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| #include <srtp2/auth.h> | |
| #include <srtp2/cipher.h> | |
| #include <srtp2/crypto_types.h> | |
| #include <srtp2/srtp.h> | |
| #include <stdlib.h> | |
| #include <string.h> | |
| #include <stdio.h> | |
| char SKEL_RTP_PACKET[17] = {0x80, 0x60, 0x69, 0x8f, 0xd9, 0xc2, 0x93, 0xda, 0x1c, 0x64, 0x27, 0x82, 0x98, 0x36, 0xbe, 0x88, 0x9e}; | |
| int RTP_PACKET_SIZE = sizeof(SKEL_RTP_PACKET) + SRTP_MAX_TRAILER_LEN; | |
| uint32_t ITERATIONS = 5000000; | |
| char *populate_packet(char *dst) { | |
| static uint16_t seqnum = 0; | |
| seqnum++; | |
| memset(dst, 0x0, RTP_PACKET_SIZE); | |
| memcpy(dst, SKEL_RTP_PACKET, sizeof(SKEL_RTP_PACKET)); | |
| uint16_t *dst_seq = (uint16_t *)dst + 1; | |
| *dst_seq = htons(seqnum); | |
| return dst; | |
| } | |
| int main() { | |
| srtp_t session; | |
| srtp_policy_t policy; | |
| uint8_t key[30] = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, | |
| 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, | |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, | |
| 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D}; | |
| srtp_init(); | |
| memset(&policy, 0x0, sizeof(srtp_policy_t)); | |
| // srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32(&(policy.rtp)); | |
| // srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32(&(policy.rtcp)); | |
| 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_any_outbound; | |
| policy.key = key; | |
| policy.next = NULL; | |
| srtp_create(&session, &policy); | |
| int status; | |
| char *rtp_buffer = malloc(RTP_PACKET_SIZE); | |
| for (uint32_t i = 1; i != ITERATIONS; i++) { | |
| populate_packet(rtp_buffer); | |
| int len = sizeof(SKEL_RTP_PACKET); | |
| if ((status = srtp_protect(session, rtp_buffer, &len)) != srtp_err_status_ok) { | |
| exit(status); | |
| } | |
| } | |
| return 0; | |
| } |
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I see people are still using this , so it might be worth fixing a couple little bugs: memcpy, and setting the rtcp policy. The lack of the rtcp policy with GCM causes core dumps for me in srtp_protect. The memcpy doesn't cause an issue that I'm aware of.