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A comment on Ask HN: How do we know Signal or Telegram don't store our data on their servers?. Parent comment

Re:Ask HN: How do we know Signal or Telegram don't store our... by sneak on Wednesday January 13, 2021 @02:40PM (#25766976)
Yes, but it doesn't support doing that whilst in a video call with them.
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Re:Ask HN: How do we know Signal or Telegram don't store our... by henearkr on Wednesday January 13, 2021 @02:41PM (#25766996)
[edited]

Indeed it is far from straightforward that merely doing a video call suffices to check the keys.

Signal is famously using a special protocol for secure key sharing through the server, which I have not studied.

But as said by another comment, there is no way around verifying explicitly the public key using an independent channel.

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