Replying to Avatar Pablo Xannybar

In case anyone is in doubt: it's possible quantum computing could break common cryptographic cyphers in the future, but it's still entirely hypothetical.

Anyone telling you there's an immanent threat to Bitcoin because of this theoretical vaporware is either uninformed or deliberately spreading FUD.
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twentyone 2y ago

And they also likely have never heard of or are failing to mention the phrase “difficulty adjustment”

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Pablo Xannybar 2y ago

To be fair, in this hypothetical, if SHA-256 had indeed been broken, the difficulty wouldn't matter because the underlying cryptography keeping Bitcoin secure would itself be vulnerable.

However this won't happen out of nowhere from quantum computers. When a hash function is close to breaking there will be research leading up to the final crack.

There will be plenty of time to transition to a more secure alternative. Satoshi himself discussed this.

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twentyone 2y ago

I have faith in bitcoin devs to address this threat should it ever materialize. And as time goes by with hyperbitcoinization unfolding, the number of bitcoin devs will only increase and the amount of support to protect bitcoin will only increases. The greater the adoption the greater number of people with incentives to protect bitcoin.

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Pablo Xannybar 2y ago

Yup they're certainly more than able.

I just hope it doesn't become another drama. Hopefully not because the need for keeping the Bitcoin network secure is of course paramount.

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twentyone 2y ago

Agreed

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gsovereignty 2y ago

Lamport signatures fix this.

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Big Barry Bitcoin 2y ago

Sha256 hashing is not vulnerable to quantum computing. Not even theoretically.