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Upbit hack's Occam's razorbfswa.substack.com/p/upbit-hacks-occams-razor
186 sats \ 1 comment \ @k00b 6 Dec tech
Dang nonce reuse. I wonder how much this could be avoided if we named it something like DO-NOT-REUSE-EVEN-PARTIALLY.
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100 sats \ 0 replies \ @Scoresby 6 Dec
ECDSA can be tweaked to work without randomness. No randomness, no bad randomness.
I didn't know this.
I have wondered in the past, if you need a nonce for every time you sign a transaction, why is it okay to trust your device to generate the randomness when it is not safe to trust your device to generate the randomness for your key?
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