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The AirDrop flaw exploited by China, explained

blog.cryptographyengineering.com Attack of the week: Airdrop tracing

It’s been a while since I wrote an “attack of the week” post, and the fault for this is entirely mine. I’ve been much too busy writing boring posts about Schnorr signatures!…

Attack of the week: Airdrop tracing

The news was already posted here last week, but I found this great technical explanation of the flaw. Long story short: Apple is using bad cryptography. They got alerted by researchers back in 2019 but didn't fix it.

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