[Live-devel] Enabling RTSPS & SRTP in v4l2rtspserver with Live555 – Retrieving MIKEY Data from SDP

[Manikandan Valaguru]

Hi,
I am using a custom v4l2rtspserver that is built on Live555, and I am working on enabling RTSPS (RTSP over TLS) and SRTP (Secure RTP) for secure streaming. My goal is to stream video securely and play it back in GStreamer.
>From my understanding:

  *
RTSPS can be encrypted using the appropriate TLS certificate.
  *
SRTP requires a key for decryption, which can be obtained from the MIKEY data in the SDP (Session Description Protocol) of the RTSP response.
  *
Using this key, I need to construct a GStreamer pipeline to decrypt the SRTP packets.

Could you confirm if this understanding is correct?
Additionally, I am writing a C application to extract the MIKEY data from the SDP in the RTSP response sent by GStreamer. However, I am unable to retrieve this data.
Interestingly, VLC is able to stream and play the video correctly, but I am unsure how VLC handles SRTP key exchange. Any insights into how VLC manages this process would also be helpful.
Are there any examples or guidance on how to extract MIKEY data from the SDP using Live555? Any help or pointers would be greatly appreciated.

Thank you for your time.



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