RattlerSix

joined 1 year ago
[–] [email protected] 3 points 1 month ago

Came here to day something like this but, as usual, I

[–] [email protected] 2 points 1 month ago

But different doesn't mean random. An attacker could test every possibility for that pixel rather quickly. Even faster if you know a bunch of the pixels are, for example, a shade of gray.

I found an explanation where they bring up the issues I brought up as well as some others.

https://blog.cloudflare.com/lavarand-in-production-the-nitty-gritty-technical-details/

They give an example with one red value for a single pixel. They don't address my point that there are a lot of pixels like that one, maybe not all would be 50/50 like their example but a lot of pixels would have a much narrower range of values than randomness.

But they answer my second point about a hacker putting something in front of the camera with known values and that answer sort of takes care of everything. It boils down to, it doesn't matter because the lava lamp wall output is mixed with other sources that an attacker doesn't have access to.

[–] [email protected] 8 points 1 month ago* (last edited 1 month ago) (2 children)

I'm sure they're smarter than me but my novice cryptographer brain doesn't understand this.

Isn't the string of numbers representing each pixel rather limited Aren't all those sections of the image that have lava lamps limited to values somewhere in the reddish/blueish spectrum? Isn't the gray background very non-random?

Apparently the camera is accessible in the lobby. They say people walking in front of the camera adds randomness. If I go there and hold a photo in front of the camera which I know the values of, doesn't that compromise everything?

To be fair their site says they take the lava lamp output and combine it with entropy from two servers and probably do a lot of other stuff before actually getting random numbers. But I don't get how the lava lamps photo setup is even close to being random

tried and failed to add image, so here a link: https://www.cloudflare.com/learning/ssl/lava-lamp-encryption/

[–] [email protected] 2 points 1 month ago

Ah darn. Well I'm sure you find some locally. Good luck!

[–] [email protected] 2 points 1 month ago (2 children)

PM me if you're in the US I'll send some

[–] [email protected] 2 points 1 month ago

I have this one, it's probably the most minimal https://a.co/d/1BycXW3

[–] [email protected] 4 points 1 month ago

I love wireless charging. I don't know how it would be a gimmick, except that it's slower than using a cord (but I think the next generation is supposed to be really fast). They make DIY wireless chargers that you can wire up and put in things. I have two that I mounted under the little tray on top of my dash. I put my wireless charging earbuds case in the tray and it automatically charges while I'm driving. I have a flashlight that can charge there too. The tray is too small for a phone or else a phone could charge there. I've been thinking about putting one inside my nightstand at home https://a.co/d/gdghAWp

I also like magnetic phone holders with wireless charging. I made mine out of a different type of mount and charger but it's something like the link. I have one mounted to my dash where I can see the phone if I need nav or something, it holds it firmly and charges as I'm driving. Also mounted one on my desk next to the computer. https://a.co/d/7pauuzO

[–] [email protected] 9 points 3 months ago

I've seen that video a hundred times and it never fails to disappoint

[–] [email protected] 20 points 3 months ago (1 children)

I was on a highway doing around 60 when the car in front of me suddenly spun around in a 360 and stopped. Luckily they were some distance in front and there was no other traffic. When I passed, it was a teenage boy in the passenger and his grandmother driving. She was yelling at him and reaching down between them trying to do something. I think he had pulled the e-brake just to see what would happen.

[–] [email protected] 2 points 4 months ago

And when you go to war they're obligated to go too, possibly even in your place

[–] [email protected] 19 points 4 months ago

Check your ballcock.

(It's a real part inside the toilet but probably isn't the issue, I just wanted to say ballcock)

[–] [email protected] 12 points 4 months ago

I love that movie. The way they run with blades is so good

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