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Cloud flare handles over 5 trillion web page requests every day most of which

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are encrypted to protect your data but did you know that this encryption

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depends on lava lamps I'm talking regular lava lamps

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like you can get on Amazon what does the

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lava have some kind of super secret processing capability that's soon to put

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AMD and Intel out of business obviously not but the lava is a great source of

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natural entropy which is a measure of disorder if you think back to high

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school physics the reason natural entropy is important is that it provides

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natural Randomness which can be used to encrypt data you see the lava inside a

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lava lamp which is actually just wax Flows In naturally random unpredictable

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patterns once the lamp is heated just like how you can't predict exactly how

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steam rises from a Boiling Pot for example a camera at Cloud Flare's

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headquarters is pointed at a wall of approximately 100 lava lamps and takes a

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photo ever so often to capture the exact pattern the lava lamps are showing those

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photos are then sent to a computer that gives each pixel a numerical value

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depending on its appearance creating a random numerical string that becomes

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what we call a cryptographic seed this seed number is fed into a mathematical

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function that creates another seed which then gets fed into a number generator

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whose outputs can be used for cryptographic Keys used to encrypt and

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decrypt traffic making it difficult for attackers to see what you're looking at

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these keys are also used to confirm that the communication actually came from the

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website you're connected to preventing your data from flowing to an attacker

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that's pretending to be a legitimate service but actually isn't a legitimate

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service but Laval lamps are actually not the only random objects used to create

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natural Randomness we'll tell you about some other hilarious setups that

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cloudflare specifically uses and why they're even necessary since can't we

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just use computers right after we thank ODU if your business needs a website ODU

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puts the do back in do it yourself and

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it's 100% free first use their simple code-free drag and drop elements to

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assemble your layouts then select from millions of copyright free pictures or

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upload your own to start customizing next easily fill out any blank boxes

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with text thanks to their AI powered copywriter and finally Spruce things up

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to your hearts content with the rest of their many customization options each

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site comes with unlimited hosting and even a free fre custom domain for an

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entire year so build your own free website with ODU using our Link in the

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description besides lava lamps some of cloud fl's offices use swinging

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pendulums or rainbow mobiles that get blown around by the air conditioning

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even if someone were to walk in front of these installations when the camera

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captures their photo that's actually completely fine as that just adds a

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different kind of Randomness to the image cloudflare even has an

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installation in Singapore where the natural decay of a chunk of uranium is

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the randomness source but why all this roll it turns out computers are much

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worse than Mother Nature at generating true Randomness while there are lots of

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easily accessible random number generators out there many of them are

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pseudo random rather than truly random but what's the difference well pseudo

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random number generators produce numbers by using an algorithm meaning that

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they're predictable if you know the seed as the same seed will produce the same

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output every time unless that seed is truly random there's no actual true

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Randomness in the process meaning that you could guess a cryptographic key if

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you know the seed and on many pseudo random number generators that may not be

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that hard to do if the seed is something fairly easy to guess like the date or

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the time as are commonly used and this might be fine if you're just trying to

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decide on a random number for something like a D20 rooll in your D and D game

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but for trying to keep internet traffic secure a truly random hard toog guess

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seed from a natural entropy source is essential but if you're in need of a

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random number generator in your own home for whatever reason we recommend lava

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lamps over radioactive materials in the long term they're less bad for you

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thanks for watching guys if you like this video check out our other video on a cloudflare mishap that took a good

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chunk of the internet offline those guys