Telegram's encryption algorithm is also homebrewed.
https://gizmodo.com/why-you-should-stop-using-telegram-right...
Re:I don't trust Signal
by tabletopneedle on Thursday August 09, 2018 @06:16PM
(#17729041)
It's also the case you can't use Telegram's end-to-end encryption on desktop clients at all.
That's all you need to understand to know that it's an inferior product in comparison to Signal.