The Royal Institution
What does the padlock icon on your internet browser mean and why is encryption important? In this clip from 2008 CHRISTMAS LECTURES “Hi-tech trek”, Chris Bishop uses coloured water to demonstrate how information is transferred on the internet.
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This video is from our 2017 advent calendar. Watch the full series here: https://www.youtube.com/playlist?list=PLbnrZHfNEDZyvS5Cx-aRTX-Y8IBJCNmYm
Or watch the full lecture here: http://www.rigb.org/christmas-lectures/watch/2008/hi-tech-trek/untangling-the-web?utm_source=youtube&utm_medium=social&utm_campaign=2017_advent&utm_content=description
The Royal Institution 2017 advent calendar ‘Transmissions Through Time’ looks through the lens of CHRISTMAS LECTURES past to share the best demonstrations around the science of communication. From Attenborough and Sagan to Woollard and Fong, we revisit old favourites and find new gems to bring you a little gift of science every day in the lead up to Christmas. http://bit.ly/RiAdvent17
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Wouldn't it be easier to just put up a fake green padlock?
He knows how too make science interesting
Kevin spacey is hiding out at the RI while the dust settles
This is probably the best way I've seen this explained to non-computer people!
Otherwise known as: Diffie-Hellman key exchange
How is that even possible??
Wait, I think I get most of it.
But Blue is the public key, right?
While separating molecules sure is hard, simply computing BlueYellow divided by Blue to get person A's private key should be a cake walk right?
Sure, they are enormous numbers, but a simple division should be impossible for someone who really wants that key?
Is there any scrambling done to BY?
But why would you need so send bowls of colored water over the internet?!
The important thing they don't say is
DONT IGNORE WARNINGS ABOUT INVALID CERTIFICATES on a site !!
I would love to see the full lecture
I'm a developer, and have worked with encryption plenty, and that's a pretty impressively intuitive way of showing how handshaking to establish a key can work.
He didn't say how it is unscrambled at the other end.
A bit racist to force a poc to dress up like a criminal.
best way of explaining encryption I've seen.
Brings back memories of the first Christmas lecture I saw.
I think you should still be careful about entering credit card info even when you see green or yellow padlock in the browser. It means the connection is secured, but it does not say the other side is trustworthy, they are just who they say they are (that is the domain name is theirs).
NOT SO FAST, MATE!! That padlock just says that the transport way between your computer and the site is TLS encrypted and that its TLS Certificae is still trusted by your webbrowser. IT DOES NOT MEAN, THAT THE WEB-SERVER IS SAFE BY ANY MEANS!! The transport might be safe, but the sever might be hacked and your credit card credentials are fished or leaked. So please dont mix up this stuff. Padlock >> safe connection! NOT safe Server !!
I just like that the girls mask is almost exactly the same width as the stripes on her shirt. It's very stylish.
Yeah, it will be scrambled, unless your computer has an Intel remote management processor. Then it can glean info straight from the keyboard or even the display feed, before its ever encrypted. Isn't that just lovely?
you can stop there that's fine
but the internet thief don't have to give this "secret" color to the next person, could mix an own color (man in the middle attack).
This is the simplest explanation I ever found:
Alice wants to send a locked box to Bob.
Alice has a lock, so does Bob.
Alice attaches her lock, so no-one but she can open the box, and sends it to Bob.
Bob can't open the box, so he attaches his lock. He sends the doubly locked box back to Alice.
Alice opens her lock with her key and sends back the box.
Bob can now open the box with his own key.
Yellow padlock??
Unfortunately, 'Man-in-the-middle' breaks this scheme and more measures are required.
But my credit card is blue and white with a splash of red. Now, what colour does my cedit card end up being ? Is it red because i am in debt ?
How lucky they where for the example, there was someone in the audience with a thief outfit!
is this top secret?