151–160 of 299 posts
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Sounds like marketing speech for variable bitrate encoding and/or adjusting compression aggressiveness.
> variable bitrate encoding I hope not... VBR can easily leak all sorts of information (including the actual content of the conversation)
I will definitely try this because I have trouble with all other voice chat services including Skype, WhatsApp and Hangouts. Often one of those three will work but not always. But the most annoying problem with any internet voice chat is not so much the quality but the latency. Landline phones have noticeably lower voice quality but one can still enjoy a conversation perfectly well. High latency, on the other hand, a…
>I always see these services talking about "crystal clear quality", but never latency, which is a shame. Maybe there is simply nothing they can do about it. I've noticed latency get worse and worse on the Internet since I started using it in the 90s and nobody seems to talk about it. Well, the first problem at home is likely your wireless. Live in an apartment and you can pick up 30 other routers in your wifi search.…
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It looks like in [1] that each device registered to a user has a device_key and when an encrypted message is sent, they user's public devices keys are requested and the message is encrypted for each device. New devices can't see old messages. [1] https://matrix.org/docs/guides/e2e_implementation.html
The message isn't encrypted for each device; the message is encrypted once for the room, as part of a 'session' of messages - and then the key data for that session is shared with the devices who are allowed to read it. Thus you can share old session key data with other devices if you want, meaning that new devices /can/ see old messages, although we're still working through the UX for that. (Currently the only way t…
Bad thing: this tech is trapped in Telegram which is quite political of an app. I wish they'd break it out into something like duo.
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> I've noticed latency get worse and worse on the Internet since I started using it in the 90s and nobody seems to talk about it. You're remembering incorrectly then. Dialup latency was in the range of hundreds of ms. Early high speed internet access also had higher latency than modern connections. If you have latency problems it's likely a problem with your hardware.
I don't remember dialup latency. I only remember it having low bandwidth. I'm talking about ADSL latency in the 90s.
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 wil…
That just sounds like ZRTP to me, from the short description in your comment.
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> variable bitrate encoding I hope not... VBR can easily leak all sorts of information (including the actual content of the conversation)
Correct, last article I recall reading about deciphering VBR from packet size alone was something in the neighborhood of 50% success rate.
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Signal and WhatsApp both support multi-device encrypted chats. Signal is better than WhatsApp in this respect as your primary device doesn't need to be online for it to work.
Signal multi-device support is very limited. Doesn't support multiple mobile devices. Primary device must be a phone, all others must be desktop computers with Chrome.
Are there any plans to bring group chat to Telegram?