Comment by karel-3d
4 days ago
From my cursory reading, it doesn't seem related to Bitcoin at all, but it might affect some more complex Ethereum protocols. Doesn't seem related to Ethereum itself, but it seems related to some zero-knowledge proofs.
edit: it seems to be related to something called "GKR protocol" that some cryptocurrencies use (?) - can use (?) - for somehow proving ... something? mining?.. using zero-knowledge proofs.... like here - https://www.polyhedra.network/expander (as usual in cryptocurrency, hard to tell what is actually being done/sold)
what I take from this, as a laic, is that... experimental ZK-proofs are indeed experimental.
Schnorr signatures, which Bitcoin uses, are based on the Fiat-Shamir transform, but I don't know enough about this attack to be able to tell whether there's any problem with that particular instance of it.
So the way Ethereum comes in is that the community at large is moving user activity to "L2s" - separate blockchains (sidechains) usually rolled up in and therefore secured by Ethereum Mainnet. Some of the newer L2s where apparently using this. So it affects Ethereum to the extent that its users could be bridging witg unsane protocols and implementations.
There are usually "bridge contracts" deployed on Mainnet to allow briding assets/tokens between them. This (besides obv exchanges) is where most of the ridiculous hacks and online theft of past few years have happened. The Axie/Ronin hack was a huge facepalm and should have been a lesson to be more wary of handwavy security claims of these more experimental networks.