Five years ago this week… CES 2017 saw Nagra debut a serious change in strategy, offering its own hardware root of trust in TVKey on both Samsung TVs and any TV built around Mstar chips. This marked Nagra trying to retrospectively compete with Rambus’ CryptoMedia independent security core, which had taken early advantage of the growing trend of every device needing a hardware root of trust since the arrival of 4K. In reality, not that much had changed at the time. Nagra had its own root of trust on similar chips for years, but it was then open for others to use, in particular the Widevine, Playready and Fairplay key servers. — The NextGenTV Consortium claims that ATSC…