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WhatsApp Key Transparency with Jasleen Malvai and Kevin Lewi
Security Cryptography Whatever
How to Fix a Key Change in WhatsApp
If you add up all the users, so for this five minute period, add up all people who updated their keys for WhatsApp that number will be leads by the audit proofs. This leaks potentially the number of key changes of like your sibling mode. So now if Didra blocked me and didn't want me to know what the key changes didra was making anymore, I could still say, oh, I didn't know where Didra's he was getting logged. And I, for example, share a certain sub tree with Didra. Then I knows basically if parts of the sub tree changed, I can known that it was possibly you that changed your key.
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