A WebRTC JavaScript API is added to control the key pair algorithm (RSA, ECDSA) to use for the self-signed certificates generated when DTLS is used for peerconnections. Changes to API surface: RTCCertificate class added, RTCPeerConnection.generateCertificate static method added, RTCConfiguration.certificates (sequence<RTCCertificate>) member added. This feature was behind a flag starting in Chrome 48 and Opera 35. Earlier, this feature was erroneously marked as shipping in M52
Docs: https://developer.mozilla.org/en-US/docs/Web/API/RTCCertificate https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/generateCertificate