<story><title>Google Widevine Content Decryption Module DMCA</title><url>https://github.com/github/dmca/blob/master/2020/11/2020-11-09-Google.md</url></story><parent_chain><item><author>bawolff</author><text>Level 1 means everything is done in a secure enclave from what i understand.&lt;p&gt;I wonder if google does something similar to bluray AACS where if a level 1 device is compromised they can revoke just that device (or manufacturer&amp;#x27;s key). If not, i wonder why they don&amp;#x27;t.&lt;p&gt;(To clarify my curiosity is in an abstract way, i am ideologically opposed to DRM)</text></item><item><author>resynth1943</author><text>Only Level 3, sadly, which means it can decrypt Standard Definition (480p) videos. This has been out for a while.&lt;p&gt;Some reputable people in the pirating industry have actually cracked Level 1, which means they can decrypt 4K! :-)</text></item></parent_chain><comment><author>rndgermandude</author><text>Yes, they can revoke or downgrade the level. And sometimes devices share the same key&lt;p&gt;Recent instance of such a downgrade, causing a ton of (Philips) TVs to stop playing HD content apparently:
&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.reddit.com&amp;#x2F;r&amp;#x2F;netflix&amp;#x2F;comments&amp;#x2F;jq9wdb&amp;#x2F;netflix_capped_at_166mbps480p&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.reddit.com&amp;#x2F;r&amp;#x2F;netflix&amp;#x2F;comments&amp;#x2F;jq9wdb&amp;#x2F;netflix_cap...&lt;/a&gt;&lt;p&gt;This is the tracker from the screenshots by the way: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;t.me&amp;#x2F;s&amp;#x2F;wvcrl&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;t.me&amp;#x2F;s&amp;#x2F;wvcrl&lt;/a&gt;</text></comment>
<story><title>Google Widevine Content Decryption Module DMCA</title><url>https://github.com/github/dmca/blob/master/2020/11/2020-11-09-Google.md</url></story><parent_chain><item><author>bawolff</author><text>Level 1 means everything is done in a secure enclave from what i understand.&lt;p&gt;I wonder if google does something similar to bluray AACS where if a level 1 device is compromised they can revoke just that device (or manufacturer&amp;#x27;s key). If not, i wonder why they don&amp;#x27;t.&lt;p&gt;(To clarify my curiosity is in an abstract way, i am ideologically opposed to DRM)</text></item><item><author>resynth1943</author><text>Only Level 3, sadly, which means it can decrypt Standard Definition (480p) videos. This has been out for a while.&lt;p&gt;Some reputable people in the pirating industry have actually cracked Level 1, which means they can decrypt 4K! :-)</text></item></parent_chain><comment><author>gruez</author><text>&amp;gt;If not, i wonder why they don&amp;#x27;t.&lt;p&gt;mainly because it&amp;#x27;s hard to trace back which device key got leaked, especially if all you have to go on are whatever the ripped videos. if you had the tools it&amp;#x27;d be much easier, but that&amp;#x27;s probably kept under tight wraps by the piracy groups.</text></comment>