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SRTCP

SRTCP is the secured variant of RTCP, providing encryption, authentication, and replay protection for RTCP control packets.

Purpose

It protects RTCP feedback packets to the same standard as SRTP, preventing control-information leaks and tampering.

Mechanism

The same encryption and authentication mechanisms as SRTP apply to RTCP packets, with an added SRTCP index for replay protection. Keys are shared with SRTP.

Use cases

  • WebRTC control-plane encryption
  • Secured RTCP feedback
  • VoIP security

Related tools

References