How are these videos under 1k views? This is the best explanation I've seen in KZread about this topic

@mikestaub

Жыл бұрын

Agreed

@EmperorZelos

Жыл бұрын

because she left Infinity :(

@erickaguirre4888

Жыл бұрын

@@EmperorZelos that was years ago, and still it doesn't explain how come these videos have not blown up

So glad you are back on KZread! Your infinite series videos are in the very top tier of math education. There are very few people that can teach math as well as you can.

Happy you are back!!!!!😍🥰😍😍😍😍

This is probably the best explanation I've seen for any topic, ever.

this is hands down the best explanation I've come across. thank you sm

Wow such a surprise. Great to learn from you after long time.

BEST EXPLAINATION EVER, I SWEAR!

Really thankful for this explaination ❤️

this explanation was incredibly clear. Thank you

Great video! You're so pleasant to listen to, and concise

This was so helpful, thanks for taking the time to make this very understandable.

Best and Simple explanation

The best 👍

Thank you so much for this. I was having a hard time understanding how the double ratchet was tied to diffie hellman. The symmetric encryption and decryption with the shared key makes a lot of sense. May I ask, if you don't mind, how does the ephemeral key and multiple prekeys fit into this double ratchet? I suspect the ephemeral key is similar to a session key which is re-generated every time the user comes back online. But how about the prekeys? If the key derivation function is not updated, how are the prekeys used?

thx

This type of content restored my faith in the internet and KZread. Thank you very much could you recommend courses/ books for those who are interested in advanced cryptography subjects

8:43 I dont understand something. Alice lost her first priv/pub key pair after response. how can she decrypt previous messages?

How would the system re-sort messages received out of order? I dont get it. If Alice received Bobs message out of order, and say after Alice sent her own messages, then all the machinery would have changed and you couldnt decode the out of synch messages. The solution for this would be to retain memory of the prior keys.... but I imagine that would compromise security both backward and forward

What if bob user want's Old messages. And bob switch to another phone than how he can decrypt unread messages

@Seibertnr90

10 ай бұрын

He can‘t, like with Signal App. He also can‘t on whatsapp, but whatsapp requests the sender to resend messages wich were marked „unreceived“ (only one ✅) with the new keys.

How do you perform DH if your peer is offline?

@Seibertnr90

10 ай бұрын

Every participant puts some public keys in advance to the Server (Signal, Whatsapp). The sender retrieves one of those, mixes it with his private key and sends the encrypted message with his publics key to the receiver. The receiver starts to mix his private key with the public key from the sender and gets the shared secret to decrypt.

HELP

Well, if you gain access to Alice or Bob's private key, you see everything. Why is worry more focused on defending from the attacker getting access to one of the intermediate secret keys that encrypt the message rather than the base private key that Bob and Alice have that never changes? In other words why is it considered more likely that the key that encrypts the message will be compromised rather than the base key that each Bob and Alice have that never changes?

@danielf.7151

10 ай бұрын

because the secret key should never leave the device

0:10

Who you no make more vids?

Let me get this straight... we are just using Diffie Hellman on each message? This doesnt seem particularly special in and of itself. If youre doing diffie hellman each time anyway to change the double ratchet and preserve secrecy in both directions, why use the ratchet at all; why not just diffie hellman each time?

Wow, this channel is on par with @Computerphile. Subbed! 🎉