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HelloZeroNet / ZeroNet

ZeroNet - Decentralized websites using Bitcoin crypto and BitTorrent network
https://zeronet.io
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Quantum Computer #185

Closed TheNain38 closed 7 years ago

TheNain38 commented 9 years ago

Quantum computer can break BitCoin cryptography http://pqcrypto.org/

HelloZeroNet commented 9 years ago

If this happens then every currently known computer network become unsafe.

Currently this is only "in theory" and not reality. The encryption will evolve when Bitcoin's current cryptography breaking computers become reality and we will follow change.

ghost commented 8 years ago

Yes, there will always be unsolvable mathematics equations on which the cryptography is based on.

ghost commented 8 years ago

There are post-quantum crypto implementations, but as far as I know they're somewhat experimental and not yet shipped by default within Openssl/Libressl. I'd estimate that a government with a large budget could possibly build a quantum cryptanalysis machine for prime factoring small key lengths within a decade.

HelloZeroNet commented 8 years ago

The current bitcoin address format can be considered as quantum proof:

"quantum computing is not very useful for breaking hashes like SHA-256. Just signature and encryption algorithms like ECDSA or RSA. To attack ECDSA, you need to know the public key. However, most addresses are made from the hash of the public key, which is not enough to start attacking ECDSA. You'd need to break the hash first, which won't be significantly easier with quantum computers. TL;DR any normal address that hasn't been spent from before is safe. So, if you use Bitcoin the way the developers recommend and don't reuse addresses, your coins are quantum safe, at least for now."

https://www.reddit.com/r/Bitcoin/comments/3wfmg2/satoshis_unmoved_coins_are_the_worlds_biggest/cxw6osp

ghost commented 7 years ago

I don't think it's a zeronet specific issue and I don't thing it's even a real issue yet. When Openssl will be declared unsecure anymore, It will be a good time to address the problem.
Closing ?