AES GCM encryption for mediasoup

mediasoup libraries
1

Is it possible to use AES GCM encryption mechanism for encrypt/decrypt mediastream?

2

Too short question. Let’s do this another way: which encryption mechanism is mediasoup using now?

3

HMAC_SHA1 I believe.

4

Based on what you think so?

5
6

As the doc says that is just for SRTP over plain or pipe transport. In WebRTC world, SRTP ciphers are negotiated using DTLS, so check DtlsTransport.cpp.

1 Like
7

Ok. @ibc
I didn’t understand anything from DtlsTransport.cpp because I don’t know c++ but I saw SrtpAesGcm256MasterKeyLength so I believe AES GCM can be used with this https://mediasoup.org/documentation/v3/mediasoup/api/#webRtcTransport-connect