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Voice Calls: Secure, Crystal-Clear, AI-Powered

telegram.org

71–80 of 299 posts

Re: Voice Calls: Secure, Crystal-Clear, AI-Powered

#71

I'm using Telegram as my main messaging system but I hope they'll open source everything. That's the only way to fully audit the service. Telegram is not too bad but has too many grey areas at this moment.

Client and protocol are open source. What more do you need?

They have stopped publishing the source code for their clients.

Re: Voice Calls: Secure, Crystal-Clear, AI-Powered

#72

Can anyone familiar with the matter say how secure is the 4-emoji verification code?

> Thanks to this modification, it becomes possible to prevent eavesdropping (MitM attacks on DH) with a probability of more than 0.9999999999 by using just over 33 bits of entropy in the visualization. These bits are presented to the users in the form of four emoticons. We have selected a pool of 333 emoji that all look quite different from one another and can be easily described in simple words in any language.

33 bits of entropy seems quite low to me.

https://core.telegram.org/techfaq#q-how-are-voice-calls-auth...

Re: Voice Calls: Secure, Crystal-Clear, AI-Powered

#73
Does anyone have an opinion on the new "three-message modification of the standard DH key exchange" they introduced for calls?

From their API doc: https://core.telegram.org/api/end-to-end/voice-calls#key-ver...

> Party A will generate a shared key with B — or whoever pretends to be B — without having a second chance to change its exponent a depending on the value g_b received from the other side; and the impostor will not have a chance to adapt his value of b depending on g_a, because it has to commit to a value of g_b before learning g_a.

> The use of hash commitment in the DH exchange constrains the attacker to only one guess to generate the correct visualization in their attack, which means that using just over 33 bits of entropy represented by four emoji in the visualization is enough to make a successful attack highly improbable.

Re: Voice Calls: Secure, Crystal-Clear, AI-Powered

#74

Very good. Great even. But there is a problem. Whatsapp has already won the chat/calls app war. Watch it grow massivly in the next year, i promise. Mostly due to incompetence of MS and Google.

WhatsApp/Fbchat Or WeChat (they (Tennent) just bought 5% of Tesla)

Re: Voice Calls: Secure, Crystal-Clear, AI-Powered

#75
post #30
post #18

But seriously how do they pay their bills? (I know VK brothers are super rich) There are bots that relay huge media files It's probably (imo) the fastest & most complete cloud based chat app Everything.. Literally everything you share can be retrived over the cloud & and now calling That must be super expensive infrastructure? No investors no monetization

Telegram is losing millions each year, paid by Pavel Durov, its founder. "If you look at Telegram today, every month it burns over $1 million. It might seem that it’s just going nowhere, but if you want to come up with business model, you need to get to a decent size first. We have 62 million users at the moment, which is enough userbase to attract third-party developers to create products on top of your platform. Yo…

Isn't this just hoping that products come along that use your platform and that people are willing to pay for that? Doesn't seem a good strategy to my limited understanding.

Also, experience has taught that users are fickle and that products that are free that transition to paid products quickly lose their users.

Re: Voice Calls: Secure, Crystal-Clear, AI-Powered

#76
post #37

This is your periodic reminder that Telegram uses sketchy crypto and should be avoided.

Most people who I know use Telegram(me included) use it because it's frankly the nicest(fast, looks good) Messenger out there, not because of its security features. Personally I don't use the secret chat functionality; I would use Signal if I wanted to communicate securely.

Re: Voice Calls: Secure, Crystal-Clear, AI-Powered

#77
post #53

Signal has this as well. I trust their security (personal bias), but unfortunately the call quality is a non-starter at the moment.

They've rolled out a new version of video/voice calls this month[1] which supposedly improved the quality quite a bit. I haven't personally tried it yet, though. [1]: https://whispersystems.org/blog/signal-video-calls/

I was recently surprised by a Signal call and the quality was surprisingly good compared to my previous experiences. I would give it another try.

Re: Voice Calls: Secure, Crystal-Clear, AI-Powered

#78
post #54

In a world full of bloated Electron HTML5 / JS "desktop apps", I'm very happy to see Telegram on Windows is a native app (Qt). It feels so incredibly responsive compared to everything else.

The funny thing is that Qt apps used to be derided for bloat (15MB of DLLs! 15MB!) but the rise of Electron has made Qt seem featherweight by comparison.

Re: Voice Calls: Secure, Crystal-Clear, AI-Powered

#79
post #54

In a world full of bloated Electron HTML5 / JS "desktop apps", I'm very happy to see Telegram on Windows is a native app (Qt). It feels so incredibly responsive compared to everything else.

They have a beautiful native macOS app as well. Also, excellent support for groups, including group URLs you can stick on a github page. Great program all around.
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