encryption

All posts tagged encryption

Way back in 47 (version that is), Chrome started to mandate the use of HTTPS in conjunction with getUserMedia. To use HTTPS you need a SSL/TLS certificate.  Xander Dumaine covered this a bit for us before, but I still see a lot of people out there struggle with it. As it so happens, the certificate for my own personal website is about to expire and I’m not too excited about paying $70/year to renew it. Fortunately, there is a new way to get certificates for free through Let’s Encrypt. Let’s Encrypt is a non-profit certificate authority that formed with the backing of many major industry players like Mozilla, Akamai, Cisco, and many others to simplify and automate the process of setting up encryption for your website. Oh, and its completely free.

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DTLS-SRTP vs SDES

As I anticipated in my post on WebRTC standardization, the IETF 87th meeting took place last week in Berlin, Germany. One of the agenda items for WebRTC was whether SDES should be part (and how) of WebRTC.

According to the IETF drafts, any WebRTC compliant implementation must support the RTP/SAVPF profile which builds on top of the Secure RTP profile RTP/SAVP. This means that media channels (e.g. audio, video) must be secured via Secure RTP (SRTP), which provides media encryption among other security features. In fact, the use of plain (unencrypted) RTP is explicitly forbidden by the WebRTC specifications.

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