2 ms·
> 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
by mtgx 10y ago
> 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-authenticated https://core.telegram.org/techfaq#q-how-are-voice-calls-auth...
- jessaustin 10y agoThat would be low if we were considering a long-term key. It seems fine for a one-shot authentication token? Eve is going to have to MitM a lot of calls before she guesses this token correctly.