cisco/libsrtp

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

1397 stars · 520 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

libSRTP is Cisco's open-source C library implementing the Secure Real-time Transport Protocol (SRTP, RFC 3711) along with a supporting cryptographic kernel. It provides confidentiality and authentication for RTP media streams used in real-time audio and video communication.

Use cases

• encrypt and authenticate RTP media streams for VoIP calls
• add SRTP support to a WebRTC implementation
• secure real-time audio/video transport in a custom media server
• implement RFC 3711 SRTP in C applications
• protect SIP telephony media traffic
• build a video conferencing system with encrypted media

When to choose

• you need a mature, standards-compliant SRTP implementation in C
• you are building VoIP, WebRTC, or video conferencing software
• you need a lightweight library with broad platform support and multiple build systems

When to avoid

• you need DTLS or full signaling-layer security rather than media encryption
• you work in a higher-level language and prefer a binding-free managed solution
• you require all optional SRTP features, since only mandatory features are supported

Facets

library · maturity stable

security cryptography networking networking security developer-tools cross-platform c srtp rtp voip webrtc audio-video encryption real-time

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markdown · JSON · MCP: product_card(name="cisco/libsrtp")