#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "rtp.h"
+#include "rtpdec.h"
#include "srtp.h"
void ff_srtp_free(struct SRTPContext *s)
{
uint8_t iv[16] = { 0 }, hmac[20];
int len = *lenptr;
- int ext, av_uninit(seq_largest);
+ int av_uninit(seq_largest);
uint32_t ssrc, av_uninit(roc);
uint64_t index;
int rtcp, hmac_size;
if (!(srtcp_index & 0x80000000))
return 0;
} else {
- int csrc;
+ int ext, csrc;
s->seq_initialized = 1;
s->seq_largest = seq_largest;
s->roc = roc;
uint8_t iv[16] = { 0 }, hmac[20];
uint64_t index;
uint32_t ssrc;
- int rtcp, hmac_size;
+ int rtcp, hmac_size, padding;
uint8_t *buf;
- if (len + 14 > outlen)
- return 0;
- if (len < 12)
+ if (len < 8)
+ return AVERROR_INVALIDDATA;
+
+ rtcp = RTP_PT_IS_RTCP(in[1]);
+ hmac_size = rtcp ? s->rtcp_hmac_size : s->rtp_hmac_size;
+ padding = hmac_size;
+ if (rtcp)
+ padding += 4; // For the RTCP index
+
+ if (len + padding > outlen)
return 0;
memcpy(out, in, len);
buf = out;
- rtcp = RTP_PT_IS_RTCP(buf[1]);
- hmac_size = rtcp ? s->rtcp_hmac_size : s->rtp_hmac_size;
-
if (rtcp) {
ssrc = AV_RB32(buf + 4);
index = s->rtcp_index++;
} else {
int ext, csrc;
int seq = AV_RB16(buf + 2);
+
+ if (len < 12)
+ return AVERROR_INVALIDDATA;
+
ssrc = AV_RB32(buf + 8);
if (seq < s->seq_largest)
static const uint8_t rtp_aes128_80[] = {
// RTP header
- 0x80, 0xe0, 0x12, 0x34,
- 0x12, 0x34, 0x56, 0x78,
- 0x12, 0x34, 0x56, 0x78,
+ 0x80, 0xe0, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x56, 0x78,
// encrypted payload
0x62, 0x69, 0x76, 0xca, 0xc5,
// HMAC
static const uint8_t rtcp_aes128_80[] = {
// RTCP header
- 0x81, 0xc9, 0x00, 0x07,
- 0x12, 0x34, 0x56, 0x78,
+ 0x81, 0xc9, 0x00, 0x07, 0x12, 0x34, 0x56, 0x78,
// encrypted payload
- 0x8a, 0xac, 0xdc, 0xa5,
- 0x4c, 0xf6, 0x78, 0xa6,
- 0x62, 0x8f, 0x24, 0xda,
- 0x6c, 0x09, 0x3f, 0xa9,
- 0x28, 0x7a, 0xb5, 0x7f,
- 0x1f, 0x0f, 0xc9, 0x35,
+ 0x8a, 0xac, 0xdc, 0xa5, 0x4c, 0xf6, 0x78, 0xa6, 0x62, 0x8f, 0x24, 0xda,
+ 0x6c, 0x09, 0x3f, 0xa9, 0x28, 0x7a, 0xb5, 0x7f, 0x1f, 0x0f, 0xc9, 0x35,
// RTCP index
0x80, 0x00, 0x00, 0x03,
// HMAC
static const uint8_t rtp_aes128_32[] = {
// RTP header
- 0x80, 0xe0, 0x12, 0x34,
- 0x12, 0x34, 0x56, 0x78,
- 0x12, 0x34, 0x56, 0x78,
+ 0x80, 0xe0, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x56, 0x78,
// encrypted payload
0x62, 0x69, 0x76, 0xca, 0xc5,
// HMAC
static const uint8_t rtcp_aes128_32[] = {
// RTCP header
- 0x81, 0xc9, 0x00, 0x07,
- 0x12, 0x34, 0x56, 0x78,
+ 0x81, 0xc9, 0x00, 0x07, 0x12, 0x34, 0x56, 0x78,
// encrypted payload
- 0x35, 0xe9, 0xb5, 0xff,
- 0x0d, 0xd1, 0xde, 0x70,
- 0x74, 0x10, 0xaa, 0x1b,
- 0xb2, 0x8d, 0xf0, 0x20,
- 0x02, 0x99, 0x6b, 0x1b,
- 0x0b, 0xd0, 0x47, 0x34,
+ 0x35, 0xe9, 0xb5, 0xff, 0x0d, 0xd1, 0xde, 0x70, 0x74, 0x10, 0xaa, 0x1b,
+ 0xb2, 0x8d, 0xf0, 0x20, 0x02, 0x99, 0x6b, 0x1b, 0x0b, 0xd0, 0x47, 0x34,
// RTCP index
0x80, 0x00, 0x00, 0x04,
// HMAC
0x5b, 0xd2, 0xa9, 0x9d,
};
+static const char *aes128_80_32_key = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmn";
+
+static const uint8_t rtp_aes128_80_32[] = {
+ // RTP header
+ 0x80, 0xe0, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x56, 0x78,
+ // encrypted payload
+ 0x62, 0x69, 0x76, 0xca, 0xc5,
+ // HMAC
+ 0xa1, 0xac, 0x1b, 0xb4,
+};
+
+static const uint8_t rtcp_aes128_80_32[] = {
+ // RTCP header
+ 0x81, 0xc9, 0x00, 0x07, 0x12, 0x34, 0x56, 0x78,
+ // encrypted payload
+ 0xd6, 0xae, 0xc1, 0x58, 0x63, 0x70, 0xc9, 0x88, 0x66, 0x26, 0x1c, 0x53,
+ 0xff, 0x5d, 0x5d, 0x2b, 0x0f, 0x8c, 0x72, 0x3e, 0xc9, 0x1d, 0x43, 0xf9,
+ // RTCP index
+ 0x80, 0x00, 0x00, 0x05,
+ // HMAC
+ 0x09, 0x16, 0xb4, 0x27, 0x9a, 0xe9, 0x92, 0x26, 0x4e, 0x10,
+};
+
static void print_data(const uint8_t *buf, int len)
{
int i;
{
struct SRTPContext enc = { 0 }, dec = { 0 };
int len;
- char buf[1500];
+ char buf[RTP_MAX_PACKET_LENGTH];
ff_srtp_set_crypto(&enc, suite, key);
ff_srtp_set_crypto(&dec, suite, key);
len = ff_srtp_encrypt(&enc, data, in_len, buf, sizeof(buf));
{
static const char *aes128_80_suite = "AES_CM_128_HMAC_SHA1_80";
static const char *aes128_32_suite = "AES_CM_128_HMAC_SHA1_32";
+ static const char *aes128_80_32_suite = "SRTP_AES128_CM_HMAC_SHA1_32";
static const char *test_key = "abcdefghijklmnopqrstuvwxyz1234567890ABCD";
- uint8_t buf[1500];
+ uint8_t buf[RTP_MAX_PACKET_LENGTH];
struct SRTPContext srtp = { 0 };
int len;
ff_srtp_set_crypto(&srtp, aes128_80_suite, aes128_80_key);
len = test_decrypt(&srtp, rtp_aes128_80, sizeof(rtp_aes128_80), buf);
test_encrypt(buf, len, aes128_80_suite, test_key);
test_encrypt(buf, len, aes128_32_suite, test_key);
+ test_encrypt(buf, len, aes128_80_32_suite, test_key);
test_decrypt(&srtp, rtcp_aes128_80, sizeof(rtcp_aes128_80), buf);
test_encrypt(buf, len, aes128_80_suite, test_key);
test_encrypt(buf, len, aes128_32_suite, test_key);
+ test_encrypt(buf, len, aes128_80_32_suite, test_key);
ff_srtp_free(&srtp);
memset(&srtp, 0, sizeof(srtp)); // Clear the context
test_decrypt(&srtp, rtp_aes128_32, sizeof(rtp_aes128_32), buf);
test_decrypt(&srtp, rtcp_aes128_32, sizeof(rtcp_aes128_32), buf);
ff_srtp_free(&srtp);
+
+ memset(&srtp, 0, sizeof(srtp)); // Clear the context
+ ff_srtp_set_crypto(&srtp, aes128_80_32_suite, aes128_80_32_key);
+ test_decrypt(&srtp, rtp_aes128_80_32, sizeof(rtp_aes128_80_32), buf);
+ test_decrypt(&srtp, rtcp_aes128_80_32, sizeof(rtcp_aes128_80_32), buf);
+ ff_srtp_free(&srtp);
return 0;
}
#endif /* TEST */