If they did this, comparatively how far are they from cracking SHA-256?

https://x.com/wmhuo168/status/1845117383154729397

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"BREAKING: Chinese quantum computer just cracked multiple SPN algorithms. This is way bigger than cracking the ENIGMA code. The future of encryption is at stake" 🤯


Sha256 is fine, it’s the elliptic curve keys and cryptography I would be worried about.


I would want to hear what Bruce Schneier thinks of this development.

It’s not uncommon for previously robust cryptography to be broken in the course of time. We switched from MD5 to SHA256 for hashing and DSA to RSA for this reason in the past.

Security is a perpetual cat-and-mouse game.


Yes


Someone wrote we got have 10 years but maybe less…


I like the idea of Satoshi helping us from the past, like a wise wizard… https://i.nostr.build/2wZnkK4EuPFseDr7.jpg https://i.nostr.build/AGwh21DtzcqlGGsn.jpg


Quibits are hard to deal with in large quantities, too many noise issues. Unless there will be a breakthrough in a form of a new quantum computer design, I don’t think the current approach is scalable to a sufficiently high number of them. But heck, I have no idea about that field to even speculate 😂😂😂


I guess gold it is
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Hard fork with something like if you haven't moved your coins in 20 years they are now permanently burned.


Unfortunately it is hard to believe it is that close. Even the paper linked to the article is not available.


It better be far. But its rather closer than ever


With regards specifically to SHA256, I’m not worried. If it became too easy to solve Bitcoin block nonces, we can soft-fork in additional difficulty requirements.

Breaking SHA256 means anyone can be a 51% attacker without actually having the hash. So un-upgraded nodes would be vulnerable. But Bitcoin would survive.


Fair enough


did you read the article?


“Even if quantum computing posed a threat to the cryptographic layer, Bitcoin’s decentralized and global network of nodes would play a critical role in driving a transition to quantum-resistant algorithms—an advantage centralized systems simply do not have.”

What transition? We have nothing ready. If someone proved they could use quantum computing moving coins they never had a key to, like Satoshi’s coins, price of Bitcoin would fall 99.99% within a week. If we not gonna have a procedure ready, for quantum attack, Bitcoin will die following such attack. People wouldn’t trust it ever again.


I don't know about you. But if Bitcoin drops 99.99%. I would sell a kidney, a finger and couple of toes.


Right now, obviously. Not if Bitcoin security and therefore trust in it is broken.