640 ,
(double )mips_value * (640 * 8 ) /
srtp_bits_per_second(640 , &policy) / .02 );
}
status = srtp_shutdown();
if (status) {
printf("error: srtp shutdown failed with error code %d\n" , status);
exit (1 );
}
return 0 ;
}
/*
* srtp_create_test_packet ( len , ssrc ) returns a pointer to a
* ( malloced ) example RTP packet whose data field has the length given
* by pkt_octet_len and the SSRC value ssrc . The total length of the
* packet is twelve octets longer , since the header is at the
* beginning . There is room at the end of the packet for a trailer ,
* and the four octets following the packet are filled with 0 xff
* values to enable testing for overwrites .
*
* note that the location of the test packet can ( and should ) be
* deallocated with the free ( ) call once it is no longer needed .
*/
srtp_hdr_t *srtp_create_test_packet(int pkt_octet_len,
uint32_t ssrc,
int *pkt_len)
{
int i;
uint8_t *buffer;
srtp_hdr_t *hdr;
int bytes_in_hdr = 12 ;
/* allocate memory for test packet */
hdr = (srtp_hdr_t *)malloc(pkt_octet_len + bytes_in_hdr +
SRTP_MAX_TRAILER_LEN + 4 );
if (!hdr) {
return NULL;
}
hdr->version = 2 ; /* RTP version two */
hdr->p = 0 ; /* no padding needed */
hdr->x = 0 ; /* no header extension */
hdr->cc = 0 ; /* no CSRCs */
hdr->m = 0 ; /* marker bit */
hdr->pt = 0 xf; /* payload type */
hdr->seq = htons(0 x1234); /* sequence number */
hdr->ts = htonl(0 xdecafbad); /* timestamp */
hdr->ssrc = htonl(ssrc); /* synch. source */
buffer = (uint8_t *)hdr;
buffer += bytes_in_hdr;
/* set RTP data to 0xab */
for (i = 0 ; i < pkt_octet_len; i++) {
*buffer++ = 0 xab;
}
/* set post-data value to 0xffff to enable overrun checking */
for (i = 0 ; i < SRTP_MAX_TRAILER_LEN + 4 ; i++) {
*buffer++ = 0 xff;
}
*pkt_len = bytes_in_hdr + pkt_octet_len;
return hdr;
}
srtcp_hdr_t *srtp_create_rtcp_test_packet(int pkt_octet_len,
uint32_t ssrc,
int *pkt_len)
{
int i;
uint8_t *buffer;
srtcp_hdr_t *hdr;
int bytes_in_hdr = 8 ;
/* allocate memory for test packet */
hdr = (srtcp_hdr_t *)malloc(pkt_octet_len + bytes_in_hdr +
SRTP_MAX_SRTCP_TRAILER_LEN + 4 );
if (!hdr) {
return NULL;
}
hdr->version = 2 ; /* RTP version two */
hdr->p = 0 ; /* no padding needed */
hdr->rc = 0 ; /* no reports */
hdr->pt = 0 xc8; /* sender report (200) */
hdr->len = ((bytes_in_hdr + pkt_octet_len) % 4 ) - 1 ;
hdr->ssrc = htonl(ssrc); /* synch. source */
buffer = (uint8_t *)hdr;
buffer += bytes_in_hdr;
/* set data to 0xab */
for (i = 0 ; i < pkt_octet_len; i++) {
*buffer++ = 0 xab;
}
/* set post-data value to 0xffff to enable overrun checking */
for (i = 0 ; i < SRTP_MAX_SRTCP_TRAILER_LEN + 4 ; i++) {
*buffer++ = 0 xff;
}
*pkt_len = bytes_in_hdr + pkt_octet_len;
return hdr;
}
static srtp_hdr_t *srtp_create_test_packet_extended(int pkt_octet_len,
uint32_t ssrc,
uint16_t seq,
uint32_t ts,
int *pkt_len)
{
srtp_hdr_t *hdr;
hdr = srtp_create_test_packet(pkt_octet_len, ssrc, pkt_len);
if (hdr == NULL)
return hdr;
hdr->seq = htons(seq);
hdr->ts = htonl(ts);
return hdr;
}
srtp_hdr_t *srtp_create_test_packet_ext_hdr(int pkt_octet_len,
uint32_t ssrc,
int *pkt_len)
{
int i;
uint8_t *buffer;
srtp_hdr_t *hdr;
int bytes_in_hdr = 12 ;
uint8_t extension_header[12 ] = { /* one-byte header */
0 xbe, 0 xde,
/* size */
0 x00, 0 x02,
/* id 1, length 1 (i.e. 2 bytes) */
0 x11,
/* payload */
0 xca, 0 xfe,
/* padding */
0 x00,
/* id 2, length 0 (i.e. 1 byte) */
0 x20,
/* payload */
0 xba,
/* padding */
0 x00, 0 x00
};
/* allocate memory for test packet */
hdr = (srtp_hdr_t *)malloc(pkt_octet_len + bytes_in_hdr +
sizeof (extension_header) + SRTP_MAX_TRAILER_LEN +
4 );
if (!hdr)
return NULL;
hdr->version = 2 ; /* RTP version two */
hdr->p = 0 ; /* no padding needed */
hdr->x = 1 ; /* no header extension */
hdr->cc = 0 ; /* no CSRCs */
hdr->m = 0 ; /* marker bit */
hdr->pt = 0 xf; /* payload type */
hdr->seq = htons(0 x1234); /* sequence number */
hdr->ts = htonl(0 xdecafbad); /* timestamp */
hdr->ssrc = htonl(ssrc); /* synch. source */
buffer = (uint8_t *)hdr;
buffer += bytes_in_hdr;
memcpy(buffer, extension_header, sizeof (extension_header));
buffer += sizeof (extension_header);
/* set RTP data to 0xab */
for (i = 0 ; i < pkt_octet_len; i++)
*buffer++ = 0 xab;
/* set post-data value to 0xffff to enable overrun checking */
for (i = 0 ; i < SRTP_MAX_TRAILER_LEN + 4 ; i++)
*buffer++ = 0 xff;
*pkt_len = bytes_in_hdr + sizeof (extension_header) + pkt_octet_len;
return hdr;
}
static uint16_t srtp_get_xtn_profile(const uint8_t *packet)
{
const srtp_hdr_t *hdr = (const srtp_hdr_t *)packet;
const srtp_hdr_xtnd_t *xtn_hdr;
if (!hdr->x) {
return 0 ;
}
xtn_hdr = (const srtp_hdr_xtnd_t *)(packet + sizeof (srtp_hdr_t) +
(hdr->cc * sizeof (uint32_t)));
return ntohs(xtn_hdr->profile_specific);
}
void srtp_do_timing(const srtp_policy_t *policy)
{
int len;
/*
* note : the output of this function is formatted so that it
* can be used in gnuplot . ' # ' indicates a comment , and " \ r \ n "
* terminates a record
*/
printf("# testing srtp throughput:\r\n" );
printf("# mesg length (octets)\tthroughput (megabits per second)\r\n" );
for (len = 16 ; len <= 2048 ; len *= 2 ) {
printf("%d\t\t\t%f\r\n" , len,
srtp_bits_per_second(len, policy) / 1 .0 E6);
}
/* these extra linefeeds let gnuplot know that a dataset is done */
printf("\r\n\r\n" );
}
void srtp_do_rejection_timing(const srtp_policy_t *policy)
{
int len;
/*
* note : the output of this function is formatted so that it
* can be used in gnuplot . ' # ' indicates a comment , and " \ r \ n "
* terminates a record
*/
printf("# testing srtp rejection throughput:\r\n" );
printf("# mesg length (octets)\trejections per second\r\n" );
for (len = 8 ; len <= 2048 ; len *= 2 ) {
printf("%d\t\t\t%e\r\n" , len, srtp_rejections_per_second(len, policy));
}
/* these extra linefeeds let gnuplot know that a dataset is done */
printf("\r\n\r\n" );
}
#define MAX_MSG_LEN 1024
double srtp_bits_per_second(int msg_len_octets, const srtp_policy_t *policy)
{
srtp_t srtp;
srtp_hdr_t *mesg;
int i;
clock_t timer;
int num_trials = 100000 ;
int input_len, len;
uint32_t ssrc;
srtp_err_status_t status;
/*
* allocate and initialize an srtp session
*/
status = srtp_create(&srtp, policy);
if (status) {
printf("error: srtp_create() failed with error code %d\n" , status);
exit (1 );
}
/*
* if the ssrc is unspecified , use a predetermined one
*/
if (policy->ssrc.type != ssrc_specific) {
ssrc = 0 xdeadbeef;
} else {
ssrc = policy->ssrc.value;
}
/*
* create a test packet
*/
mesg = srtp_create_test_packet(msg_len_octets, ssrc, &input_len);
if (mesg == NULL) {
return 0 .0 ; /* indicate failure by returning zero */
}
timer = clock();
for (i = 0 ; i < num_trials; i++) {
len = input_len;
/* srtp protect message */
status = srtp_protect(srtp, mesg, &len);
if (status) {
printf("error: srtp_protect() failed with error code %d\n" , status);
exit (1 );
}
/* increment message number */
{
/* hack sequence to avoid problems with macros for htons/ntohs on
* some systems */
short new_seq = ntohs(mesg->seq) + 1 ;
mesg->seq = htons(new_seq);
}
}
timer = clock() - timer;
free(mesg);
status = srtp_dealloc(srtp);
if (status) {
printf("error: srtp_dealloc() failed with error code %d\n" , status);
exit (1 );
}
return (double )(msg_len_octets)*8 * num_trials * CLOCKS_PER_SEC / timer;
}
double srtp_rejections_per_second(int msg_len_octets,
const srtp_policy_t *policy)
{
srtp_ctx_t *srtp;
srtp_hdr_t *mesg;
int i;
int len;
clock_t timer;
int num_trials = 1000000 ;
uint32_t ssrc = policy->ssrc.value;
srtp_err_status_t status;
/*
* allocate and initialize an srtp session
*/
status = srtp_create(&srtp, policy);
if (status) {
printf("error: srtp_create() failed with error code %d\n" , status);
exit (1 );
}
mesg = srtp_create_test_packet(msg_len_octets, ssrc, &len);
if (mesg == NULL) {
return 0 .0 ; /* indicate failure by returning zero */
}
srtp_protect(srtp, (srtp_hdr_t *)mesg, &len);
timer = clock();
for (i = 0 ; i < num_trials; i++) {
len = msg_len_octets;
srtp_unprotect(srtp, (srtp_hdr_t *)mesg, &len);
}
timer = clock() - timer;
free(mesg);
status = srtp_dealloc(srtp);
if (status) {
printf("error: srtp_dealloc() failed with error code %d\n" , status);
exit (1 );
}
return (double )num_trials * CLOCKS_PER_SEC / timer;
}
void err_check(srtp_err_status_t s)
{
if (s != srtp_err_status_ok) {
fprintf(stderr, "error: unexpected srtp failure (code %d)\n" , s);
exit (1 );
}
}
srtp_err_status_t srtp_test_call_protect(srtp_t srtp_sender,
srtp_hdr_t *hdr,
int *len,
int mki_index)
{
if (mki_index == -1 ) {
return srtp_protect(srtp_sender, hdr, len);
} else {
return srtp_protect_mki(srtp_sender, hdr, len, 1 , mki_index);
}
}
srtp_err_status_t srtp_test_call_protect_rtcp(srtp_t srtp_sender,
srtcp_hdr_t *hdr,
int *len,
int mki_index)
{
if (mki_index == -1 ) {
return srtp_protect_rtcp(srtp_sender, hdr, len);
} else {
return srtp_protect_rtcp_mki(srtp_sender, hdr, len, 1 , mki_index);
}
}
srtp_err_status_t srtp_test_call_unprotect(srtp_t srtp_sender,
srtp_hdr_t *hdr,
int *len,
int use_mki)
{
if (use_mki == -1 ) {
return srtp_unprotect(srtp_sender, hdr, len);
} else {
return srtp_unprotect_mki(srtp_sender, hdr, len, use_mki);
}
}
srtp_err_status_t srtp_test_call_unprotect_rtcp(srtp_t srtp_sender,
srtcp_hdr_t *hdr,
int *len,
int use_mki)
{
if (use_mki == -1 ) {
return srtp_unprotect_rtcp(srtp_sender, hdr, len);
} else {
return srtp_unprotect_rtcp_mki(srtp_sender, hdr, len, use_mki);
}
}
srtp_err_status_t srtp_test(const srtp_policy_t *policy,
int extension_header,
int mki_index)
{
int i;
srtp_t srtp_sender;
srtp_t srtp_rcvr;
srtp_err_status_t status = srtp_err_status_ok;
srtp_hdr_t *hdr, *hdr2;
uint8_t hdr_enc[64 ];
uint8_t *pkt_end;
int msg_len_octets, msg_len_enc, msg_len;
int len, len2;
uint32_t tag_length;
uint32_t ssrc;
srtp_policy_t *rcvr_policy;
srtp_policy_t tmp_policy;
int header = 1 ;
int use_mki = 0 ;
if (mki_index >= 0 )
use_mki = 1 ;
if (extension_header) {
memcpy(&tmp_policy, policy, sizeof (srtp_policy_t));
tmp_policy.enc_xtn_hdr = &header;
tmp_policy.enc_xtn_hdr_count = 1 ;
err_check(srtp_create(&srtp_sender, &tmp_policy));
} else {
err_check(srtp_create(&srtp_sender, policy));
}
/* print out policy */
err_check(srtp_session_print_policy(srtp_sender));
/*
* initialize data buffer , using the ssrc in the policy unless that
* value is a wildcard , in which case we ' ll just use an arbitrary
* one
*/
if (policy->ssrc.type != ssrc_specific) {
ssrc = 0 xdecafbad;
} else {
ssrc = policy->ssrc.value;
}
msg_len_octets = 28 ;
if (extension_header) {
hdr = srtp_create_test_packet_ext_hdr(msg_len_octets, ssrc, &len);
hdr2 = srtp_create_test_packet_ext_hdr(msg_len_octets, ssrc, &len2);
} else {
hdr = srtp_create_test_packet(msg_len_octets, ssrc, &len);
hdr2 = srtp_create_test_packet(msg_len_octets, ssrc, &len2);
}
/* save original msg len */
msg_len = len;
if (hdr == NULL) {
free(hdr2);
return srtp_err_status_alloc_fail;
}
if (hdr2 == NULL) {
free(hdr);
return srtp_err_status_alloc_fail;
}
debug_print(mod_driver, "before protection:\n%s" ,
srtp_packet_to_string(hdr, len));
#if PRINT_REFERENCE_PACKET
debug_print(mod_driver, "reference packet before protection:\n%s" ,
octet_string_hex_string((uint8_t *)hdr, len));
#endif
err_check(srtp_test_call_protect(srtp_sender, hdr, &len, mki_index));
debug_print(mod_driver, "after protection:\n%s" ,
srtp_packet_to_string(hdr, len));
#if PRINT_REFERENCE_PACKET
debug_print(mod_driver, "after protection:\n%s" ,
octet_string_hex_string((uint8_t *)hdr, len));
#endif
/* save protected message and length */
memcpy(hdr_enc, hdr, len);
msg_len_enc = len;
/*
* check for overrun of the srtp_protect ( ) function
*
* The packet is followed by a value of 0 xfffff ; if the value of the
* data following the packet is different , then we know that the
* protect function is overwriting the end of the packet .
*/
err_check(srtp_get_protect_trailer_length(srtp_sender, use_mki, mki_index,
&tag_length));
pkt_end = (uint8_t *)hdr + msg_len + tag_length;
for (i = 0 ; i < 4 ; i++) {
if (pkt_end[i] != 0 xff) {
fprintf(stdout,
"overwrite in srtp_protect() function "
"(expected %x, found %x in trailing octet %d)\n" ,
0 xff, ((uint8_t *)hdr)[i], i);
free(hdr);
free(hdr2);
return srtp_err_status_algo_fail;
}
}
/*
* if the policy includes confidentiality , check that ciphertext is
* different than plaintext
*
* Note that this check will give false negatives , with some small
* probability , especially if the packets are short . For that
* reason , we skip this check if the plaintext is less than four
* octets long .
*/
if ((policy->rtp.sec_serv & sec_serv_conf) && (msg_len_octets >= 4 )) {
printf("testing that ciphertext is distinct from plaintext..." );
status = srtp_err_status_algo_fail;
for (i = 12 ; i < msg_len_octets + 12 ; i++) {
if (((uint8_t *)hdr)[i] != ((uint8_t *)hdr2)[i]) {
status = srtp_err_status_ok;
}
}
if (status) {
printf("failed\n" );
free(hdr);
free(hdr2);
return status;
}
printf("passed\n" );
}
/*
* if the policy uses a ' wildcard ' ssrc , then we need to make a copy
* of the policy that changes the direction to inbound
*
* we always copy the policy into the rcvr_policy , since otherwise
* the compiler would fret about the constness of the policy
*/
rcvr_policy = (srtp_policy_t *)malloc(sizeof (srtp_policy_t));
if (rcvr_policy == NULL) {
free(hdr);
free(hdr2);
return srtp_err_status_alloc_fail;
}
if (extension_header) {
memcpy(rcvr_policy, &tmp_policy, sizeof (srtp_policy_t));
if (tmp_policy.ssrc.type == ssrc_any_outbound) {
rcvr_policy->ssrc.type = ssrc_any_inbound;
}
} else {
memcpy(rcvr_policy, policy, sizeof (srtp_policy_t));
if (policy->ssrc.type == ssrc_any_outbound) {
rcvr_policy->ssrc.type = ssrc_any_inbound;
}
}
err_check(srtp_create(&srtp_rcvr, rcvr_policy));
err_check(srtp_test_call_unprotect(srtp_rcvr, hdr, &len, use_mki));
debug_print(mod_driver, "after unprotection:\n%s" ,
srtp_packet_to_string(hdr, len));
/* verify that the unprotected packet matches the origial one */
for (i = 0 ; i < len; i++) {
if (((uint8_t *)hdr)[i] != ((uint8_t *)hdr2)[i]) {
fprintf(stdout, "mismatch at octet %d\n" , i);
status = srtp_err_status_algo_fail;
}
}
if (status) {
free(hdr);
free(hdr2);
free(rcvr_policy);
return status;
}
/*
* if the policy includes authentication , then test for false positives
*/
if (policy->rtp.sec_serv & sec_serv_auth) {
char *data = ((char *)hdr) + (extension_header ? 24 : 12 );
printf("testing for false positives in replay check..." );
/* unprotect a second time - should fail with a replay error */
status =
srtp_test_call_unprotect(srtp_rcvr, hdr, &msg_len_enc, use_mki);
if (status != srtp_err_status_replay_fail) {
printf("failed with error code %d\n" , status);
free(hdr);
free(hdr2);
free(rcvr_policy);
return srtp_err_status_algo_fail;
} else {
printf("passed\n" );
}
printf("testing for false positives in auth check..." );
/* increment sequence number in header */
hdr->seq++;
/* apply protection */
err_check(srtp_test_call_protect(srtp_sender, hdr, &len, mki_index));
/* flip bits in packet */
data[0 ] ^= 0 xff;
/* unprotect, and check for authentication failure */
status = srtp_test_call_unprotect(srtp_rcvr, hdr, &len, use_mki);
if (status != srtp_err_status_auth_fail) {
printf("failed with error code %d\n" , status);
printf("failed\n" );
free(hdr);
free(hdr2);
free(rcvr_policy);
return srtp_err_status_algo_fail;
} else {
printf("passed\n" );
}
}
err_check(srtp_dealloc(srtp_sender));
err_check(srtp_dealloc(srtp_rcvr));
free(hdr);
free(hdr2);
free(rcvr_policy);
return srtp_err_status_ok;
}
srtp_err_status_t srtcp_test(const srtp_policy_t *policy, int mki_index)
{
int i;
srtp_t srtcp_sender;
srtp_t srtcp_rcvr;
srtp_err_status_t status = srtp_err_status_ok;
srtcp_hdr_t *hdr, *hdr2;
uint8_t hdr_enc[64 ];
uint8_t *pkt_end;
int msg_len_octets, msg_len_enc, msg_len;
int len, len2;
uint32_t tag_length;
uint32_t ssrc;
srtp_policy_t *rcvr_policy;
int use_mki = 0 ;
if (mki_index >= 0 )
use_mki = 1 ;
err_check(srtp_create(&srtcp_sender, policy));
/* print out policy */
err_check(srtp_session_print_policy(srtcp_sender));
/*
* initialize data buffer , using the ssrc in the policy unless that
* value is a wildcard , in which case we ' ll just use an arbitrary
* one
*/
if (policy->ssrc.type != ssrc_specific) {
ssrc = 0 xdecafbad;
} else {
ssrc = policy->ssrc.value;
}
msg_len_octets = 28 ;
hdr = srtp_create_rtcp_test_packet(msg_len_octets, ssrc, &len);
/* save message len */
msg_len = len;
if (hdr == NULL) {
return srtp_err_status_alloc_fail;
}
hdr2 = srtp_create_rtcp_test_packet(msg_len_octets, ssrc, &len2);
if (hdr2 == NULL) {
free(hdr);
return srtp_err_status_alloc_fail;
}
debug_print(mod_driver, "before protection:\n%s" ,
srtp_rtcp_packet_to_string(hdr, len));
#if PRINT_REFERENCE_PACKET
debug_print(mod_driver, "reference packet before protection:\n%s" ,
octet_string_hex_string((uint8_t *)hdr, len));
#endif
err_check(srtp_test_call_protect_rtcp(srtcp_sender, hdr, &len, mki_index));
debug_print(mod_driver, "after protection:\n%s" ,
srtp_rtcp_packet_to_string(hdr, len));
#if PRINT_REFERENCE_PACKET
debug_print(mod_driver, "after protection:\n%s" ,
octet_string_hex_string((uint8_t *)hdr, len));
#endif
/* save protected message and length */
memcpy(hdr_enc, hdr, len);
msg_len_enc = len;
/*
* check for overrun of the srtp_protect_rtcp ( ) function
*
* The packet is followed by a value of 0 xfffff ; if the value of the
* data following the packet is different , then we know that the
* protect function is overwriting the end of the packet .
*/
srtp_get_protect_rtcp_trailer_length(srtcp_sender, use_mki, mki_index,
&tag_length);
pkt_end = (uint8_t *)hdr + msg_len + tag_length;
for (i = 0 ; i < 4 ; i++) {
if (pkt_end[i] != 0 xff) {
fprintf(stdout,
"overwrite in srtp_protect_rtcp() function "
"(expected %x, found %x in trailing octet %d)\n" ,
0 xff, ((uint8_t *)hdr)[i], i);
free(hdr);
free(hdr2);
return srtp_err_status_algo_fail;
}
}
/*
* if the policy includes confidentiality , check that ciphertext is
* different than plaintext
*
* Note that this check will give false negatives , with some small
* probability , especially if the packets are short . For that
* reason , we skip this check if the plaintext is less than four
* octets long .
*/
if ((policy->rtcp.sec_serv & sec_serv_conf) && (msg_len_octets >= 4 )) {
printf("testing that ciphertext is distinct from plaintext..." );
status = srtp_err_status_algo_fail;
for (i = 12 ; i < msg_len_octets + 12 ; i++) {
if (((uint8_t *)hdr)[i] != ((uint8_t *)hdr2)[i]) {
status = srtp_err_status_ok;
}
}
if (status) {
printf("failed\n" );
free(hdr);
free(hdr2);
return status;
}
printf("passed\n" );
}
/*
* if the policy uses a ' wildcard ' ssrc , then we need to make a copy
* of the policy that changes the direction to inbound
*
* we always copy the policy into the rcvr_policy , since otherwise
* the compiler would fret about the constness of the policy
*/
rcvr_policy = (srtp_policy_t *)malloc(sizeof (srtp_policy_t));
if (rcvr_policy == NULL) {
free(hdr);
free(hdr2);
return srtp_err_status_alloc_fail;
}
memcpy(rcvr_policy, policy, sizeof (srtp_policy_t));
if (policy->ssrc.type == ssrc_any_outbound) {
rcvr_policy->ssrc.type = ssrc_any_inbound;
}
err_check(srtp_create(&srtcp_rcvr, rcvr_policy));
err_check(srtp_test_call_unprotect_rtcp(srtcp_rcvr, hdr, &len, use_mki));
debug_print(mod_driver, "after unprotection:\n%s" ,
srtp_rtcp_packet_to_string(hdr, len));
/* verify that the unprotected packet matches the original one */
for (i = 0 ; i < len; i++) {
if (((uint8_t *)hdr)[i] != ((uint8_t *)hdr2)[i]) {
fprintf(stdout, "mismatch at octet %d\n" , i);
status = srtp_err_status_algo_fail;
}
}
if (status) {
free(hdr);
free(hdr2);
free(rcvr_policy);
return status;
}
/*
* if the policy includes authentication , then test for false positives
*/
if (policy->rtp.sec_serv & sec_serv_auth) {
char *data = ((char *)hdr) + 12 ;
printf("testing for false positives in replay check..." );
/* unprotect a second time - should fail with a replay error */
status = srtp_test_call_unprotect_rtcp(srtcp_rcvr, hdr, &msg_len_enc,
use_mki);
if (status != srtp_err_status_replay_fail) {
printf("failed with error code %d\n" , status);
free(hdr);
free(hdr2);
free(rcvr_policy);
return srtp_err_status_algo_fail;
} else {
printf("passed\n" );
}
printf("testing for false positives in auth check..." );
/* apply protection */
err_check(
srtp_test_call_protect_rtcp(srtcp_sender, hdr, &len, mki_index));
/* flip bits in packet */
data[0 ] ^= 0 xff;
/* unprotect, and check for authentication failure */
status = srtp_test_call_unprotect_rtcp(srtcp_rcvr, hdr, &len, use_mki);
if (status != srtp_err_status_auth_fail) {
printf("failed with error code %d\n" , status);
printf("failed\n" );
free(hdr);
free(hdr2);
free(rcvr_policy);
return srtp_err_status_algo_fail;
} else {
printf("passed\n" );
}
}
err_check(srtp_dealloc(srtcp_sender));
err_check(srtp_dealloc(srtcp_rcvr));
free(hdr);
free(hdr2);
free(rcvr_policy);
return srtp_err_status_ok;
}
struct srtp_session_print_stream_data {
// set by callback to indicate failure
srtp_err_status_t status;
// indicates if it is the template stream or a regular stream
int is_template;
};
int srtp_session_print_stream(srtp_stream_t stream, void *raw_data)
{
static const char *serv_descr[4 ] = { "none" , "confidentiality" ,
"authentication" ,
"confidentiality and authentication" };
static const char *direction[3 ] = { "unknown" , "outbound" , "inbound" };
struct srtp_session_print_stream_data *data =
(struct srtp_session_print_stream_data *)raw_data;
srtp_session_keys_t *session_keys = &stream->session_keys[0 ];
char ssrc_text[32 ];
if (!data->is_template && stream->rtp_services > sec_serv_conf_and_auth) {
data->status = srtp_err_status_bad_param;
return 1 ;
}
if (data->is_template) {
snprintf(ssrc_text, sizeof (ssrc_text), "any %s" ,
direction[stream->direction]);
} else {
snprintf(ssrc_text, sizeof (ssrc_text), "0x%08x" , stream->ssrc);
}
printf("# SSRC: %s\r\n"
"# rtp cipher: %s\r\n"
"# rtp auth: %s\r\n"
"# rtp services: %s\r\n"
"# rtcp cipher: %s\r\n"
"# rtcp auth: %s\r\n"
"# rtcp services: %s\r\n"
"# window size: %lu\r\n"
"# tx rtx allowed:%s\r\n" ,
ssrc_text, session_keys->rtp_cipher->type->description,
session_keys->rtp_auth->type->description,
serv_descr[stream->rtp_services],
session_keys->rtcp_cipher->type->description,
session_keys->rtcp_auth->type->description,
serv_descr[stream->rtcp_services],
srtp_rdbx_get_window_size(&stream->rtp_rdbx),
stream->allow_repeat_tx ? "true" : "false" );
printf("# Encrypted extension headers: " );
if (stream->enc_xtn_hdr && stream->enc_xtn_hdr_count > 0 ) {
int *enc_xtn_hdr = stream->enc_xtn_hdr;
int count = stream->enc_xtn_hdr_count;
while (count > 0 ) {
printf("%d " , *enc_xtn_hdr);
enc_xtn_hdr++;
count--;
}
printf("\n" );
} else {
printf("none\n" );
}
return 0 ;
}
srtp_err_status_t srtp_session_print_policy(srtp_t srtp)
{
struct srtp_session_print_stream_data data = { srtp_err_status_ok, 0 };
/* sanity checking */
if (srtp == NULL) {
return srtp_err_status_fail;
}
/* if there's a template stream, print it out */
if (srtp->stream_template != NULL) {
data.is_template = 1 ;
srtp_session_print_stream(srtp->stream_template, &data);
}
/* loop over streams in session, printing the policy of each */
data.is_template = 0 ;
srtp_stream_list_for_each(srtp->stream_list, srtp_session_print_stream,
&data);
return data.status;
}
srtp_err_status_t srtp_print_policy(const srtp_policy_t *policy)
{
srtp_err_status_t status;
srtp_t session;
status = srtp_create(&session, policy);
if (status) {
return status;
}
status = srtp_session_print_policy(session);
if (status) {
return status;
}
status = srtp_dealloc(session);
if (status) {
return status;
}
return srtp_err_status_ok;
}
/*
* srtp_print_packet ( . . . ) is for debugging only
* it prints an RTP packet to the stdout
*
* note that this function is * not * threadsafe
*/
#include <stdio.h>
#define MTU 2048
char packet_string[MTU];
char *srtp_packet_to_string(srtp_hdr_t *hdr, int pkt_octet_len)
{
int octets_in_rtp_header = 12 ;
uint8_t *data = ((uint8_t *)hdr) + octets_in_rtp_header;
int hex_len = pkt_octet_len - octets_in_rtp_header;
/* sanity checking */
if ((hdr == NULL) || (pkt_octet_len > MTU)) {
return NULL;
}
/* write packet into string */
snprintf(packet_string, sizeof (packet_string),
"(s)rtp packet: {\n"
" version:\t%d\n"
" p:\t\t%d\n"
" x:\t\t%d\n"
" cc:\t\t%d\n"
" m:\t\t%d\n"
" pt:\t\t%x\n"
" seq:\t\t%x\n"
" ts:\t\t%x\n"
" ssrc:\t%x\n"
" data:\t%s\n"
"} (%d octets in total)\n" ,
hdr->version, hdr->p, hdr->x, hdr->cc, hdr->m, hdr->pt, hdr->seq,
hdr->ts, hdr->ssrc, octet_string_hex_string(data, hex_len),
pkt_octet_len);
return packet_string;
}
char *srtp_rtcp_packet_to_string(srtcp_hdr_t *hdr, int pkt_octet_len)
{
int octets_in_rtcp_header = 8 ;
uint8_t *data = ((uint8_t *)hdr) + octets_in_rtcp_header;
int hex_len = pkt_octet_len - octets_in_rtcp_header;
/* sanity checking */
if ((hdr == NULL) || (pkt_octet_len > MTU)) {
return NULL;
}
/* write packet into string */
snprintf(packet_string, sizeof (packet_string),
"(s)rtcp packet: {\n"
" version:\t%d\n"
" p:\t\t%d\n"
" rc:\t\t%d\n"
" pt:\t\t%x\n"
" len:\t\t%x\n"
" ssrc:\t%x\n"
" data:\t%s\n"
"} (%d octets in total)\n" ,
hdr->version, hdr->p, hdr->rc, hdr->pt, hdr->len, hdr->ssrc,
octet_string_hex_string(data, hex_len), pkt_octet_len);
return packet_string;
}
/*
* mips_estimate ( ) is a simple function to estimate the number of
* instructions per second that the host can perform . note that this
* function can be grossly wrong ; you may want to have a manual sanity
* check of its output !
*
* the ' ignore ' pointer is there to convince the compiler to not just
* optimize away the function
*/
double mips_estimate(int num_trials, int *ignore)
{
clock_t t;
volatile int i, sum;
sum = 0 ;
t = clock();
for (i = 0 ; i < num_trials; i++) {
sum += i;
}
t = clock() - t;
if (t < 1 ) {
t = 1 ;
}
/* printf("%d\n", sum); */
*ignore = sum;
return (double )num_trials * CLOCKS_PER_SEC / t;
}
/*
* srtp_validate ( ) verifies the correctness of libsrtp by comparing
* some computed packets against some pre - computed reference values .
* These packets were made with the default SRTP policy .
*/
srtp_err_status_t srtp_validate(void )
{
// clang-format off
uint8_t srtp_plaintext_ref[28 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab
};
uint8_t srtp_plaintext[38 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00
};
uint8_t srtp_ciphertext[38 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 x4e, 0 x55, 0 xdc, 0 x4c,
0 xe7, 0 x99, 0 x78, 0 xd8, 0 x8c, 0 xa4, 0 xd2, 0 x15,
0 x94, 0 x9d, 0 x24, 0 x02, 0 xb7, 0 x8d, 0 x6a, 0 xcc,
0 x99, 0 xea, 0 x17, 0 x9b, 0 x8d, 0 xbb
};
uint8_t rtcp_plaintext_ref[24 ] = {
0 x81, 0 xc8, 0 x00, 0 x0b, 0 xca, 0 xfe, 0 xba, 0 xbe,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
};
uint8_t rtcp_plaintext[38 ] = {
0 x81, 0 xc8, 0 x00, 0 x0b, 0 xca, 0 xfe, 0 xba, 0 xbe,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00
};
uint8_t srtcp_ciphertext[38 ] = {
0 x81, 0 xc8, 0 x00, 0 x0b, 0 xca, 0 xfe, 0 xba, 0 xbe,
0 x71, 0 x28, 0 x03, 0 x5b, 0 xe4, 0 x87, 0 xb9, 0 xbd,
0 xbe, 0 xf8, 0 x90, 0 x41, 0 xf9, 0 x77, 0 xa5, 0 xa8,
0 x80, 0 x00, 0 x00, 0 x01, 0 x99, 0 x3e, 0 x08, 0 xcd,
0 x54, 0 xd6, 0 xc1, 0 x23, 0 x07, 0 x98
};
// clang-format on
srtp_t srtp_snd, srtp_recv;
srtp_err_status_t status;
int len;
srtp_policy_t policy;
/*
* create a session with a single stream using the default srtp
* policy and with the SSRC value 0 xcafebabe
*/
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_rtp_default(&policy.rtp);
srtp_crypto_policy_set_rtcp_default(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key;
policy.deprecated_ekt = NULL;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
status = srtp_create(&srtp_snd, &policy);
if (status) {
return status;
}
/*
* protect plaintext , then compare with ciphertext
*/
len = 28 ;
status = srtp_protect(srtp_snd, srtp_plaintext, &len);
if (status || (len != 38 )) {
return srtp_err_status_fail;
}
debug_print(mod_driver, "ciphertext:\n %s" ,
octet_string_hex_string(srtp_plaintext, len));
debug_print(mod_driver, "ciphertext reference:\n %s" ,
octet_string_hex_string(srtp_ciphertext, len));
if (srtp_octet_string_is_eq(srtp_plaintext, srtp_ciphertext, len)) {
return srtp_err_status_fail;
}
/*
* protect plaintext rtcp , then compare with srtcp ciphertext
*/
len = 24 ;
status = srtp_protect_rtcp(srtp_snd, rtcp_plaintext, &len);
if (status || (len != 38 )) {
return srtp_err_status_fail;
}
debug_print(mod_driver, "srtcp ciphertext:\n %s" ,
octet_string_hex_string(rtcp_plaintext, len));
debug_print(mod_driver, "srtcp ciphertext reference:\n %s" ,
octet_string_hex_string(srtcp_ciphertext, len));
if (srtp_octet_string_is_eq(rtcp_plaintext, srtcp_ciphertext, len)) {
return srtp_err_status_fail;
}
/*
* create a receiver session context comparable to the one created
* above - we need to do this so that the replay checking doesn ' t
* complain
*/
status = srtp_create(&srtp_recv, &policy);
if (status) {
return status;
}
/*
* unprotect ciphertext , then compare with plaintext
*/
status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len);
if (status || (len != 28 )) {
return status;
}
if (srtp_octet_string_is_eq(srtp_ciphertext, srtp_plaintext_ref, len)) {
return srtp_err_status_fail;
}
/*
* unprotect srtcp ciphertext , then compare with rtcp plaintext
*/
len = 38 ;
status = srtp_unprotect_rtcp(srtp_recv, srtcp_ciphertext, &len);
if (status || (len != 24 )) {
return status;
}
if (srtp_octet_string_is_eq(srtcp_ciphertext, rtcp_plaintext_ref, len)) {
return srtp_err_status_fail;
}
status = srtp_dealloc(srtp_snd);
if (status) {
return status;
}
status = srtp_dealloc(srtp_recv);
if (status) {
return status;
}
return srtp_err_status_ok;
}
/*
* srtp_validate_null_sha1_80 ( ) verifies the correctness of libsrtp by comparing
* some computed packets against some pre - computed reference values .
* These packets were made with a policy that applies null encryption
* and HMAC authentication .
*/
srtp_err_status_t srtp_validate_null_sha1_80(void )
{
// clang-format off
uint8_t srtp_plaintext_ref[28 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab
};
uint8_t srtp_plaintext[38 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00
};
uint8_t srtp_ciphertext[38 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xa1, 0 x36, 0 x27,
0 x0b, 0 x67, 0 x91, 0 x34, 0 xce, 0 x9b
};
uint8_t rtcp_plaintext_ref[24 ] = {
0 x81, 0 xc8, 0 x00, 0 x0b, 0 xca, 0 xfe, 0 xba, 0 xbe,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
};
uint8_t rtcp_plaintext[38 ] = {
0 x81, 0 xc8, 0 x00, 0 x0b, 0 xca, 0 xfe, 0 xba, 0 xbe,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00
};
uint8_t srtcp_ciphertext[38 ] = {
0 x81, 0 xc8, 0 x00, 0 x0b, 0 xca, 0 xfe, 0 xba, 0 xbe,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 x00, 0 x00, 0 x00, 0 x01, 0 xfe, 0 x88, 0 xc7, 0 xfd,
0 xfd, 0 x37, 0 xeb, 0 xce, 0 x61, 0 x5d,
};
// clang-format on
srtp_t srtp_snd, srtp_recv;
srtp_err_status_t status;
int len;
srtp_policy_t policy;
/*
* create a session with a single stream using the null cipher
* and sha1_80 policy and with the SSRC value 0 xcafebabe
*/
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_null_cipher_hmac_sha1_80(&policy.rtp);
srtp_crypto_policy_set_null_cipher_hmac_sha1_80(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key;
policy.deprecated_ekt = NULL;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
status = srtp_create(&srtp_snd, &policy);
if (status) {
return status;
}
/*
* protect plaintext , then compare with ciphertext
*/
len = 28 ;
status = srtp_protect(srtp_snd, srtp_plaintext, &len);
if (status || (len != 38 )) {
return srtp_err_status_fail;
}
debug_print(mod_driver, "ciphertext:\n %s" ,
octet_string_hex_string(srtp_plaintext, len));
debug_print(mod_driver, "ciphertext reference:\n %s" ,
octet_string_hex_string(srtp_ciphertext, len));
if (srtp_octet_string_is_eq(srtp_plaintext, srtp_ciphertext, len)) {
return srtp_err_status_fail;
}
/*
* protect plaintext rtcp , then compare with srtcp ciphertext
*/
len = 24 ;
status = srtp_protect_rtcp(srtp_snd, rtcp_plaintext, &len);
if (status || (len != 38 )) {
return srtp_err_status_fail;
}
debug_print(mod_driver, "srtcp ciphertext:\n %s" ,
octet_string_hex_string(rtcp_plaintext, len));
debug_print(mod_driver, "srtcp ciphertext reference:\n %s" ,
octet_string_hex_string(srtcp_ciphertext, len));
if (srtp_octet_string_is_eq(rtcp_plaintext, srtcp_ciphertext, len)) {
return srtp_err_status_fail;
}
/*
* create a receiver session context comparable to the one created
* above - we need to do this so that the replay checking doesn ' t
* complain
*/
status = srtp_create(&srtp_recv, &policy);
if (status) {
return status;
}
/*
* unprotect ciphertext , then compare with plaintext
*/
status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len);
if (status || (len != 28 )) {
return status;
}
if (srtp_octet_string_is_eq(srtp_ciphertext, srtp_plaintext_ref, len)) {
return srtp_err_status_fail;
}
/*
* unprotect srtcp ciphertext , then compare with rtcp plaintext
*/
len = 38 ;
status = srtp_unprotect_rtcp(srtp_recv, srtcp_ciphertext, &len);
if (status || (len != 24 )) {
return status;
}
if (srtp_octet_string_is_eq(srtcp_ciphertext, rtcp_plaintext_ref, len)) {
return srtp_err_status_fail;
}
status = srtp_dealloc(srtp_snd);
if (status) {
return status;
}
status = srtp_dealloc(srtp_recv);
if (status) {
return status;
}
return srtp_err_status_ok;
}
/*
* srtp_validate_null_null ( ) verifies the correctness of libsrtp by comparing
* some computed packets against some pre - computed reference values .
* These packets were made with a policy that applies null encryption
* and null authentication .
*/
srtp_err_status_t srtp_validate_null_null(void )
{
// clang-format off
uint8_t srtp_plaintext_ref[28 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab
};
uint8_t srtp_plaintext[28 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab,
};
uint8_t srtp_ciphertext[28 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab,
};
uint8_t rtcp_plaintext_ref[24 ] = {
0 x81, 0 xc8, 0 x00, 0 x0b, 0 xca, 0 xfe, 0 xba, 0 xbe,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
};
uint8_t rtcp_plaintext[28 ] = {
0 x81, 0 xc8, 0 x00, 0 x0b, 0 xca, 0 xfe, 0 xba, 0 xbe,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 x00, 0 x00, 0 x00, 0 x00,
};
uint8_t srtcp_ciphertext[28 ] = {
0 x81, 0 xc8, 0 x00, 0 x0b, 0 xca, 0 xfe, 0 xba, 0 xbe,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 x00, 0 x00, 0 x00, 0 x01,
};
// clang-format on
srtp_t srtp_snd, srtp_recv;
srtp_err_status_t status;
int len;
srtp_policy_t policy;
/*
* create a session with a single stream using the null cipher
* and null hmac policy and with the SSRC value 0 xcafebabe
*/
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_null_cipher_hmac_null(&policy.rtp);
srtp_crypto_policy_set_null_cipher_hmac_null(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
/*
* We need some non - zero value set here
*/
policy.key = (void *)(uintptr_t)-1 ;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
status = srtp_create(&srtp_snd, &policy);
if (status) {
return status;
}
/*
* protect plaintext , then compare with ciphertext
*/
len = 28 ;
status = srtp_protect(srtp_snd, srtp_plaintext, &len);
if (status || (len != 28 )) {
return srtp_err_status_fail;
}
if (status) {
return status;
}
debug_print(mod_driver, "ciphertext:\n %s" ,
octet_string_hex_string(srtp_plaintext, len));
debug_print(mod_driver, "ciphertext reference:\n %s" ,
octet_string_hex_string(srtp_ciphertext, len));
if (srtp_octet_string_is_eq(srtp_plaintext, srtp_ciphertext, len)) {
return srtp_err_status_fail;
}
/*
* protect plaintext rtcp , then compare with srtcp ciphertext
*/
len = 24 ;
status = srtp_protect_rtcp(srtp_snd, rtcp_plaintext, &len);
if (!status && (len != 28 )) {
status = srtp_err_status_fail;
}
if (status) {
return status;
}
debug_print(mod_driver, "srtcp ciphertext:\n %s" ,
octet_string_hex_string(rtcp_plaintext, len));
debug_print(mod_driver, "srtcp ciphertext reference:\n %s" ,
octet_string_hex_string(srtcp_ciphertext, len));
if (srtp_octet_string_is_eq(rtcp_plaintext, srtcp_ciphertext, len)) {
return srtp_err_status_fail;
}
/*
* create a receiver session context comparable to the one created
* above - we need to do this so that the replay checking doesn ' t
* complain
*/
status = srtp_create(&srtp_recv, &policy);
if (status) {
return status;
}
/*
* unprotect ciphertext , then compare with plaintext
*/
status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len);
if (!status && (len != 28 )) {
status = srtp_err_status_fail;
}
if (status) {
return status;
}
if (srtp_octet_string_is_eq(srtp_ciphertext, srtp_plaintext_ref, len)) {
return srtp_err_status_fail;
}
/*
* unprotect srtcp ciphertext , then compare with rtcp plaintext
*/
len = 28 ;
status = srtp_unprotect_rtcp(srtp_recv, srtcp_ciphertext, &len);
if (!status && (len != 24 )) {
status = srtp_err_status_fail;
}
if (status) {
return status;
}
if (srtp_octet_string_is_eq(srtcp_ciphertext, rtcp_plaintext_ref, len)) {
return srtp_err_status_fail;
}
status = srtp_dealloc(srtp_snd);
if (status) {
return status;
}
status = srtp_dealloc(srtp_recv);
if (status) {
return status;
}
return srtp_err_status_ok;
}
/*
* srtp_validate_cryptex ( ) verifies the correctness of libsrtp by comparing
* some computed packets against some pre - computed reference values .
* These packets were made with the default SRTP policy .
*/
srtp_err_status_t srtp_validate_cryptex(void )
{
// clang-format off
/* Plaintext packet with 1-byte header extension */
char *srtp_1bytehdrext_ref =
"900f1235"
"decafbad"
"cafebabe"
"bede0001"
"51000200"
"abababab"
"abababab"
"abababab"
"abababab" ;
/* AES-CTR/HMAC-SHA1 Ciphertext packet with 1-byte header extension */
char *srtp_1bytehdrext_cryptex =
"900f1235"
"decafbad"
"cafebabe"
"c0de0001"
"eb923652"
"51c3e036"
"f8de27e9"
"c27ee3e0"
"b4651d9f"
"bc4218a7"
"0244522f"
"34a5" ;
/* Plaintext packet with 2-byte header extension */
char *srtp_2bytehdrext_ref =
"900f1236"
"decafbad"
"cafebabe"
"10000001"
"05020002"
"abababab"
"abababab"
"abababab"
"abababab" ;
/* AES-CTR/HMAC-SHA1 Ciphertext packet with 2-byte header extension */
char *srtp_2bytehdrext_cryptex =
"900f1236"
"decafbad"
"cafebabe"
"c2de0001"
"4ed9cc4e"
"6a712b30"
"96c5ca77"
"339d4204"
"ce0d7739"
"6cab6958"
"5fbce381"
"94a5" ;
/* Plaintext packet with 1-byte header extension and CSRC fields. */
char *srtp_1bytehdrext_cc_ref =
"920f1238"
"decafbad"
"cafebabe"
"0001e240"
"0000b26e"
"bede0001"
"51000200"
"abababab"
"abababab"
"abababab"
"abababab" ;
char *srtp_1bytehdrext_cc_cryptex =
"920f1238"
"decafbad"
"cafebabe"
"8bb6e12b"
"5cff16dd"
"c0de0001"
"92838c8c"
"09e58393"
"e1de3a9a"
"74734d67"
"45671338"
"c3acf11d"
"a2df8423"
"bee0" ;
/* Plaintext packet with 2-byte header extension and CSRC fields. */
char *srtp_2bytehdrext_cc_ref =
"920f1239"
"decafbad"
"cafebabe"
"0001e240"
"0000b26e"
"10000001"
"05020002"
"abababab"
"abababab"
"abababab"
"abababab" ;
char *srtp_2bytehdrext_cc_cryptex =
"920f1239"
"decafbad"
"cafebabe"
"f70e513e"
"b90b9b25"
"c2de0001"
"bbed4848"
"faa64466"
"5f3d7f34"
"125914e9"
"f4d0ae92"
"3c6f479b"
"95a0f7b5"
"3133" ;
/* Plaintext packet with empty 1-byte header extension and CSRC fields. */
char *srtp_1byte_empty_hdrext_cc_ref =
"920f123a"
"decafbad"
"cafebabe"
"0001e240"
"0000b26e"
"bede0000"
"abababab"
"abababab"
"abababab"
"abababab" ;
char *srtp_1byte_empty_hdrext_cc_cryptex =
"920f123a"
"decafbad"
"cafebabe"
"7130b6ab"
"fe2ab0e3"
"c0de0000"
"e3d9f64b"
"25c9e74c"
"b4cf8e43"
"fb92e378"
"1c2c0cea"
"b6b3a499"
"a14c" ;
/* Plaintext packet with empty 2-byte header extension and CSRC fields. */
char *srtp_2byte_empty_hdrext_cc_ref =
"920f123b"
"decafbad"
"cafebabe"
"0001e240"
"0000b26e"
"10000000"
"abababab"
"abababab"
"abababab"
"abababab" ;
char *srtp_2byte_empty_hdrext_cc_cryptex =
"920f123b"
"decafbad"
"cafebabe"
"cbf24c12"
"4330e1c8"
"c2de0000"
"599dd45b"
"c9d687b6"
"03e8b59d"
"771fd38e"
"88b170e0"
"cd31e125"
"eabe" ;
// clang-format on
const struct test_vectors_t vectors[6 ] = {
{ "Plaintext packet with 1-byte header extension" , srtp_1bytehdrext_ref,
srtp_1bytehdrext_cryptex },
{ "Plaintext packet with 2-byte header extension" , srtp_2bytehdrext_ref,
srtp_2bytehdrext_cryptex },
{ "Plaintext packet with 1-byte header extension and CSRC fields" ,
srtp_1bytehdrext_cc_ref, srtp_1bytehdrext_cc_cryptex },
{ "Plaintext packet with 2-byte header extension and CSRC fields" ,
srtp_2bytehdrext_cc_ref, srtp_2bytehdrext_cc_cryptex },
{ "Plaintext packet with empty 1-byte header extension and CSRC fields" ,
srtp_1byte_empty_hdrext_cc_ref, srtp_1byte_empty_hdrext_cc_cryptex },
{ "Plaintext packet with empty 2-byte header extension and CSRC fields" ,
srtp_2byte_empty_hdrext_cc_ref, srtp_2byte_empty_hdrext_cc_cryptex },
};
const size_t num_vectors = sizeof (vectors) / sizeof (vectors[0 ]);
srtp_t srtp_snd, srtp_recv;
int len, ref_len, enc_len;
srtp_policy_t policy;
/*
* create a session with a single stream using the default srtp
* policy and with the SSRC value 0 xcafebabe
*/
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_rtp_default(&policy.rtp);
srtp_crypto_policy_set_rtcp_default(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
for (size_t i = 0 ; i < num_vectors; ++i) {
char packet[1400 ];
char reference[1400 ];
char ciphertext[1400 ];
/* Initialize reference test vectors */
ref_len = hex_string_to_octet_string(reference, vectors[i].plaintext,
sizeof (reference)) /
2 ;
enc_len = hex_string_to_octet_string(ciphertext, vectors[i].ciphertext,
sizeof (ciphertext)) /
2 ;
/* Initialize test packet */
len = ref_len;
memcpy(packet, reference, len);
printf("%s\n" , vectors[i].name);
/*
* protect plaintext , then compare with ciphertext
*/
debug_print(mod_driver, "test vector: %s\n" , vectors[i].name);
CHECK_OK(srtp_create(&srtp_snd, &policy));
CHECK_OK(srtp_set_stream_use_cryptex(srtp_snd, &policy.ssrc, 1 ));
CHECK_OK(srtp_protect(srtp_snd, packet, &len));
CHECK(len == enc_len);
debug_print(mod_driver, "ciphertext:\n %s" ,
octet_string_hex_string(packet, len));
debug_print(mod_driver, "ciphertext reference:\n %s" ,
octet_string_hex_string(ciphertext, len));
CHECK_BUFFER_EQUAL(packet, ciphertext, len);
CHECK_OK(srtp_dealloc(srtp_snd));
CHECK_OK(srtp_create(&srtp_recv, &policy));
CHECK_OK(srtp_set_stream_use_cryptex(srtp_recv, &policy.ssrc, 1 ));
/*
* unprotect ciphertext , then compare with plaintext
*/
CHECK_OK(srtp_unprotect(srtp_recv, packet, &len));
CHECK(len == ref_len);
CHECK_BUFFER_EQUAL(packet, reference, len);
CHECK_OK(srtp_dealloc(srtp_recv));
}
return srtp_err_status_ok;
}
srtp_err_status_t srtp_test_cryptex_csrc_but_no_extension_header(void )
{
// clang-format off
/* Plaintext packet with no header extension but CSRC fields. */
char *srtp_cc_ref =
"820f1238"
"decafbad"
"cafebabe"
"0001e240"
"0000b26e"
"abababab"
"abababab"
"abababab"
"abababab" ;
// clang-format on
/*
* create a session with a single stream using the default srtp
* policy and with the SSRC value 0 xcafebabe
*/
srtp_policy_t policy;
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_rtp_default(&policy.rtp);
srtp_crypto_policy_set_rtcp_default(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
srtp_t srtp_snd;
CHECK_OK(srtp_create(&srtp_snd, &policy));
CHECK_OK(srtp_set_stream_use_cryptex(srtp_snd, &policy.ssrc, 1 ));
char packet[1400 ];
int packet_len =
hex_string_to_octet_string(packet, srtp_cc_ref, sizeof (packet)) / 2 ;
CHECK_RETURN(srtp_protect(srtp_snd, packet, &packet_len),
srtp_err_status_cryptex_err);
CHECK_OK(srtp_dealloc(srtp_snd));
return srtp_err_status_ok;
}
srtp_err_status_t srtp_test_cryptex_disable(void )
{
srtp_policy_t policy;
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_rtp_default(&policy.rtp);
srtp_crypto_policy_set_rtcp_default(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
srtp_t srtp_snd, srtp_recv;
CHECK_OK(srtp_create(&srtp_snd, &policy));
CHECK_OK(srtp_set_stream_use_cryptex(srtp_snd, &policy.ssrc, 1 ));
CHECK_OK(srtp_create(&srtp_recv, &policy));
CHECK_OK(srtp_set_stream_use_cryptex(srtp_recv, &policy.ssrc, 1 ));
int packet_len;
srtp_hdr_t *packet =
srtp_create_test_packet_ext_hdr(100 , policy.ssrc.value, &packet_len);
uint8_t clear_text[1400 ];
memcpy(clear_text, packet, packet_len);
int clear_text_len = packet_len;
CHECK_OK(srtp_protect(srtp_snd, packet, &packet_len));
CHECK(packet_len > clear_text_len);
CHECK(srtp_octet_string_is_eq((uint8_t *)packet, clear_text,
clear_text_len) != 0 );
// clear text uses original one byte header extension profile
CHECK(srtp_get_xtn_profile(clear_text) == 0 xbede);
// packet uses cryptex one byte header extension profile
CHECK(srtp_get_xtn_profile((uint8_t *)packet) == 0 xc0de);
CHECK_OK(srtp_unprotect(srtp_recv, packet, &packet_len));
CHECK(packet_len == clear_text_len);
CHECK_BUFFER_EQUAL((char *)packet, (char *)clear_text, clear_text_len);
// update squence number for next packet
srtp_hdr_t *hdr = (srtp_hdr_t *)packet;
hdr->seq = htons(ntohs(hdr->seq) + 1 );
memcpy(clear_text, packet, packet_len);
// disbale cryptex at sender only
CHECK_OK(srtp_set_stream_use_cryptex(srtp_snd, &policy.ssrc, 0 ));
CHECK_OK(srtp_protect(srtp_snd, packet, &packet_len));
CHECK(packet_len > clear_text_len);
CHECK(srtp_octet_string_is_eq((uint8_t *)packet, clear_text,
clear_text_len) != 0 );
// both use original one byte header extension profile as cryptex is
// disabled
CHECK(srtp_get_xtn_profile(clear_text) == 0 xbede);
CHECK(srtp_get_xtn_profile((uint8_t *)packet) == 0 xbede);
// unprotect should work as cryptex is detected dynamically
CHECK_OK(srtp_unprotect(srtp_recv, packet, &packet_len));
CHECK(packet_len == clear_text_len);
CHECK_BUFFER_EQUAL((char *)packet, (char *)clear_text, clear_text_len);
free(packet);
CHECK_OK(srtp_dealloc(srtp_snd));
CHECK_OK(srtp_dealloc(srtp_recv));
return srtp_err_status_ok;
}
#ifdef GCM
/*
* srtp_validate_gcm ( ) verifies the correctness of libsrtp by comparing
* an computed packet against the known ciphertext for the plaintext .
*/
srtp_err_status_t srtp_validate_gcm(void )
{
// clang-format off
uint8_t rtp_plaintext_ref[28 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab
};
uint8_t rtp_plaintext[44 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00, 0 x00, 0 x00
};
uint8_t srtp_ciphertext[44 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xc5, 0 x00, 0 x2e, 0 xde,
0 x04, 0 xcf, 0 xdd, 0 x2e, 0 xb9, 0 x11, 0 x59, 0 xe0,
0 x88, 0 x0a, 0 xa0, 0 x6e, 0 xd2, 0 x97, 0 x68, 0 x26,
0 xf7, 0 x96, 0 xb2, 0 x01, 0 xdf, 0 x31, 0 x31, 0 xa1,
0 x27, 0 xe8, 0 xa3, 0 x92
};
uint8_t rtcp_plaintext_ref[24 ] = {
0 x81, 0 xc8, 0 x00, 0 x0b, 0 xca, 0 xfe, 0 xba, 0 xbe,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
};
uint8_t rtcp_plaintext[44 ] = {
0 x81, 0 xc8, 0 x00, 0 x0b, 0 xca, 0 xfe, 0 xba, 0 xbe,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00, 0 x00, 0 x00
};
uint8_t srtcp_ciphertext[44 ] = {
0 x81, 0 xc8, 0 x00, 0 x0b, 0 xca, 0 xfe, 0 xba, 0 xbe,
0 xc9, 0 x8b, 0 x8b, 0 x5d, 0 xf0, 0 x39, 0 x2a, 0 x55,
0 x85, 0 x2b, 0 x6c, 0 x21, 0 xac, 0 x8e, 0 x70, 0 x25,
0 xc5, 0 x2c, 0 x6f, 0 xbe, 0 xa2, 0 xb3, 0 xb4, 0 x46,
0 xea, 0 x31, 0 x12, 0 x3b, 0 xa8, 0 x8c, 0 xe6, 0 x1e,
0 x80, 0 x00, 0 x00, 0 x01
};
// clang-format on
srtp_t srtp_snd, srtp_recv;
srtp_err_status_t status;
int len;
srtp_policy_t policy;
/*
* create a session with a single stream using the default srtp
* policy and with the SSRC value 0 xcafebabe
*/
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy.rtp);
srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key_gcm;
policy.deprecated_ekt = NULL;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
status = srtp_create(&srtp_snd, &policy);
if (status) {
return status;
}
/*
* protect plaintext rtp , then compare with srtp ciphertext
*/
len = 28 ;
status = srtp_protect(srtp_snd, rtp_plaintext, &len);
if (status || (len != 44 )) {
return srtp_err_status_fail;
}
debug_print(mod_driver, "srtp ciphertext:\n %s" ,
octet_string_hex_string(rtp_plaintext, len));
debug_print(mod_driver, "srtp ciphertext reference:\n %s" ,
octet_string_hex_string(srtp_ciphertext, len));
if (srtp_octet_string_is_eq(rtp_plaintext, srtp_ciphertext, len)) {
return srtp_err_status_fail;
}
/*
* protect plaintext rtcp, then compare with srtcp ciphertext
*/
len = 24 ;
status = srtp_protect_rtcp(srtp_snd, rtcp_plaintext, &len);
if (status || (len != 44 )) {
return srtp_err_status_fail;
}
debug_print(mod_driver, "srtcp ciphertext:\n %s" ,
octet_string_hex_string(rtcp_plaintext, len));
debug_print(mod_driver, "srtcp ciphertext reference:\n %s" ,
octet_string_hex_string(srtcp_ciphertext, len));
if (srtp_octet_string_is_eq(rtcp_plaintext, srtcp_ciphertext, len)) {
return srtp_err_status_fail;
}
/*
* create a receiver session context comparable to the one created
* above - we need to do this so that the replay checking doesn ' t
* complain
*/
status = srtp_create(&srtp_recv, &policy);
if (status) {
return status;
}
/*
* unprotect srtp ciphertext , then compare with rtp plaintext
*/
len = 44 ;
status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len);
if (status || (len != 28 )) {
return status;
}
if (srtp_octet_string_is_eq(srtp_ciphertext, rtp_plaintext_ref, len)) {
return srtp_err_status_fail;
}
/*
* unprotect srtcp ciphertext , then compare with rtcp plaintext
*/
len = 44 ;
status = srtp_unprotect_rtcp(srtp_recv, srtcp_ciphertext, &len);
if (status || (len != 24 )) {
return status;
}
debug_print(mod_driver, "srtcp plain:\n %s" ,
octet_string_hex_string(srtcp_ciphertext, len));
debug_print(mod_driver, "srtcp plain reference:\n %s" ,
octet_string_hex_string(rtcp_plaintext_ref,
sizeof (rtcp_plaintext_ref)));
if (srtp_octet_string_is_eq(srtcp_ciphertext, rtcp_plaintext_ref, len)) {
return srtp_err_status_fail;
}
status = srtp_dealloc(srtp_snd);
if (status) {
return status;
}
status = srtp_dealloc(srtp_recv);
if (status) {
return status;
}
return srtp_err_status_ok;
}
/*
* srtp_validate_gcm ( ) verifies the correctness of libsrtp by comparing
* an computed packet against the known ciphertext for the plaintext .
*/
srtp_err_status_t srtp_validate_gcm_cryptex(void )
{
// clang-format off
unsigned char test_key_gcm_cryptex[28 ] = {
0 x00, 0 x01, 0 x02, 0 x03, 0 x04, 0 x05, 0 x06, 0 x07,
0 x08, 0 x09, 0 x0a, 0 x0b, 0 x0c, 0 x0d, 0 x0e, 0 x0f,
0 xa0, 0 xa1, 0 xa2, 0 xa3, 0 xa4, 0 xa5, 0 xa6, 0 xa7,
0 xa8, 0 xa9, 0 xaa, 0 xab
};
/* Plaintext packet with 1-byte header extension */
char *srtp_1bytehdrext_ref =
"900f1235"
"decafbad"
"cafebabe"
"bede0001"
"51000200"
"abababab"
"abababab"
"abababab"
"abababab" ;
/* GCM Ciphertext packet with 1-byte header extension */
char *srtp_1bytehdrext_cryptex_gcm =
"900f1235"
"decafbad"
"cafebabe"
"c0de0001"
"39972dc9"
"572c4d99"
"e8fc355d"
"e743fb2e"
"94f9d8ff"
"54e72f41"
"93bbc5c7"
"4ffab0fa"
"9fa0fbeb" ;
/* Plaintext packet with 2-byte header extension */
char *srtp_2bytehdrext_ref =
"900f1236"
"decafbad"
"cafebabe"
"10000001"
"05020002"
"abababab"
"abababab"
"abababab"
"abababab" ;
/* GCM Ciphertext packet with 2-byte header extension */
char *srtp_2bytehdrext_cryptex_gcm =
"900f1236"
"decafbad"
"cafebabe"
"c2de0001"
"bb75a4c5"
"45cd1f41"
"3bdb7daa"
"2b1e3263"
"de313667"
"c9632490"
"81b35a65"
"f5cb6c88"
"b394235f" ;
/* Plaintext packet with 1-byte header extension and CSRC fields. */
char *srtp_1bytehdrext_cc_ref =
"920f1238"
"decafbad"
"cafebabe"
"0001e240"
"0000b26e"
"bede0001"
"51000200"
"abababab"
"abababab"
"abababab"
"abababab" ;
char *srtp_1bytehdrext_cc_cryptex_gcm =
"920f1238"
"decafbad"
"cafebabe"
"63bbccc4"
"a7f695c4"
"c0de0001"
"8ad7c71f"
"ac70a80c"
"92866b4c"
"6ba98546"
"ef913586"
"e95ffaaf"
"fe956885"
"bb0647a8"
"bc094ac8" ;
/* Plaintext packet with 2-byte header extension and CSRC fields. */
char *srtp_2bytehdrext_cc_ref =
"920f1239"
"decafbad"
"cafebabe"
"0001e240"
"0000b26e"
"10000001"
"05020002"
"abababab"
"abababab"
"abababab"
"abababab" ;
char *srtp_2bytehdrext_cc_cryptex_gcm =
"920f1239"
"decafbad"
"cafebabe"
"3680524f"
"8d312b00"
"c2de0001"
"c78d1200"
"38422bc1"
"11a7187a"
"18246f98"
"0c059cc6"
"bc9df8b6"
"26394eca"
"344e4b05"
"d80fea83" ;
/* Plaintext packet with empty 1-byte header extension and CSRC fields. */
char *srtp_1byte_empty_hdrext_cc_ref =
"920f123a"
"decafbad"
"cafebabe"
"0001e240"
"0000b26e"
"bede0000"
"abababab"
"abababab"
"abababab"
"abababab" ;
char *srtp_1byte_empty_hdrext_cc_cryptex_gcm =
"920f123a"
"decafbad"
"cafebabe"
"15b6bb43"
"37906fff"
"c0de0000"
"b7b96453"
"7a2b03ab"
"7ba5389c"
"e9331712"
"6b5d974d"
"f30c6884"
"dcb651c5"
"e120c1da" ;
/* Plaintext packet with empty 2-byte header extension and CSRC fields. */
char *srtp_2byte_empty_hdrext_cc_ref =
"920f123b"
"decafbad"
"cafebabe"
"0001e240"
"0000b26e"
"10000000"
"abababab"
"abababab"
"abababab"
"abababab" ;
char *srtp_2byte_empty_hdrext_cc_cryptex_gcm =
"920f123b"
"decafbad"
"cafebabe"
"dcb38c9e"
"48bf95f4"
"c2de0000"
"61ee432c"
"f9203170"
"76613258"
"d3ce4236"
"c06ac429"
"681ad084"
"13512dc9"
"8b5207d8" ;
// clang-format on
const struct test_vectors_t vectors[6 ] = {
{ "Plaintext packet with 1-byte header extension" , srtp_1bytehdrext_ref,
srtp_1bytehdrext_cryptex_gcm },
{ "Plaintext packet with 2-byte header extension" , srtp_2bytehdrext_ref,
srtp_2bytehdrext_cryptex_gcm },
{ "Plaintext packet with 1-byte header extension and CSRC fields" ,
srtp_1bytehdrext_cc_ref, srtp_1bytehdrext_cc_cryptex_gcm },
{ "Plaintext packet with 2-byte header extension and CSRC fields" ,
srtp_2bytehdrext_cc_ref, srtp_2bytehdrext_cc_cryptex_gcm },
{ "Plaintext packet with empty 1-byte header extension and CSRC fields" ,
srtp_1byte_empty_hdrext_cc_ref,
srtp_1byte_empty_hdrext_cc_cryptex_gcm },
{ "Plaintext packet with empty 2-byte header extension and CSRC fields" ,
srtp_2byte_empty_hdrext_cc_ref,
srtp_2byte_empty_hdrext_cc_cryptex_gcm },
};
const size_t num_vectors = sizeof (vectors) / sizeof (vectors[0 ]);
srtp_t srtp_snd, srtp_recv;
int len, ref_len, enc_len;
srtp_policy_t policy;
/*
* create a session with a single stream using the default srtp
* policy and with the SSRC value 0 xcafebabe
*/
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy.rtp);
srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key_gcm_cryptex;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
CHECK_OK(srtp_create(&srtp_snd, &policy));
CHECK_OK(srtp_set_stream_use_cryptex(srtp_snd, &policy.ssrc, 1 ));
for (size_t i = 0 ; i < num_vectors; ++i) {
char packet[1400 ];
char reference[1400 ];
char ciphertext[1400 ];
/* Initialize reference test vectors */
ref_len = hex_string_to_octet_string(reference, vectors[i].plaintext,
sizeof (reference)) /
2 ;
enc_len = hex_string_to_octet_string(ciphertext, vectors[i].ciphertext,
sizeof (ciphertext)) /
2 ;
/* Initialize test packet */
len = ref_len;
memcpy(packet, reference, len);
printf("%s\n" , vectors[i].name);
/*
* protect plaintext , then compare with ciphertext
*/
debug_print(mod_driver, "test vector: %s\n" , vectors[i].name);
CHECK_OK(srtp_protect(srtp_snd, packet, &len));
CHECK(len == enc_len);
debug_print(mod_driver, "ciphertext:\n %s" ,
octet_string_hex_string(packet, len));
debug_print(mod_driver, "ciphertext reference:\n %s" ,
octet_string_hex_string(ciphertext, len));
CHECK_BUFFER_EQUAL(packet, ciphertext, len);
/*
* create a receiver session context comparable to the one created
* above - we need to do this so that the replay checking doesn ' t
* complain
*/
CHECK_OK(srtp_create(&srtp_recv, &policy));
CHECK_OK(srtp_set_stream_use_cryptex(srtp_recv, &policy.ssrc, 1 ));
/*
* unprotect ciphertext , then compare with plaintext
*/
CHECK_OK(srtp_unprotect(srtp_recv, packet, &len));
CHECK(len == ref_len);
CHECK_BUFFER_EQUAL(packet, reference, len);
CHECK_OK(srtp_dealloc(srtp_recv));
}
CHECK_OK(srtp_dealloc(srtp_snd));
return srtp_err_status_ok;
}
#endif
/*
* Test vectors taken from RFC 6904 , Appendix A
*/
srtp_err_status_t srtp_validate_encrypted_extensions_headers(void )
{
// clang-format off
unsigned char test_key_ext_headers[30 ] = {
0 xe1, 0 xf9, 0 x7a, 0 x0d, 0 x3e, 0 x01, 0 x8b, 0 xe0,
0 xd6, 0 x4f, 0 xa3, 0 x2c, 0 x06, 0 xde, 0 x41, 0 x39,
0 x0e, 0 xc6, 0 x75, 0 xad, 0 x49, 0 x8a, 0 xfe, 0 xeb,
0 xb6, 0 x96, 0 x0b, 0 x3a, 0 xab, 0 xe6
};
uint8_t srtp_plaintext_ref[56 ] = {
0 x90, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xBE, 0 xDE, 0 x00, 0 x06,
0 x17, 0 x41, 0 x42, 0 x73, 0 xA4, 0 x75, 0 x26, 0 x27,
0 x48, 0 x22, 0 x00, 0 x00, 0 xC8, 0 x30, 0 x8E, 0 x46,
0 x55, 0 x99, 0 x63, 0 x86, 0 xB3, 0 x95, 0 xFB, 0 x00,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab
};
uint8_t srtp_plaintext[66 ] = {
0 x90, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xBE, 0 xDE, 0 x00, 0 x06,
0 x17, 0 x41, 0 x42, 0 x73, 0 xA4, 0 x75, 0 x26, 0 x27,
0 x48, 0 x22, 0 x00, 0 x00, 0 xC8, 0 x30, 0 x8E, 0 x46,
0 x55, 0 x99, 0 x63, 0 x86, 0 xB3, 0 x95, 0 xFB, 0 x00,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00
};
uint8_t srtp_ciphertext[66 ] = {
0 x90, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xBE, 0 xDE, 0 x00, 0 x06,
0 x17, 0 x58, 0 x8A, 0 x92, 0 x70, 0 xF4, 0 xE1, 0 x5E,
0 x1C, 0 x22, 0 x00, 0 x00, 0 xC8, 0 x30, 0 x95, 0 x46,
0 xA9, 0 x94, 0 xF0, 0 xBC, 0 x54, 0 x78, 0 x97, 0 x00,
0 x4e, 0 x55, 0 xdc, 0 x4c, 0 xe7, 0 x99, 0 x78, 0 xd8,
0 x8c, 0 xa4, 0 xd2, 0 x15, 0 x94, 0 x9d, 0 x24, 0 x02,
0 x5a, 0 x46, 0 xb3, 0 xca, 0 x35, 0 xc5, 0 x35, 0 xa8,
0 x91, 0 xc7
};
// clang-format on
srtp_t srtp_snd, srtp_recv;
srtp_err_status_t status;
int len;
srtp_policy_t policy;
int headers[3 ] = { 1 , 3 , 4 };
/*
* create a session with a single stream using the default srtp
* policy and with the SSRC value 0 xcafebabe
*/
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_rtp_default(&policy.rtp);
srtp_crypto_policy_set_rtcp_default(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key_ext_headers;
policy.deprecated_ekt = NULL;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.enc_xtn_hdr = headers;
policy.enc_xtn_hdr_count = sizeof (headers) / sizeof (headers[0 ]);
policy.next = NULL;
status = srtp_create(&srtp_snd, &policy);
if (status)
return status;
/*
* protect plaintext , then compare with ciphertext
*/
len = sizeof (srtp_plaintext_ref);
status = srtp_protect(srtp_snd, srtp_plaintext, &len);
if (status || (len != sizeof (srtp_plaintext)))
return srtp_err_status_fail;
debug_print(mod_driver, "ciphertext:\n %s" ,
srtp_octet_string_hex_string(srtp_plaintext, len));
debug_print(mod_driver, "ciphertext reference:\n %s" ,
srtp_octet_string_hex_string(srtp_ciphertext, len));
if (srtp_octet_string_is_eq(srtp_plaintext, srtp_ciphertext, len))
return srtp_err_status_fail;
/*
* create a receiver session context comparable to the one created
* above - we need to do this so that the replay checking doesn ' t
* complain
*/
status = srtp_create(&srtp_recv, &policy);
if (status)
return status;
/*
* unprotect ciphertext , then compare with plaintext
*/
status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len);
if (status) {
return status;
} else if (len != sizeof (srtp_plaintext_ref)) {
return srtp_err_status_fail;
}
if (srtp_octet_string_is_eq(srtp_ciphertext, srtp_plaintext_ref, len))
return srtp_err_status_fail;
status = srtp_dealloc(srtp_snd);
if (status)
return status;
status = srtp_dealloc(srtp_recv);
if (status)
return status;
return srtp_err_status_ok;
}
#ifdef GCM
/*
* Headers of test vectors taken from RFC 6904 , Appendix A
*/
srtp_err_status_t srtp_validate_encrypted_extensions_headers_gcm(void )
{
// clang-format off
unsigned char test_key_ext_headers[30 ] = {
0 xe1, 0 xf9, 0 x7a, 0 x0d, 0 x3e, 0 x01, 0 x8b, 0 xe0,
0 xd6, 0 x4f, 0 xa3, 0 x2c, 0 x06, 0 xde, 0 x41, 0 x39,
0 x0e, 0 xc6, 0 x75, 0 xad, 0 x49, 0 x8a, 0 xfe, 0 xeb,
0 xb6, 0 x96, 0 x0b, 0 x3a, 0 xab, 0 xe6
};
uint8_t srtp_plaintext_ref[56 ] = {
0 x90, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xBE, 0 xDE, 0 x00, 0 x06,
0 x17, 0 x41, 0 x42, 0 x73, 0 xA4, 0 x75, 0 x26, 0 x27,
0 x48, 0 x22, 0 x00, 0 x00, 0 xC8, 0 x30, 0 x8E, 0 x46,
0 x55, 0 x99, 0 x63, 0 x86, 0 xB3, 0 x95, 0 xFB, 0 x00,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab
};
uint8_t srtp_plaintext[64 ] = {
0 x90, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xBE, 0 xDE, 0 x00, 0 x06,
0 x17, 0 x41, 0 x42, 0 x73, 0 xA4, 0 x75, 0 x26, 0 x27,
0 x48, 0 x22, 0 x00, 0 x00, 0 xC8, 0 x30, 0 x8E, 0 x46,
0 x55, 0 x99, 0 x63, 0 x86, 0 xB3, 0 x95, 0 xFB, 0 x00,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00
};
uint8_t srtp_ciphertext[64 ] = {
0 x90, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xBE, 0 xDE, 0 x00, 0 x06,
0 x17, 0 x12, 0 xe0, 0 x20, 0 x5b, 0 xfa, 0 x94, 0 x9b,
0 x1C, 0 x22, 0 x00, 0 x00, 0 xC8, 0 x30, 0 xbb, 0 x46,
0 x73, 0 x27, 0 x78, 0 xd9, 0 x92, 0 x9a, 0 xab, 0 x00,
0 x0e, 0 xca, 0 x0c, 0 xf9, 0 x5e, 0 xe9, 0 x55, 0 xb2,
0 x6c, 0 xd3, 0 xd2, 0 x88, 0 xb4, 0 x9f, 0 x6c, 0 xa9,
0 xf4, 0 xb1, 0 xb7, 0 x59, 0 x71, 0 x9e, 0 xb5, 0 xbc
};
// clang-format on
srtp_t srtp_snd, srtp_recv;
srtp_err_status_t status;
int len;
srtp_policy_t policy;
int headers[3 ] = { 1 , 3 , 4 };
/*
* create a session with a single stream using the default srtp
* policy and with the SSRC value 0 xcafebabe
*/
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtp);
srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key_ext_headers;
policy.deprecated_ekt = NULL;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.enc_xtn_hdr = headers;
policy.enc_xtn_hdr_count = sizeof (headers) / sizeof (headers[0 ]);
policy.next = NULL;
status = srtp_create(&srtp_snd, &policy);
if (status)
return status;
/*
* protect plaintext , then compare with ciphertext
*/
len = sizeof (srtp_plaintext_ref);
status = srtp_protect(srtp_snd, srtp_plaintext, &len);
if (status || (len != sizeof (srtp_plaintext)))
return srtp_err_status_fail;
debug_print(mod_driver, "ciphertext:\n %s" ,
srtp_octet_string_hex_string(srtp_plaintext, len));
debug_print(mod_driver, "ciphertext reference:\n %s" ,
srtp_octet_string_hex_string(srtp_ciphertext, len));
if (srtp_octet_string_is_eq(srtp_plaintext, srtp_ciphertext, len))
return srtp_err_status_fail;
/*
* create a receiver session context comparable to the one created
* above - we need to do this so that the replay checking doesn ' t
* complain
*/
status = srtp_create(&srtp_recv, &policy);
if (status)
return status;
/*
* unprotect ciphertext , then compare with plaintext
*/
status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len);
if (status) {
return status;
} else if (len != sizeof (srtp_plaintext_ref)) {
return srtp_err_status_fail;
}
if (srtp_octet_string_is_eq(srtp_ciphertext, srtp_plaintext_ref, len))
return srtp_err_status_fail;
status = srtp_dealloc(srtp_snd);
if (status)
return status;
status = srtp_dealloc(srtp_recv);
if (status)
return status;
return srtp_err_status_ok;
}
/*
* srtp_validate_aes_192 ( ) verifies the correctness of libsrtp by comparing
* some computed packets against some pre - computed reference values .
* These packets were made with the AES - CM - 192 / HMAC - SHA - 1 - 80 policy .
*
* The master key and master salt come from RFC 6188 section 7 . 4 .
* The test vectors where generated using the cipher key and cipher salt
* in section 7 . 4 with cipher_driver with the nonce and plaintext in the
* srtp_plaintext_ref .
*/
srtp_err_status_t srtp_validate_aes_192(void )
{
// clang-format off
uint8_t aes_192_test_key[38 ] = {
0 x73, 0 xed, 0 xc6, 0 x6c, 0 x4f, 0 xa1, 0 x57, 0 x76,
0 xfb, 0 x57, 0 xf9, 0 x50, 0 x5c, 0 x17, 0 x13, 0 x65,
0 x50, 0 xff, 0 xda, 0 x71, 0 xf3, 0 xe8, 0 xe5, 0 xf1,
0 xc8, 0 x52, 0 x2f, 0 x3a, 0 xcd, 0 x4c, 0 xe8, 0 x6d,
0 x5a, 0 xdd, 0 x78, 0 xed, 0 xbb, 0 x11
};
uint8_t srtp_plaintext_ref[28 ] = {
0 x80, 0 x0f, 0 x00, 0 x00, 0 xde, 0 xca, 0 xfb, 0 xad,
0 x00, 0 x00, 0 x00, 0 x00, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab
};
uint8_t srtp_plaintext[38 ] = {
0 x80, 0 x0f, 0 x00, 0 x00, 0 xde, 0 xca, 0 xfb, 0 xad,
0 x00, 0 x00, 0 x00, 0 x00, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00
};
uint8_t srtp_ciphertext[38 ] = {
0 x80, 0 x0f, 0 x00, 0 x00, 0 xde, 0 xca, 0 xfb, 0 xad,
0 x00, 0 x00, 0 x00, 0 x00, 0 xd9, 0 x88, 0 x65, 0 x55,
0 x2f, 0 x27, 0 x62, 0 xc3, 0 xef, 0 x37, 0 xf8, 0 x37,
0 xac, 0 xfd, 0 xb7, 0 x12, 0 x2d, 0 x6b, 0 xc4, 0 xdc,
0 x84, 0 xc7, 0 x6f, 0 x74, 0 xae, 0 xa5
};
// clang-format on
srtp_t srtp_snd, srtp_recv;
srtp_err_status_t status;
int len;
srtp_policy_t policy;
/*
* create a session with a single stream using the default srtp
* policy and with the SSRC value 0 xcafebabe
*/
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_aes_cm_192_hmac_sha1_80(&policy.rtp);
srtp_crypto_policy_set_aes_cm_192_hmac_sha1_80(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 x00000000;
policy.key = aes_192_test_key;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
status = srtp_create(&srtp_snd, &policy);
if (status)
return status;
/*
* protect plaintext , then compare with ciphertext
*/
len = 28 ;
status = srtp_protect(srtp_snd, srtp_plaintext, &len);
if (status || (len != 38 ))
return srtp_err_status_fail;
debug_print(mod_driver, "ciphertext:\n %s" ,
octet_string_hex_string(srtp_plaintext, len));
debug_print(mod_driver, "ciphertext reference:\n %s" ,
octet_string_hex_string(srtp_ciphertext, len));
if (srtp_octet_string_is_eq(srtp_plaintext, srtp_ciphertext, len))
return srtp_err_status_fail;
/*
* create a receiver session context comparable to the one created
* above - we need to do this so that the replay checking doesn ' t
* complain
*/
status = srtp_create(&srtp_recv, &policy);
if (status)
return status;
/*
* unprotect ciphertext , then compare with plaintext
*/
status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len);
if (status) {
return status;
} else if (len != 28 ) {
return srtp_err_status_fail;
}
if (srtp_octet_string_is_eq(srtp_ciphertext, srtp_plaintext_ref, len))
return srtp_err_status_fail;
status = srtp_dealloc(srtp_snd);
if (status)
return status;
status = srtp_dealloc(srtp_recv);
if (status)
return status;
return srtp_err_status_ok;
}
#endif
/*
* srtp_validate_aes_256 ( ) verifies the correctness of libsrtp by comparing
* some computed packets against some pre - computed reference values .
* These packets were made with the AES - CM - 256 / HMAC - SHA - 1 - 80 policy .
*/
srtp_err_status_t srtp_validate_aes_256(void )
{
// clang-format off
unsigned char aes_256_test_key[46 ] = {
0 xf0, 0 xf0, 0 x49, 0 x14, 0 xb5, 0 x13, 0 xf2, 0 x76,
0 x3a, 0 x1b, 0 x1f, 0 xa1, 0 x30, 0 xf1, 0 x0e, 0 x29,
0 x98, 0 xf6, 0 xf6, 0 xe4, 0 x3e, 0 x43, 0 x09, 0 xd1,
0 xe6, 0 x22, 0 xa0, 0 xe3, 0 x32, 0 xb9, 0 xf1, 0 xb6,
0 x3b, 0 x04, 0 x80, 0 x3d, 0 xe5, 0 x1e, 0 xe7, 0 xc9,
0 x64, 0 x23, 0 xab, 0 x5b, 0 x78, 0 xd2
};
uint8_t srtp_plaintext_ref[28 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab
};
uint8_t srtp_plaintext[38 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab, 0 xab,
0 xab, 0 xab, 0 xab, 0 xab, 0 x00, 0 x00, 0 x00, 0 x00,
0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00
};
uint8_t srtp_ciphertext[38 ] = {
0 x80, 0 x0f, 0 x12, 0 x34, 0 xde, 0 xca, 0 xfb, 0 xad,
0 xca, 0 xfe, 0 xba, 0 xbe, 0 xf1, 0 xd9, 0 xde, 0 x17,
0 xff, 0 x25, 0 x1f, 0 xf1, 0 xaa, 0 x00, 0 x77, 0 x74,
0 xb0, 0 xb4, 0 xb4, 0 x0d, 0 xa0, 0 x8d, 0 x9d, 0 x9a,
0 x5b, 0 x3a, 0 x55, 0 xd8, 0 x87, 0 x3b
};
// clang-format on
srtp_t srtp_snd, srtp_recv;
srtp_err_status_t status;
int len;
srtp_policy_t policy;
/*
* create a session with a single stream using the default srtp
* policy and with the SSRC value 0 xcafebabe
*/
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(&policy.rtp);
srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = aes_256_test_key;
policy.deprecated_ekt = NULL;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
status = srtp_create(&srtp_snd, &policy);
if (status) {
return status;
}
/*
* protect plaintext , then compare with ciphertext
*/
len = 28 ;
status = srtp_protect(srtp_snd, srtp_plaintext, &len);
if (status || (len != 38 )) {
return srtp_err_status_fail;
}
debug_print(mod_driver, "ciphertext:\n %s" ,
octet_string_hex_string(srtp_plaintext, len));
debug_print(mod_driver, "ciphertext reference:\n %s" ,
octet_string_hex_string(srtp_ciphertext, len));
if (srtp_octet_string_is_eq(srtp_plaintext, srtp_ciphertext, len)) {
return srtp_err_status_fail;
}
/*
* create a receiver session context comparable to the one created
* above - we need to do this so that the replay checking doesn ' t
* complain
*/
status = srtp_create(&srtp_recv, &policy);
if (status) {
return status;
}
/*
* unprotect ciphertext , then compare with plaintext
*/
status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len);
if (status || (len != 28 )) {
return status;
}
if (srtp_octet_string_is_eq(srtp_ciphertext, srtp_plaintext_ref, len)) {
return srtp_err_status_fail;
}
status = srtp_dealloc(srtp_snd);
if (status) {
return status;
}
status = srtp_dealloc(srtp_recv);
if (status) {
return status;
}
return srtp_err_status_ok;
}
srtp_err_status_t srtp_create_big_policy(srtp_policy_t **list)
{
extern const srtp_policy_t *policy_array[];
srtp_policy_t *p = NULL;
srtp_policy_t *tmp;
int i = 0 ;
uint32_t ssrc = 0 ;
/* sanity checking */
if ((list == NULL) || (policy_array[0 ] == NULL)) {
return srtp_err_status_bad_param;
}
/*
* loop over policy list , mallocing a new list and copying values
* into it ( and incrementing the SSRC value as we go along )
*/
tmp = NULL;
while (policy_array[i] != NULL) {
p = (srtp_policy_t *)malloc(sizeof (srtp_policy_t));
if (p == NULL) {
return srtp_err_status_bad_param;
}
memcpy(p, policy_array[i], sizeof (srtp_policy_t));
p->ssrc.type = ssrc_specific;
p->ssrc.value = ssrc++;
p->next = tmp;
tmp = p;
i++;
}
*list = p;
return srtp_err_status_ok;
}
srtp_err_status_t srtp_dealloc_big_policy(srtp_policy_t *list)
{
srtp_policy_t *p, *next;
for (p = list; p != NULL; p = next) {
next = p->next;
free(p);
}
return srtp_err_status_ok;
}
srtp_err_status_t srtp_test_empty_payload(void )
{
srtp_t srtp_snd, srtp_recv;
srtp_err_status_t status;
int len;
srtp_policy_t policy;
srtp_hdr_t *mesg;
/*
* create a session with a single stream using the default srtp
* policy and with the SSRC value 0 xcafebabe
*/
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_rtp_default(&policy.rtp);
srtp_crypto_policy_set_rtcp_default(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key;
policy.deprecated_ekt = NULL;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
status = srtp_create(&srtp_snd, &policy);
if (status) {
return status;
}
mesg = srtp_create_test_packet(0 , policy.ssrc.value, &len);
if (mesg == NULL) {
return srtp_err_status_fail;
}
status = srtp_protect(srtp_snd, mesg, &len);
if (status) {
return status;
} else if (len != 12 + 10 ) {
return srtp_err_status_fail;
}
/*
* create a receiver session context comparable to the one created
* above - we need to do this so that the replay checking doesn ' t
* complain
*/
status = srtp_create(&srtp_recv, &policy);
if (status) {
return status;
}
/*
* unprotect ciphertext , then compare with plaintext
*/
status = srtp_unprotect(srtp_recv, mesg, &len);
if (status) {
return status;
} else if (len != 12 ) {
return srtp_err_status_fail;
}
status = srtp_dealloc(srtp_snd);
if (status) {
return status;
}
status = srtp_dealloc(srtp_recv);
if (status) {
return status;
}
free(mesg);
return srtp_err_status_ok;
}
#ifdef GCM
srtp_err_status_t srtp_test_empty_payload_gcm(void )
{
srtp_t srtp_snd, srtp_recv;
srtp_err_status_t status;
int len;
srtp_policy_t policy;
srtp_hdr_t *mesg;
/*
* create a session with a single stream using the default srtp
* policy and with the SSRC value 0 xcafebabe
*/
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtp);
srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key;
policy.deprecated_ekt = NULL;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
status = srtp_create(&srtp_snd, &policy);
if (status) {
return status;
}
mesg = srtp_create_test_packet(0 , policy.ssrc.value, &len);
if (mesg == NULL) {
return srtp_err_status_fail;
}
status = srtp_protect(srtp_snd, mesg, &len);
if (status) {
return status;
} else if (len != 12 + 8 ) {
return srtp_err_status_fail;
}
/*
* create a receiver session context comparable to the one created
* above - we need to do this so that the replay checking doesn ' t
* complain
*/
status = srtp_create(&srtp_recv, &policy);
if (status) {
return status;
}
/*
* unprotect ciphertext , then compare with plaintext
*/
status = srtp_unprotect(srtp_recv, mesg, &len);
if (status) {
return status;
} else if (len != 12 ) {
return srtp_err_status_fail;
}
status = srtp_dealloc(srtp_snd);
if (status) {
return status;
}
status = srtp_dealloc(srtp_recv);
if (status) {
return status;
}
free(mesg);
return srtp_err_status_ok;
}
#endif // GCM
srtp_err_status_t srtp_test_remove_stream(void )
{
srtp_err_status_t status;
srtp_policy_t *policy_list, policy;
srtp_t session;
srtp_stream_t stream;
/*
* srtp_get_stream ( ) is a libSRTP internal function that we declare
* here so that we can use it to verify the correct operation of the
* library
*/
extern srtp_stream_t srtp_get_stream(srtp_t srtp, uint32_t ssrc);
status = srtp_create_big_policy(&policy_list);
if (status) {
return status;
}
status = srtp_create(&session, policy_list);
if (status) {
return status;
}
/*
* check for false positives by trying to remove a stream that ' s not
* in the session
*/
status = srtp_remove_stream(session, htonl(0 xaaaaaaaa));
if (status != srtp_err_status_no_ctx) {
return srtp_err_status_fail;
}
/*
* check for false negatives by removing stream 0 x1 , then
* searching for streams 0 x0 and 0 x2
*/
status = srtp_remove_stream(session, htonl(0 x1));
if (status != srtp_err_status_ok) {
return srtp_err_status_fail;
}
stream = srtp_get_stream(session, htonl(0 x0));
if (stream == NULL) {
return srtp_err_status_fail;
}
stream = srtp_get_stream(session, htonl(0 x2));
if (stream == NULL) {
return srtp_err_status_fail;
}
status = srtp_dealloc(session);
if (status != srtp_err_status_ok) {
return status;
}
status = srtp_dealloc_big_policy(policy_list);
if (status != srtp_err_status_ok) {
return status;
}
/* Now test adding and removing a single stream */
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_rtp_default(&policy.rtp);
srtp_crypto_policy_set_rtcp_default(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key;
policy.deprecated_ekt = NULL;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
status = srtp_create(&session, NULL);
if (status != srtp_err_status_ok) {
return status;
}
status = srtp_add_stream(session, &policy);
if (status != srtp_err_status_ok) {
return status;
}
status = srtp_remove_stream(session, htonl(0 xcafebabe));
if (status != srtp_err_status_ok) {
return status;
}
status = srtp_dealloc(session);
if (status != srtp_err_status_ok) {
return status;
}
return srtp_err_status_ok;
}
// clang-format off
unsigned char test_alt_key[46 ] = {
0 xe5, 0 x19, 0 x6f, 0 x01, 0 x5e, 0 xf1, 0 x9b, 0 xe1,
0 xd7, 0 x47, 0 xa7, 0 x27, 0 x07, 0 xd7, 0 x47, 0 x33,
0 x01, 0 xc2, 0 x35, 0 x4d, 0 x59, 0 x6a, 0 xf7, 0 x84,
0 x96, 0 x98, 0 xeb, 0 xaa, 0 xac, 0 xf6, 0 xa1, 0 x45,
0 xc7, 0 x15, 0 xe2, 0 xea, 0 xfe, 0 x55, 0 x67, 0 x96,
0 xb6, 0 x96, 0 x0b, 0 x3a, 0 xab, 0 xe6
};
// clang-format on
/*
* srtp_test_update ( ) verifies updating / rekeying exsisting streams .
* As stated in https : //tools.ietf.org/html/rfc3711#section-3.3.1
* the value of the ROC must not be reset after a rekey , this test
* atempts to prove that srtp_update does not reset the ROC .
*/
srtp_err_status_t srtp_test_update(void )
{
srtp_err_status_t status;
uint32_t ssrc = 0 x12121212;
int msg_len_octets = 32 ;
int protected_msg_len_octets;
srtp_hdr_t *msg;
srtp_t srtp_snd, srtp_recv;
srtp_policy_t policy;
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_rtp_default(&policy.rtp);
srtp_crypto_policy_set_rtcp_default(&policy.rtcp);
policy.deprecated_ekt = NULL;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
policy.key = test_key;
/* create a send and recive ctx with defualt profile and test_key */
policy.ssrc.type = ssrc_any_outbound;
status = srtp_create(&srtp_snd, &policy);
if (status)
return status;
policy.ssrc.type = ssrc_any_inbound;
status = srtp_create(&srtp_recv, &policy);
if (status)
return status;
/* protect and unprotect two msg's that will cause the ROC to be equal to 1
*/
msg = srtp_create_test_packet(msg_len_octets, ssrc,
&protected_msg_len_octets);
if (msg == NULL)
return srtp_err_status_alloc_fail;
msg->seq = htons(65535 );
status = srtp_protect(srtp_snd, msg, &protected_msg_len_octets);
if (status)
return srtp_err_status_fail;
status = srtp_unprotect(srtp_recv, msg, &protected_msg_len_octets);
if (status)
return status;
free(msg);
msg = srtp_create_test_packet(msg_len_octets, ssrc,
&protected_msg_len_octets);
if (msg == NULL)
return srtp_err_status_alloc_fail;
msg->seq = htons(1 );
status = srtp_protect(srtp_snd, msg, &protected_msg_len_octets);
if (status)
return srtp_err_status_fail;
status = srtp_unprotect(srtp_recv, msg, &protected_msg_len_octets);
if (status)
return status;
free(msg);
/* update send ctx with same test_key t verify update works*/
policy.ssrc.type = ssrc_any_outbound;
policy.key = test_key;
status = srtp_update(srtp_snd, &policy);
if (status)
return status;
msg = srtp_create_test_packet(msg_len_octets, ssrc,
&protected_msg_len_octets);
if (msg == NULL)
return srtp_err_status_alloc_fail;
msg->seq = htons(2 );
status = srtp_protect(srtp_snd, msg, &protected_msg_len_octets);
if (status)
return srtp_err_status_fail;
status = srtp_unprotect(srtp_recv, msg, &protected_msg_len_octets);
if (status)
return status;
free(msg);
/* update send ctx to use test_alt_key */
policy.ssrc.type = ssrc_any_outbound;
policy.key = test_alt_key;
status = srtp_update(srtp_snd, &policy);
if (status)
return status;
/* create and protect msg with new key and ROC still equal to 1 */
msg = srtp_create_test_packet(msg_len_octets, ssrc,
&protected_msg_len_octets);
if (msg == NULL)
return srtp_err_status_alloc_fail;
msg->seq = htons(3 );
status = srtp_protect(srtp_snd, msg, &protected_msg_len_octets);
if (status)
return srtp_err_status_fail;
/* verify that recive ctx will fail to unprotect as it still uses test_key
*/
status = srtp_unprotect(srtp_recv, msg, &protected_msg_len_octets);
if (status == srtp_err_status_ok)
return srtp_err_status_fail;
/* create a new recvieve ctx with test_alt_key but since it is new it will
* have ROC equal to 1
* and therefore should fail to unprotected */
{
srtp_t srtp_recv_roc_0;
policy.ssrc.type = ssrc_any_inbound;
policy.key = test_alt_key;
status = srtp_create(&srtp_recv_roc_0, &policy);
if (status)
return status;
status =
srtp_unprotect(srtp_recv_roc_0, msg, &protected_msg_len_octets);
if (status == srtp_err_status_ok)
return srtp_err_status_fail;
status = srtp_dealloc(srtp_recv_roc_0);
if (status)
return status;
}
/* update recive ctx to use test_alt_key */
policy.ssrc.type = ssrc_any_inbound;
policy.key = test_alt_key;
status = srtp_update(srtp_recv, &policy);
if (status)
return status;
/* verify that can still unprotect, therfore key is updated and ROC value is
* preserved */
status = srtp_unprotect(srtp_recv, msg, &protected_msg_len_octets);
if (status)
return status;
free(msg);
status = srtp_dealloc(srtp_snd);
if (status)
return status;
status = srtp_dealloc(srtp_recv);
if (status)
return status;
return srtp_err_status_ok;
}
srtp_err_status_t srtp_test_setup_protect_trailer_streams(
srtp_t *srtp_send,
srtp_t *srtp_send_mki,
srtp_t *srtp_send_aes_gcm,
srtp_t *srtp_send_aes_gcm_mki)
{
srtp_err_status_t status;
srtp_policy_t policy;
srtp_policy_t policy_mki;
#ifdef GCM
srtp_policy_t policy_aes_gcm;
srtp_policy_t policy_aes_gcm_mki;
#else
(void )srtp_send_aes_gcm;
(void )srtp_send_aes_gcm_mki;
#endif // GCM
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_rtp_default(&policy.rtp);
srtp_crypto_policy_set_rtcp_default(&policy.rtcp);
policy.deprecated_ekt = NULL;
policy.window_size = 128 ;
policy.allow_repeat_tx = 0 ;
policy.next = NULL;
policy.ssrc.type = ssrc_any_outbound;
policy.key = test_key;
memset(&policy_mki, 0 , sizeof (policy_mki));
srtp_crypto_policy_set_rtp_default(&policy_mki.rtp);
srtp_crypto_policy_set_rtcp_default(&policy_mki.rtcp);
policy_mki.deprecated_ekt = NULL;
policy_mki.window_size = 128 ;
policy_mki.allow_repeat_tx = 0 ;
policy_mki.next = NULL;
policy_mki.ssrc.type = ssrc_any_outbound;
policy_mki.key = NULL;
policy_mki.keys = test_keys;
policy_mki.num_master_keys = 2 ;
#ifdef GCM
memset(&policy_aes_gcm, 0 , sizeof (policy_aes_gcm));
srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy_aes_gcm.rtp);
srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy_aes_gcm.rtcp);
policy_aes_gcm.deprecated_ekt = NULL;
policy_aes_gcm.window_size = 128 ;
policy_aes_gcm.allow_repeat_tx = 0 ;
policy_aes_gcm.next = NULL;
policy_aes_gcm.ssrc.type = ssrc_any_outbound;
policy_aes_gcm.key = test_key;
memset(&policy_aes_gcm_mki, 0 , sizeof (policy_aes_gcm_mki));
srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy_aes_gcm_mki.rtp);
srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy_aes_gcm_mki.rtcp);
policy_aes_gcm_mki.deprecated_ekt = NULL;
policy_aes_gcm_mki.window_size = 128 ;
policy_aes_gcm_mki.allow_repeat_tx = 0 ;
policy_aes_gcm_mki.next = NULL;
policy_aes_gcm_mki.ssrc.type = ssrc_any_outbound;
policy_aes_gcm_mki.key = NULL;
policy_aes_gcm_mki.keys = test_keys;
policy_aes_gcm_mki.num_master_keys = 2 ;
#endif // GCM
/* create a send ctx with defualt profile and test_key */
status = srtp_create(srtp_send, &policy);
if (status)
return status;
status = srtp_create(srtp_send_mki, &policy_mki);
if (status)
return status;
#ifdef GCM
status = srtp_create(srtp_send_aes_gcm, &policy_aes_gcm);
if (status)
return status;
status = srtp_create(srtp_send_aes_gcm_mki, &policy_aes_gcm_mki);
if (status)
return status;
#endif // GCM
return srtp_err_status_ok;
}
srtp_err_status_t srtp_test_protect_trailer_length(void )
{
srtp_t srtp_send;
srtp_t srtp_send_mki;
srtp_t srtp_send_aes_gcm;
srtp_t srtp_send_aes_gcm_mki;
uint32_t length = 0 ;
srtp_err_status_t status;
srtp_test_setup_protect_trailer_streams(
&srtp_send, &srtp_send_mki, &srtp_send_aes_gcm, &srtp_send_aes_gcm_mki);
status = srtp_get_protect_trailer_length(srtp_send, 0 , 0 , &length);
if (status)
return status;
/* TAG Length: 10 bytes */
if (length != 10 )
return srtp_err_status_fail;
status = srtp_get_protect_trailer_length(srtp_send_mki, 1 , 1 , &length);
if (status)
return status;
/* TAG Length: 10 bytes + MKI length: 4 bytes*/
if (length != 14 )
return srtp_err_status_fail;
#ifdef GCM
status = srtp_get_protect_trailer_length(srtp_send_aes_gcm, 0 , 0 , &length);
if (status)
return status;
/* TAG Length: 16 bytes */
if (length != 16 )
return srtp_err_status_fail;
status =
srtp_get_protect_trailer_length(srtp_send_aes_gcm_mki, 1 , 1 , &length);
if (status)
return status;
/* TAG Length: 16 bytes + MKI length: 4 bytes*/
if (length != 20 )
return srtp_err_status_fail;
#endif // GCM
srtp_dealloc(srtp_send);
srtp_dealloc(srtp_send_mki);
#ifdef GCM
srtp_dealloc(srtp_send_aes_gcm);
srtp_dealloc(srtp_send_aes_gcm_mki);
#endif
return srtp_err_status_ok;
}
srtp_err_status_t srtp_test_protect_rtcp_trailer_length(void )
{
srtp_t srtp_send;
srtp_t srtp_send_mki;
srtp_t srtp_send_aes_gcm;
srtp_t srtp_send_aes_gcm_mki;
uint32_t length = 0 ;
srtp_err_status_t status;
srtp_test_setup_protect_trailer_streams(
&srtp_send, &srtp_send_mki, &srtp_send_aes_gcm, &srtp_send_aes_gcm_mki);
status = srtp_get_protect_rtcp_trailer_length(srtp_send, 0 , 0 , &length);
if (status)
return status;
/* TAG Length: 10 bytes + SRTCP Trailer 4 bytes*/
if (length != 14 )
return srtp_err_status_fail;
status = srtp_get_protect_rtcp_trailer_length(srtp_send_mki, 1 , 1 , &length);
if (status)
return status;
/* TAG Length: 10 bytes + SRTCP Trailer 4 bytes + MKI 4 bytes*/
if (length != 18 )
return srtp_err_status_fail;
#ifdef GCM
status =
srtp_get_protect_rtcp_trailer_length(srtp_send_aes_gcm, 0 , 0 , &length);
if (status)
return status;
/* TAG Length: 16 bytes + SRTCP Trailer 4 bytes*/
if (length != 20 )
return srtp_err_status_fail;
status = srtp_get_protect_rtcp_trailer_length(srtp_send_aes_gcm_mki, 1 , 1 ,
&length);
if (status)
return status;
/* TAG Length: 16 bytes + SRTCP Trailer 4 bytes + MKI 4 bytes*/
if (length != 24 )
return srtp_err_status_fail;
#endif // GCM
srtp_dealloc(srtp_send);
srtp_dealloc(srtp_send_mki);
#ifdef GCM
srtp_dealloc(srtp_send_aes_gcm);
srtp_dealloc(srtp_send_aes_gcm_mki);
#endif
return srtp_err_status_ok;
}
srtp_err_status_t srtp_test_out_of_order_after_rollover(void )
{
srtp_err_status_t status;
srtp_policy_t sender_policy;
srtp_t sender_session;
srtp_policy_t receiver_policy;
srtp_t receiver_session;
const uint32_t num_pkts = 5 ;
srtp_hdr_t *pkts[5 ];
int pkt_len_octets[5 ];
uint32_t i;
uint32_t stream_roc;
/* Create sender */
memset(&sender_policy, 0 , sizeof (sender_policy));
#ifdef GCM
srtp_crypto_policy_set_aes_gcm_128_16_auth(&sender_policy.rtp);
srtp_crypto_policy_set_aes_gcm_128_16_auth(&sender_policy.rtcp);
sender_policy.key = test_key_gcm;
#else
srtp_crypto_policy_set_rtp_default(&sender_policy.rtp);
srtp_crypto_policy_set_rtcp_default(&sender_policy.rtcp);
sender_policy.key = test_key;
#endif
sender_policy.ssrc.type = ssrc_specific;
sender_policy.ssrc.value = 0 xcafebabe;
sender_policy.window_size = 128 ;
status = srtp_create(&sender_session, &sender_policy);
if (status) {
return status;
}
/* Create the receiver */
memset(&receiver_policy, 0 , sizeof (receiver_policy));
#ifdef GCM
srtp_crypto_policy_set_aes_gcm_128_16_auth(&receiver_policy.rtp);
srtp_crypto_policy_set_aes_gcm_128_16_auth(&receiver_policy.rtcp);
receiver_policy.key = test_key_gcm;
#else
srtp_crypto_policy_set_rtp_default(&receiver_policy.rtp);
srtp_crypto_policy_set_rtcp_default(&receiver_policy.rtcp);
receiver_policy.key = test_key;
#endif
receiver_policy.ssrc.type = ssrc_specific;
receiver_policy.ssrc.value = sender_policy.ssrc.value;
receiver_policy.window_size = 128 ;
status = srtp_create(&receiver_session, &receiver_policy);
if (status) {
return status;
}
/* Create and protect packets to get to get roc == 1 */
pkts[0 ] = srtp_create_test_packet_extended(64 , sender_policy.ssrc.value,
65534 , 0 , &pkt_len_octets[0 ]);
status = srtp_protect(sender_session, pkts[0 ], &pkt_len_octets[0 ]);
if (status) {
return status;
}
status = srtp_get_stream_roc(sender_session, sender_policy.ssrc.value,
&stream_roc);
if (status) {
return status;
}
if (stream_roc != 0 ) {
return srtp_err_status_fail;
}
pkts[1 ] = srtp_create_test_packet_extended(64 , sender_policy.ssrc.value,
65535 , 1 , &pkt_len_octets[1 ]);
status = srtp_protect(sender_session, pkts[1 ], &pkt_len_octets[1 ]);
if (status) {
return status;
}
status = srtp_get_stream_roc(sender_session, sender_policy.ssrc.value,
&stream_roc);
if (status) {
return status;
}
if (stream_roc != 0 ) {
return srtp_err_status_fail;
}
pkts[2 ] = srtp_create_test_packet_extended(64 , sender_policy.ssrc.value, 0 ,
2 , &pkt_len_octets[2 ]);
status = srtp_protect(sender_session, pkts[2 ], &pkt_len_octets[2 ]);
if (status) {
return status;
}
status = srtp_get_stream_roc(sender_session, sender_policy.ssrc.value,
&stream_roc);
if (status) {
return status;
}
if (stream_roc != 1 ) {
return srtp_err_status_fail;
}
pkts[3 ] = srtp_create_test_packet_extended(64 , sender_policy.ssrc.value, 1 ,
3 , &pkt_len_octets[3 ]);
status = srtp_protect(sender_session, pkts[3 ], &pkt_len_octets[3 ]);
if (status) {
return status;
}
status = srtp_get_stream_roc(sender_session, sender_policy.ssrc.value,
&stream_roc);
if (status) {
return status;
}
if (stream_roc != 1 ) {
return srtp_err_status_fail;
}
pkts[4 ] = srtp_create_test_packet_extended(64 , sender_policy.ssrc.value, 2 ,
4 , &pkt_len_octets[4 ]);
status = srtp_protect(sender_session, pkts[4 ], &pkt_len_octets[4 ]);
if (status) {
return status;
}
status = srtp_get_stream_roc(sender_session, sender_policy.ssrc.value,
&stream_roc);
if (status) {
return status;
}
if (stream_roc != 1 ) {
return srtp_err_status_fail;
}
/* Unprotect packets in this seq order 65534, 0, 2, 1, 65535 which is
* equivalent to index 0, 2, 4, 3, 1*/
status = srtp_unprotect(receiver_session, pkts[0 ], &pkt_len_octets[0 ]);
if (status) {
return status;
}
status = srtp_get_stream_roc(receiver_session, receiver_policy.ssrc.value,
&stream_roc);
if (status) {
return status;
}
if (stream_roc != 0 ) {
return srtp_err_status_fail;
}
status = srtp_unprotect(receiver_session, pkts[2 ], &pkt_len_octets[2 ]);
if (status) {
return status;
}
status = srtp_get_stream_roc(receiver_session, receiver_policy.ssrc.value,
&stream_roc);
if (status) {
return status;
}
if (stream_roc != 1 ) {
return srtp_err_status_fail;
}
status = srtp_unprotect(receiver_session, pkts[4 ], &pkt_len_octets[4 ]);
if (status) {
return status;
}
status = srtp_get_stream_roc(receiver_session, receiver_policy.ssrc.value,
&stream_roc);
if (status) {
return status;
}
if (stream_roc != 1 ) {
return srtp_err_status_fail;
}
status = srtp_unprotect(receiver_session, pkts[3 ], &pkt_len_octets[3 ]);
if (status) {
return status;
}
status = srtp_get_stream_roc(receiver_session, receiver_policy.ssrc.value,
&stream_roc);
if (status) {
return status;
}
if (stream_roc != 1 ) {
return srtp_err_status_fail;
}
status = srtp_unprotect(receiver_session, pkts[1 ], &pkt_len_octets[1 ]);
if (status) {
return status;
}
status = srtp_get_stream_roc(receiver_session, receiver_policy.ssrc.value,
&stream_roc);
if (status) {
return status;
}
if (stream_roc != 1 ) {
return srtp_err_status_fail;
}
/* Cleanup */
status = srtp_dealloc(sender_session);
if (status) {
return status;
}
status = srtp_dealloc(receiver_session);
if (status) {
return status;
}
for (i = 0 ; i < num_pkts; i++) {
free(pkts[i]);
}
return srtp_err_status_ok;
}
srtp_err_status_t srtp_test_get_roc(void )
{
srtp_err_status_t status;
srtp_policy_t policy;
srtp_t session;
srtp_hdr_t *pkt;
uint32_t i;
uint32_t roc;
uint32_t ts;
uint16_t seq;
int msg_len_octets = 32 ;
int protected_msg_len_octets;
memset(&policy, 0 , sizeof (policy));
srtp_crypto_policy_set_rtp_default(&policy.rtp);
srtp_crypto_policy_set_rtcp_default(&policy.rtcp);
policy.ssrc.type = ssrc_specific;
policy.ssrc.value = 0 xcafebabe;
policy.key = test_key;
policy.window_size = 128 ;
/* Create a sender session */
status = srtp_create(&session, &policy);
if (status) {
return status;
}
/* Set start sequence so we roll over */
seq = 65535 ;
ts = 0 ;
for (i = 0 ; i < 2 ; i++) {
pkt = srtp_create_test_packet_extended(msg_len_octets,
policy.ssrc.value, seq, ts,
&protected_msg_len_octets);
status = srtp_protect(session, pkt, &protected_msg_len_octets);
free(pkt);
if (status) {
return status;
}
status = srtp_get_stream_roc(session, policy.ssrc.value, &roc);
if (status) {
return status;
}
if (roc != i) {
return srtp_err_status_fail;
}
seq++;
ts++;
}
/* Cleanup */
status = srtp_dealloc(session);
if (status) {
return status;
}
return srtp_err_status_ok;
}
static srtp_err_status_t test_set_receiver_roc(uint32_t packets,
uint32_t roc_to_set)
{
srtp_err_status_t status;
srtp_policy_t sender_policy;
srtp_t sender_session;
srtp_policy_t receiver_policy;
srtp_t receiver_session;
srtp_hdr_t *pkt_1;
unsigned char *recv_pkt_1;
srtp_hdr_t *pkt_2;
unsigned char *recv_pkt_2;
uint32_t i;
uint32_t ts;
uint16_t seq;
uint16_t stride;
int msg_len_octets = 32 ;
int protected_msg_len_octets_1;
int protected_msg_len_octets_2;
/* Create sender */
memset(&sender_policy, 0 , sizeof (sender_policy));
#ifdef GCM
srtp_crypto_policy_set_aes_gcm_128_16_auth(&sender_policy.rtp);
srtp_crypto_policy_set_aes_gcm_128_16_auth(&sender_policy.rtcp);
sender_policy.key = test_key_gcm;
#else
srtp_crypto_policy_set_rtp_default(&sender_policy.rtp);
srtp_crypto_policy_set_rtcp_default(&sender_policy.rtcp);
sender_policy.key = test_key;
#endif
sender_policy.ssrc.type = ssrc_specific;
sender_policy.ssrc.value = 0 xcafebabe;
sender_policy.window_size = 128 ;
status = srtp_create(&sender_session, &sender_policy);
if (status) {
return status;
}
/* Create and protect packets */
i = 0 ;
seq = 0 ;
ts = 0 ;
stride = 0 x4000;
while (i < packets) {
srtp_hdr_t *tmp_pkt;
int tmp_len;
tmp_pkt = srtp_create_test_packet_extended(
msg_len_octets, sender_policy.ssrc.value, seq, ts, &tmp_len);
status = srtp_protect(sender_session, tmp_pkt, &tmp_len);
free(tmp_pkt);
if (status) {
return status;
}
while (stride > (packets - i) && stride > 1 ) {
stride >>= 1 ;
}
i += stride;
seq += stride;
ts++;
}
/* Create the first packet to decrypt and test for ROC change */
pkt_1 = srtp_create_test_packet_extended(msg_len_octets,
sender_policy.ssrc.value, seq, ts,
&protected_msg_len_octets_1);
status = srtp_protect(sender_session, pkt_1, &protected_msg_len_octets_1);
if (status) {
return status;
}
/* Create the second packet to decrypt and test for ROC change */
seq++;
ts++;
pkt_2 = srtp_create_test_packet_extended(msg_len_octets,
sender_policy.ssrc.value, seq, ts,
&protected_msg_len_octets_2);
status = srtp_protect(sender_session, pkt_2, &protected_msg_len_octets_2);
if (status) {
return status;
}
/* Create the receiver */
memset(&receiver_policy, 0 , sizeof (receiver_policy));
#ifdef GCM
srtp_crypto_policy_set_aes_gcm_128_16_auth(&receiver_policy.rtp);
srtp_crypto_policy_set_aes_gcm_128_16_auth(&receiver_policy.rtcp);
receiver_policy.key = test_key_gcm;
#else
srtp_crypto_policy_set_rtp_default(&receiver_policy.rtp);
srtp_crypto_policy_set_rtcp_default(&receiver_policy.rtcp);
receiver_policy.key = test_key;
#endif
receiver_policy.ssrc.type = ssrc_specific;
receiver_policy.ssrc.value = sender_policy.ssrc.value;
receiver_policy.window_size = 128 ;
status = srtp_create(&receiver_session, &receiver_policy);
if (status) {
return status;
}
/* Make a copy of the first sent protected packet */
recv_pkt_1 = malloc(protected_msg_len_octets_1);
if (recv_pkt_1 == NULL) {
return srtp_err_status_fail;
}
memcpy(recv_pkt_1, pkt_1, protected_msg_len_octets_1);
/* Make a copy of the second sent protected packet */
recv_pkt_2 = malloc(protected_msg_len_octets_2);
if (recv_pkt_2 == NULL) {
return srtp_err_status_fail;
}
memcpy(recv_pkt_2, pkt_2, protected_msg_len_octets_2);
/* Set the ROC to the wanted value */
status = srtp_set_stream_roc(receiver_session, receiver_policy.ssrc.value,
roc_to_set);
if (status) {
return status;
}
/* Unprotect the first packet */
status = srtp_unprotect(receiver_session, recv_pkt_1,
&protected_msg_len_octets_1);
if (status) {
return status;
}
/* Unprotect the second packet */
status = srtp_unprotect(receiver_session, recv_pkt_2,
&protected_msg_len_octets_2);
if (status) {
return status;
}
/* Cleanup */
status = srtp_dealloc(sender_session);
if (status) {
return status;
}
status = srtp_dealloc(receiver_session);
if (status) {
return status;
}
free(pkt_1);
free(recv_pkt_1);
free(pkt_2);
free(recv_pkt_2);
return srtp_err_status_ok;
}
static srtp_err_status_t test_set_sender_roc(uint16_t seq, uint32_t roc_to_set)
{
srtp_err_status_t status;
srtp_policy_t sender_policy;
srtp_t sender_session;
srtp_policy_t receiver_policy;
srtp_t receiver_session;
srtp_hdr_t *pkt;
unsigned char *recv_pkt;
uint32_t ts;
int msg_len_octets = 32 ;
int protected_msg_len_octets;
/* Create sender */
memset(&sender_policy, 0 , sizeof (sender_policy));
#ifdef GCM
srtp_crypto_policy_set_aes_gcm_128_16_auth(&sender_policy.rtp);
srtp_crypto_policy_set_aes_gcm_128_16_auth(&sender_policy.rtcp);
sender_policy.key = test_key_gcm;
#else
srtp_crypto_policy_set_rtp_default(&sender_policy.rtp);
srtp_crypto_policy_set_rtcp_default(&sender_policy.rtcp);
sender_policy.key = test_key;
#endif
sender_policy.ssrc.type = ssrc_specific;
sender_policy.ssrc.value = 0 xcafebabe;
sender_policy.window_size = 128 ;
status = srtp_create(&sender_session, &sender_policy);
if (status) {
return status;
}
/* Set the ROC before encrypting the first packet */
status = srtp_set_stream_roc(sender_session, sender_policy.ssrc.value,
roc_to_set);
if (status != srtp_err_status_ok) {
return status;
}
/* Create the packet to decrypt */
ts = 0 ;
pkt = srtp_create_test_packet_extended(msg_len_octets,
sender_policy.ssrc.value, seq, ts,
&protected_msg_len_octets);
status = srtp_protect(sender_session, pkt, &protected_msg_len_octets);
if (status) {
return status;
}
/* Create the receiver */
memset(&receiver_policy, 0 , sizeof (receiver_policy));
#ifdef GCM
srtp_crypto_policy_set_aes_gcm_128_16_auth(&receiver_policy.rtp);
srtp_crypto_policy_set_aes_gcm_128_16_auth(&receiver_policy.rtcp);
receiver_policy.key = test_key_gcm;
#else
srtp_crypto_policy_set_rtp_default(&receiver_policy.rtp);
srtp_crypto_policy_set_rtcp_default(&receiver_policy.rtcp);
receiver_policy.key = test_key;
#endif
receiver_policy.ssrc.type = ssrc_specific;
receiver_policy.ssrc.value = sender_policy.ssrc.value;
receiver_policy.window_size = 128 ;
status = srtp_create(&receiver_session, &receiver_policy);
if (status) {
return status;
}
/* Make a copy of the sent protected packet */
recv_pkt = malloc(protected_msg_len_octets);
if (recv_pkt == NULL) {
return srtp_err_status_fail;
}
memcpy(recv_pkt, pkt, protected_msg_len_octets);
/* Set the ROC to the wanted value */
status = srtp_set_stream_roc(receiver_session, receiver_policy.ssrc.value,
roc_to_set);
if (status) {
return status;
}
status =
srtp_unprotect(receiver_session, recv_pkt, &protected_msg_len_octets);
if (status) {
return status;
}
/* Cleanup */
status = srtp_dealloc(sender_session);
if (status) {
return status;
}
status = srtp_dealloc(receiver_session);
if (status) {
return status;
}
free(pkt);
free(recv_pkt);
return srtp_err_status_ok;
}
srtp_err_status_t srtp_test_set_receiver_roc(void )
{
int packets;
uint32_t roc;
srtp_err_status_t status;
/* First test does not rollover */
packets = 1 ;
roc = 0 ;
status = test_set_receiver_roc(packets - 1 , roc);
if (status) {
return status;
}
status = test_set_receiver_roc(packets, roc);
if (status) {
return status;
}
status = test_set_receiver_roc(packets + 1 , roc);
if (status) {
return status;
}
status = test_set_receiver_roc(packets + 60000 , roc);
if (status) {
return status;
}
/* Second test should rollover */
packets = 65535 ;
roc = 0 ;
status = test_set_receiver_roc(packets - 1 , roc);
if (status) {
return status;
}
status = test_set_receiver_roc(packets, roc);
if (status) {
return status;
}
/* Now the rollover counter should be 1 */
roc = 1 ;
status = test_set_receiver_roc(packets + 1 , roc);
if (status) {
return status;
}
status = test_set_receiver_roc(packets + 60000 , roc);
if (status) {
return status;
}
status = test_set_receiver_roc(packets + 65535 , roc);
if (status) {
return status;
}
return srtp_err_status_ok;
}
srtp_err_status_t srtp_test_set_sender_roc(void )
{
uint32_t roc;
uint16_t seq;
srtp_err_status_t status;
seq = 43210 ;
roc = 0 ;
status = test_set_sender_roc(seq, roc);
if (status) {
return status;
}
roc = 65535 ;
status = test_set_sender_roc(seq, roc);
if (status) {
return status;
}
roc = 0 xffff;
status = test_set_sender_roc(seq, roc);
if (status) {
return status;
}
roc = 0 xffff00;
status = test_set_sender_roc(seq, roc);
if (status) {
return status;
}
roc = 0 xfffffff0;
status = test_set_sender_roc(seq, roc);
if (status) {
return status;
}
return srtp_err_status_ok;
}
/*
* srtp policy definitions - these definitions are used above
*/
// clang-format off
unsigned char test_key[46 ] = {
0 xe1, 0 xf9, 0 x7a, 0 x0d, 0 x3e, 0 x01, 0 x8b, 0 xe0,
0 xd6, 0 x4f, 0 xa3, 0 x2c, 0 x06, 0 xde, 0 x41, 0 x39,
0 x0e, 0 xc6, 0 x75, 0 xad, 0 x49, 0 x8a, 0 xfe, 0 xeb,
0 xb6, 0 x96, 0 x0b, 0 x3a, 0 xab, 0 xe6, 0 xc1, 0 x73,
0 xc3, 0 x17, 0 xf2, 0 xda, 0 xbe, 0 x35, 0 x77, 0 x93,
0 xb6, 0 x96, 0 x0b, 0 x3a, 0 xab, 0 xe6
};
unsigned char test_key_2[46 ] = {
0 xf0, 0 xf0, 0 x49, 0 x14, 0 xb5, 0 x13, 0 xf2, 0 x76,
0 x3a, 0 x1b, 0 x1f, 0 xa1, 0 x30, 0 xf1, 0 x0e, 0 x29,
0 x98, 0 xf6, 0 xf6, 0 xe4, 0 x3e, 0 x43, 0 x09, 0 xd1,
0 xe6, 0 x22, 0 xa0, 0 xe3, 0 x32, 0 xb9, 0 xf1, 0 xb6,
0 xc3, 0 x17, 0 xf2, 0 xda, 0 xbe, 0 x35, 0 x77, 0 x93,
0 xb6, 0 x96, 0 x0b, 0 x3a, 0 xab, 0 xe6
};
unsigned char test_key_gcm[28 ] = {
0 x00, 0 x01, 0 x02, 0 x03, 0 x04, 0 x05, 0 x06, 0 x07,
0 x08, 0 x09, 0 x0a, 0 x0b, 0 x0c, 0 x0d, 0 x0e, 0 x0f,
0 xa0, 0 xa1, 0 xa2, 0 xa3, 0 xa4, 0 xa5, 0 xa6, 0 xa7,
0 xa8, 0 xa9, 0 xaa, 0 xab
};
unsigned char test_mki_id[TEST_MKI_ID_SIZE] = {
0 xe1, 0 xf9, 0 x7a, 0 x0d
};
unsigned char test_mki_id_2[TEST_MKI_ID_SIZE] = {
0 xf3, 0 xa1, 0 x46, 0 x71
};
// clang-format on
const srtp_policy_t default_policy = {
{ ssrc_any_outbound, 0 }, /* SSRC */
{
/* SRTP policy */
SRTP_AES_ICM_128, /* cipher type */
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_HMAC_SHA1, /* authentication func type */
16 , /* auth key length in octets */
10 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
{
/* SRTCP policy */
SRTP_AES_ICM_128, /* cipher type */
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_HMAC_SHA1, /* authentication func type */
16 , /* auth key length in octets */
10 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
NULL,
(srtp_master_key_t **)test_keys,
2 , /* indicates the number of Master keys */
NULL, /* indicates that EKT is not in use */
128 , /* replay window size */
0 , /* retransmission not allowed */
NULL, /* no encrypted extension headers */
0 , /* list of encrypted extension headers is empty */
NULL
};
const srtp_policy_t aes_only_policy = {
{ ssrc_any_outbound, 0 }, /* SSRC */
{
SRTP_AES_ICM_128, /* cipher type */
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_NULL_AUTH, /* authentication func type */
0 , /* auth key length in octets */
0 , /* auth tag length in octets */
sec_serv_conf /* security services flag */
},
{
SRTP_AES_ICM_128, /* cipher type */
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_NULL_AUTH, /* authentication func type */
0 , /* auth key length in octets */
0 , /* auth tag length in octets */
sec_serv_conf /* security services flag */
},
NULL,
(srtp_master_key_t **)test_keys,
2 , /* indicates the number of Master keys */
NULL, /* indicates that EKT is not in use */
128 , /* replay window size */
0 , /* retransmission not allowed */
NULL, /* no encrypted extension headers */
0 , /* list of encrypted extension headers is empty */
NULL
};
const srtp_policy_t hmac_only_policy = {
{ ssrc_any_outbound, 0 }, /* SSRC */
{
SRTP_NULL_CIPHER, /* cipher type */
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_HMAC_SHA1, /* authentication func type */
20 , /* auth key length in octets */
4 , /* auth tag length in octets */
sec_serv_auth /* security services flag */
},
{
SRTP_NULL_CIPHER, /* cipher type */
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_HMAC_SHA1, /* authentication func type */
20 , /* auth key length in octets */
4 , /* auth tag length in octets */
sec_serv_auth /* security services flag */
},
NULL,
(srtp_master_key_t **)test_keys,
2 , /* Number of Master keys associated with the policy */
NULL, /* indicates that EKT is not in use */
128 , /* replay window size */
0 , /* retransmission not allowed */
NULL, /* no encrypted extension headers */
0 , /* list of encrypted extension headers is empty */
NULL
};
#ifdef GCM
const srtp_policy_t aes128_gcm_8_policy = {
{ ssrc_any_outbound, 0 }, /* SSRC */
{
/* SRTP policy */
SRTP_AES_GCM_128, /* cipher type */
SRTP_AES_GCM_128_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_NULL_AUTH, /* authentication func type */
0 , /* auth key length in octets */
8 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
{
/* SRTCP policy */
SRTP_AES_GCM_128, /* cipher type */
SRTP_AES_GCM_128_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_NULL_AUTH, /* authentication func type */
0 , /* auth key length in octets */
8 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
NULL,
(srtp_master_key_t **)test_keys,
2 , /* indicates the number of Master keys */
NULL, /* indicates that EKT is not in use */
128 , /* replay window size */
0 , /* retransmission not allowed */
NULL, /* no encrypted extension headers */
0 , /* list of encrypted extension headers is empty */
NULL
};
const srtp_policy_t aes128_gcm_8_cauth_policy = {
{ ssrc_any_outbound, 0 }, /* SSRC */
{
/* SRTP policy */
SRTP_AES_GCM_128, /* cipher type */
SRTP_AES_GCM_128_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_NULL_AUTH, /* authentication func type */
0 , /* auth key length in octets */
8 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
{
/* SRTCP policy */
SRTP_AES_GCM_128, /* cipher type */
SRTP_AES_GCM_128_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_NULL_AUTH, /* authentication func type */
0 , /* auth key length in octets */
8 , /* auth tag length in octets */
sec_serv_auth /* security services flag */
},
NULL,
(srtp_master_key_t **)test_keys,
2 , /* indicates the number of Master keys */
NULL, /* indicates that EKT is not in use */
128 , /* replay window size */
0 , /* retransmission not allowed */
NULL, /* no encrypted extension headers */
0 , /* list of encrypted extension headers is empty */
NULL
};
const srtp_policy_t aes256_gcm_8_policy = {
{ ssrc_any_outbound, 0 }, /* SSRC */
{
/* SRTP policy */
SRTP_AES_GCM_256, /* cipher type */
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_NULL_AUTH, /* authentication func type */
0 , /* auth key length in octets */
8 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
{
/* SRTCP policy */
SRTP_AES_GCM_256, /* cipher type */
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_NULL_AUTH, /* authentication func type */
0 , /* auth key length in octets */
8 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
NULL,
(srtp_master_key_t **)test_keys,
2 , /* indicates the number of Master keys */
NULL, /* indicates that EKT is not in use */
128 , /* replay window size */
0 , /* retransmission not allowed */
NULL, /* no encrypted extension headers */
0 , /* list of encrypted extension headers is empty */
NULL
};
const srtp_policy_t aes256_gcm_8_cauth_policy = {
{ ssrc_any_outbound, 0 }, /* SSRC */
{
/* SRTP policy */
SRTP_AES_GCM_256, /* cipher type */
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_NULL_AUTH, /* authentication func type */
0 , /* auth key length in octets */
8 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
{
/* SRTCP policy */
SRTP_AES_GCM_256, /* cipher type */
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_NULL_AUTH, /* authentication func type */
0 , /* auth key length in octets */
8 , /* auth tag length in octets */
sec_serv_auth /* security services flag */
},
NULL,
(srtp_master_key_t **)test_keys,
2 , /* indicates the number of Master keys */
NULL, /* indicates that EKT is not in use */
128 , /* replay window size */
0 , /* retransmission not allowed */
NULL, /* no encrypted extension headers */
0 , /* list of encrypted extension headers is empty */
NULL
};
#endif
const srtp_policy_t null_policy = {
{ ssrc_any_outbound, 0 }, /* SSRC */
{
SRTP_NULL_CIPHER, /* cipher type */
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_NULL_AUTH, /* authentication func type */
0 , /* auth key length in octets */
0 , /* auth tag length in octets */
sec_serv_none /* security services flag */
},
{
SRTP_NULL_CIPHER, /* cipher type */
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_NULL_AUTH, /* authentication func type */
0 , /* auth key length in octets */
0 , /* auth tag length in octets */
sec_serv_none /* security services flag */
},
NULL,
(srtp_master_key_t **)test_keys,
2 , /* indicates the number of Master keys */
NULL, /* indicates that EKT is not in use */
128 , /* replay window size */
0 , /* retransmission not allowed */
NULL, /* no encrypted extension headers */
0 , /* list of encrypted extension headers is empty */
NULL
};
// clang-format off
unsigned char test_256_key[46 ] = {
0 xf0, 0 xf0, 0 x49, 0 x14, 0 xb5, 0 x13, 0 xf2, 0 x76,
0 x3a, 0 x1b, 0 x1f, 0 xa1, 0 x30, 0 xf1, 0 x0e, 0 x29,
0 x98, 0 xf6, 0 xf6, 0 xe4, 0 x3e, 0 x43, 0 x09, 0 xd1,
0 xe6, 0 x22, 0 xa0, 0 xe3, 0 x32, 0 xb9, 0 xf1, 0 xb6,
0 x3b, 0 x04, 0 x80, 0 x3d, 0 xe5, 0 x1e, 0 xe7, 0 xc9,
0 x64, 0 x23, 0 xab, 0 x5b, 0 x78, 0 xd2
};
unsigned char test_256_key_2[46 ] = {
0 xe1, 0 xf9, 0 x7a, 0 x0d, 0 x3e, 0 x01, 0 x8b, 0 xe0,
0 xd6, 0 x4f, 0 xa3, 0 x2c, 0 x06, 0 xde, 0 x41, 0 x39,
0 x0e, 0 xc6, 0 x75, 0 xad, 0 x49, 0 x8a, 0 xfe, 0 xeb,
0 xb6, 0 x96, 0 x0b, 0 x3a, 0 xab, 0 xe6, 0 xc1, 0 x73,
0 x3b, 0 x04, 0 x80, 0 x3d, 0 xe5, 0 x1e, 0 xe7, 0 xc9,
0 x64, 0 x23, 0 xab, 0 x5b, 0 x78, 0 xd2
};
srtp_master_key_t master_256_key_1 = {
test_256_key,
test_mki_id,
TEST_MKI_ID_SIZE
};
srtp_master_key_t master_256_key_2 = {
test_256_key_2,
test_mki_id_2,
TEST_MKI_ID_SIZE
};
srtp_master_key_t *test_256_keys[2 ] = {
&master_key_1,
&master_key_2
};
// clang-format on
const srtp_policy_t aes_256_hmac_policy = {
{ ssrc_any_outbound, 0 }, /* SSRC */
{
/* SRTP policy */
SRTP_AES_ICM_256, /* cipher type */
SRTP_AES_ICM_256_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_HMAC_SHA1, /* authentication func type */
20 , /* auth key length in octets */
10 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
{
/* SRTCP policy */
SRTP_AES_ICM_256, /* cipher type */
SRTP_AES_ICM_256_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_HMAC_SHA1, /* authentication func type */
20 , /* auth key length in octets */
10 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
NULL,
(srtp_master_key_t **)test_256_keys,
2 , /* indicates the number of Master keys */
NULL, /* indicates that EKT is not in use */
128 , /* replay window size */
0 , /* retransmission not allowed */
NULL, /* no encrypted extension headers */
0 , /* list of encrypted extension headers is empty */
NULL
};
const srtp_policy_t aes_256_hmac_32_policy = {
{ ssrc_any_outbound, 0 }, /* SSRC */
{
/* SRTP policy */
SRTP_AES_ICM_256, /* cipher type */
SRTP_AES_ICM_256_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_HMAC_SHA1, /* authentication func type */
20 , /* auth key length in octets */
4 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
{
/* SRTCP policy */
SRTP_AES_ICM_256, /* cipher type */
SRTP_AES_ICM_256_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_HMAC_SHA1, /* authentication func type */
20 , /* auth key length in octets */
10 , /* auth tag length in octets.
80 bits per RFC 3711. */
sec_serv_conf_and_auth /* security services flag */
},
NULL,
(srtp_master_key_t **)test_256_keys,
2 , /* indicates the number of Master keys */
NULL, /* indicates that EKT is not in use */
128 , /* replay window size */
0 , /* retransmission not allowed */
NULL, /* no encrypted extension headers */
0 , /* list of encrypted extension headers is empty */
NULL
};
char ekt_test_policy = 'x' ;
const srtp_policy_t hmac_only_with_ekt_policy = {
{ ssrc_any_outbound, 0 }, /* SSRC */
{
SRTP_NULL_CIPHER, /* cipher type */
0 , /* cipher key length in octets */
SRTP_HMAC_SHA1, /* authentication func type */
20 , /* auth key length in octets */
4 , /* auth tag length in octets */
sec_serv_auth /* security services flag */
},
{
SRTP_NULL_CIPHER, /* cipher type */
0 , /* cipher key length in octets */
SRTP_HMAC_SHA1, /* authentication func type */
20 , /* auth key length in octets */
4 , /* auth tag length in octets */
sec_serv_auth /* security services flag */
},
NULL,
(srtp_master_key_t **)test_keys,
2 , /* indicates the number of Master keys */
&ekt_test_policy, /* requests deprecated EKT functionality */
128 , /* replay window size */
0 , /* retransmission not allowed */
NULL, /* no encrypted extension headers */
0 , /* list of encrypted extension headers is empty */
NULL
};
/*
* an array of pointers to the policies listed above
*
* This array is used to test various aspects of libSRTP for
* different cryptographic policies . The order of the elements
* matters - the timing test generates output that can be used
* in a plot ( see the gnuplot script file ' timing ' ) . If you
* add to this list , you should do it at the end .
*/
// clang-format off
const srtp_policy_t *policy_array[] = {
&hmac_only_policy,
&aes_only_policy,
&default_policy,
#ifdef GCM
&aes128_gcm_8_policy,
&aes128_gcm_8_cauth_policy,
&aes256_gcm_8_policy,
&aes256_gcm_8_cauth_policy,
#endif
&null_policy,
&aes_256_hmac_policy,
&aes_256_hmac_32_policy,
NULL
};
// clang-format on
// clang-format off
const srtp_policy_t *invalid_policy_array[] = {
&hmac_only_with_ekt_policy,
NULL
};
// clang-format on
const srtp_policy_t wildcard_policy = {
{ ssrc_any_outbound, 0 }, /* SSRC */
{
/* SRTP policy */
SRTP_AES_ICM_128, /* cipher type */
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_HMAC_SHA1, /* authentication func type */
16 , /* auth key length in octets */
10 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
{
/* SRTCP policy */
SRTP_AES_ICM_128, /* cipher type */
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* cipher key length in octets */
SRTP_HMAC_SHA1, /* authentication func type */
16 , /* auth key length in octets */
10 , /* auth tag length in octets */
sec_serv_conf_and_auth /* security services flag */
},
test_key,
NULL,
0 ,
NULL,
128 , /* replay window size */
0 , /* retransmission not allowed */
NULL, /* no encrypted extension headers */
0 , /* list of encrypted extension headers is empty */
NULL
};
static srtp_stream_t stream_list_test_create_stream(uint32_t ssrc)
{
srtp_stream_t stream = malloc(sizeof (srtp_stream_ctx_t));
stream->ssrc = ssrc;
return stream;
}
static void stream_list_test_free_stream(srtp_stream_t stream)
{
free(stream);
}
int stream_list_test_count_cb(srtp_stream_t stream, void *data)
{
int *count = (int *)data;
(*count)++;
(void )stream;
return 0 ;
}
struct remove_one_data {
uint32_t ssrc;
srtp_stream_list_t list;
};
int stream_list_test_remove_one_cb(srtp_stream_t stream, void *data)
{
struct remove_one_data *d = (struct remove_one_data *)data;
if (stream->ssrc == d->ssrc) {
srtp_stream_list_remove(d->list, stream);
stream_list_test_free_stream(stream);
return 1 ;
}
return 0 ;
}
int stream_list_test_remove_all_cb(srtp_stream_t stream, void *data)
{
srtp_stream_list_t *list = (srtp_stream_list_t *)data;
srtp_stream_list_remove(*list, stream);
stream_list_test_free_stream(stream);
return 0 ;
}
srtp_err_status_t srtp_stream_list_test(void )
{
srtp_stream_list_t list;
if (srtp_stream_list_alloc(&list)) {
return srtp_err_status_fail;
}
/* add 4 streams*/
if (srtp_stream_list_insert(list, stream_list_test_create_stream(1 ))) {
return srtp_err_status_fail;
}
if (srtp_stream_list_insert(list, stream_list_test_create_stream(2 ))) {
return srtp_err_status_fail;
}
if (srtp_stream_list_insert(list, stream_list_test_create_stream(3 ))) {
return srtp_err_status_fail;
}
if (srtp_stream_list_insert(list, stream_list_test_create_stream(4 ))) {
return srtp_err_status_fail;
}
/* find */
if (srtp_stream_list_get(list, 3 ) == NULL) {
return srtp_err_status_fail;
}
if (srtp_stream_list_get(list, 1 ) == NULL) {
return srtp_err_status_fail;
}
if (srtp_stream_list_get(list, 2 ) == NULL) {
return srtp_err_status_fail;
}
if (srtp_stream_list_get(list, 4 ) == NULL) {
return srtp_err_status_fail;
}
/* find not in list */
if (srtp_stream_list_get(list, 5 )) {
return srtp_err_status_fail;
}
/* for each */
int count = 0 ;
srtp_stream_list_for_each(list, stream_list_test_count_cb, &count);
if (count != 4 ) {
return srtp_err_status_fail;
}
/* remove */
srtp_stream_t stream = srtp_stream_list_get(list, 3 );
if (stream == NULL) {
return srtp_err_status_fail;
}
srtp_stream_list_remove(list, stream);
stream_list_test_free_stream(stream);
/* find after remove */
if (srtp_stream_list_get(list, 3 )) {
return srtp_err_status_fail;
}
/* recount */
count = 0 ;
srtp_stream_list_for_each(list, stream_list_test_count_cb, &count);
if (count != 3 ) {
return srtp_err_status_fail;
}
/* remove one in for each */
struct remove_one_data data = { 2 , list };
srtp_stream_list_for_each(list, stream_list_test_remove_one_cb, &data);
/* find after remove */
if (srtp_stream_list_get(list, 2 )) {
return srtp_err_status_fail;
}
/* recount */
count = 0 ;
srtp_stream_list_for_each(list, stream_list_test_count_cb, &count);
if (count != 2 ) {
return srtp_err_status_fail;
}
/* destroy non empty list */
if (srtp_stream_list_dealloc(list) == srtp_err_status_ok) {
return srtp_err_status_fail;
}
/* remove all in for each */
srtp_stream_list_for_each(list, stream_list_test_remove_all_cb, &list);
/* recount */
count = 0 ;
srtp_stream_list_for_each(list, stream_list_test_count_cb, &count);
if (count != 0 ) {
return srtp_err_status_fail;
}
/* destroy empty list */
if (srtp_stream_list_dealloc(list)) {
return srtp_err_status_fail;
}
return srtp_err_status_ok;
}
#ifdef SRTP_USE_TEST_STREAM_LIST
/*
* A srtp_stream_list_ctx_t implementation using a single linked list
* that does not use the internal next / prev fields .
*/
struct test_list_node {
srtp_stream_t stream;
struct test_list_node *next;
};
struct srtp_stream_list_ctx_t_ {
struct test_list_node *head;
};
srtp_err_status_t srtp_stream_list_alloc(srtp_stream_list_t *list_ptr)
{
struct srtp_stream_list_ctx_t_ *l =
malloc(sizeof (struct srtp_stream_list_ctx_t_));
l->head = NULL;
*list_ptr = l;
return srtp_err_status_ok;
}
srtp_err_status_t srtp_stream_list_dealloc(srtp_stream_list_t list)
{
struct test_list_node *node = list->head;
if (node) {
return srtp_err_status_fail;
}
free(list);
return srtp_err_status_ok;
}
srtp_err_status_t srtp_stream_list_insert(srtp_stream_list_t list,
srtp_stream_t stream)
{
struct test_list_node *node = malloc(sizeof (struct test_list_node));
node->stream = stream;
node->next = list->head;
list->head = node;
return srtp_err_status_ok;
}
srtp_stream_t srtp_stream_list_get(srtp_stream_list_t list, uint32_t ssrc)
{
struct test_list_node *node = list->head;
while (node != NULL) {
if (node->stream->ssrc == ssrc)
return node->stream;
node = node->next;
}
return NULL;
}
void srtp_stream_list_remove(srtp_stream_list_t list, srtp_stream_t stream)
{
struct test_list_node **node = &(list->head);
while ((*node) != NULL) {
if ((*node)->stream->ssrc == stream->ssrc) {
struct test_list_node *tmp = (*node);
(*node) = tmp->next;
free(tmp);
return ;
}
node = &(*node)->next;
}
}
void srtp_stream_list_for_each(srtp_stream_list_t list,
int (*callback)(srtp_stream_t, void *),
void *data)
{
struct test_list_node *node = list->head;
while (node != NULL) {
struct test_list_node *tmp = node;
node = node->next;
if (callback(tmp->stream, data))
break ;
}
}
#endif
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