3 ms·
> It seems like the use case presented in the link (malicious presenter connecting a laptop that hacks the projector) would not need HDCP. Unfortunately people
by vanchor3 4y ago
> It seems like the use case presented in the link (malicious presenter connecting a laptop that hacks the projector) would not need HDCP.
Unfortunately people often look at the projector and want to do something else with it, such as play video from one of the numerous sites that enforce DRM now, and will quickly become annoyed if they can't.
It can go various different ways from here, but it usually ends up with firewall being removed one way or another because someone in the chain doesn't agree with or understand the importance of it.
- jasomill 4y agoIf you're not concerned about the risk of prosecution under the anti-circumvention provisions of the DMCA, you should be able to emulate HDCP 2.2 by connecting the computer to an HDCP 2.2-to-1.4 converter[1], connecting the converter to one of the myriad cheap HDCP 1.4 splitters or audio extractors that "accidentally" strips HDCP as a side effect, connecting the splitter to the firewall, and, finally, connecting the firewall to the monitor. [1] I've used both https://www.amazon.com/Monoprice-115242-Blackbird-HDCP-Converter/dp/B01CT7THLO/ref=sr_1_3?crid=1ZDK1HXNWPRG1&keywords=hdcp+2.2+converter&qid=1655871337&s=electronics&sprefix=hdcp+2.2+converter%2Celectronics%2C64&sr=1-3 https://www.amazon.com/Monoprice-115242-Blackbird-HDCP-Conve... and https://www.hdfury.com/product/vertex-4k60-444-600mhz/ https://www.hdfury.com/product/vertex-4k60-444-600mhz/ in similar scenarios, and both worked. Come to think of it, though, while I love my Vertex dearly, it's exactly the sort of highly programmable[2] device this firewall exists to protect against. [2] Over (out-of-band) USB, RS-232, and, using an optional external adapter, Bluetooth. AFAIK, it's at least not intentionally configurable or reprogrammable over HDMI.