Topic: Hackers/Public will have Access to Quantum Computers in 5-10 years? - page 2. (Read 498 times)

"The public" are most likely to be the last people to ever get hold of this sort of technology. The very richest private investors and institutions, if not governments, are the ones driving this technology to the very edge of it's capabilities right now. Ironically that sort of computing power should be able to create defenses against hackers so unless they somehow get access to a separate control interface then it is unlikely they'll be able to do much nefarious with it either. Eventually computing power will be able to overwhelm the defenses of current technology, but you have to wonder whether Bitcoin or other financial services will be able to adapt to an emerging threat more quickly - if it is even possible to defend against, as 2-factor authentication and limiting access attempts might be required.

The last bitcoins wont be mined till 2140. Satoshi is a mathematician more than a computer scientist and when he did the bitcoin whitepaper he probably didn't know or heard of what quantum computers are at the time.

I can assure you Quantum Computers will be mainstream way before that.

Cryptography is Encryption hence the word 'Cryptography'. Even the whatsapp app claims to be cryptography as it encrypts message between sender and receiver. Cryptography means hiding the message between sender & receiver. The only way to hide it now is Encryption so hackers cant see your messages.

The only prevention safe measure that i can see of bitcoin in the the future is the Bitcoin 'Quant' Hard Fork or Layer 2 Solution. Renaming Bitcoin to Bitqoin with a q yeah I know sounds crazy.

Hackers might just attack bitcoin with quantum computers not for money but for fun.

Just imagine a teenage hacker having a quantum computer in his bedroom right now. Hes the only hacker with a quantum computer in the world. He can turn the world upside down and cause so much chaos worldwide as 90% of the world is run on computers now so yeah its not just bitcoin quantum hackers will go after.

Quantum computers are one of the biggest enemies of the  blockchain, but I think by then newer and more powerful APIs will be built for the blockchain, and blockchain knowledge will increase to counter them.

Yes. People will start panicking, but again depends on whether they're willing to spend a few millions or even billions to recover a few million bucks worth of it.
Look, there is nothing to decrypt in Bitcoin. Nothing on Bitcoin is encrypted, or at least by design. It is possible to store encrypted strings on it but that is not the question here. Quantum computers will eventually crack ECDSA or asymmetric cryptography, which basically means all the cryptography that we're using for security online. Which also means thousands of terabytes of sensitive data that the governments would love to get... Don't you think it is far more worth it to get those than to get a couple of Bitcoins?

Point is, quantum computers will be very expensive to use and potentially fairly unstable at the earlier stages. We're still decades away. But by then, we would've introduced alternative schemes and adopt them to largely mitigate the threat of it, at least. Pre-emptive measures are always possible.

On the contrary, around 2030, Hackers or Governments using Quantum Computers will not harm Bitcoin but do good that is recover all the lost millions of Bitcoins in dead dormant btc addresses that have been gathering dust never recovered. If that could happen then that would be a good thing right as it will satisfy the btc demand at that time. But then again if this happens then it will stop demand and crash the btc price right 

Bitcoin is Bit Binary 1's and 0's digital based on the traditional Moores's Law harwdware that is nearly maxing out now so eventually the world will change over to Quantum Computing that is not digital. From the start of this Quantum tech new area we will see the most advancement in human history so much that all the latest digital tech we see today will be laughable by future generations in lets say 50 years time. Travelling at the speed of light or even time travel is possible under Quantum technology & its advancement 

I bet alien civilisations in the universe are already using Quantum computers systems. I wonder how Will Smith & Jeff Goldblum manage to upload a old fashioned binary digital virus onto the quantum alien computer systems on the alien mothership in the film independence day 

Okay jokes aside Quantum Mechanics, Quantum Physics and Quantum Computing is just weird stuff. Quantum physics goes against everything you learnt in normal physics.

Quantum Computers will be used to figure out what's going in black holes in the universe that scientists to this day still cant figure out with binary supercomputers they have today so the best answer they come up with now is several theories that can be any one of them

Quantum era will eliminate all the scientific theories we have been taught in school and establish more scientific facts.

All that said above you guys sure Quantum Computers cant decrypt Bitcoin  ?

No, they wouldn't. The quantum computers currently being researched around the world are not even close to powerful enough to even consider attacking a bitcoin key pair. It will be decades yet before they pose any real threat.

Why would they? What would be their incentive to attack bitcoin and crypto in general? Cause millions of tech savvy users and thousands of major corporations around the world to lose a lot of money? Hardly a good business plan for a tech company.

We have researched and found out that this topic had been long ago discussed many times as a matter of concern, but we came to know that quantum computers are not going to be a threat to bitcoin network or any of its private keys.

Please watch https://bitcointalksearch.org/topic/quantum-computing-threat-to-btc-correct-me-if-im-wrong-5195169

And if quantum computers were made to harm crypto, they would have done that already as IBM have their quantum computers, Google have them too. The major issue is, are these institutions going to touch these wallets to destroy crypto in general? Or are they not interested in touching crypto at all and will go on with what purpose these quantum computers are made for? That's the bigger question.

Woops, wrong choice of words. I meant those either with their public key revealed or P2PK and with the owners having no means of retrieving them.
Yep, correct. We've had quite a discussion in that other thread as well.

Regardless, it would be quite hard to tell if there would be disagreements about solving the issue in the future as well, would probably have a myraid of schemes to choose from. Agreeing to solve the issue is a no brainer, how to solve it is also another potential problem.

Why? Addresses which have not revealed their public key are quite safe, no?

This is by far the more contentious issue and the one which will require much more discussion than forking to a quantum resistant algorithm. If sufficiently powerful quantum computers come along, then there will be consensus regarding forking to a quantum resistant algorithm, otherwise it will be the end of bitcoin. What there won't be consensus on is what to do about all the coins in reused addresses and old P2PK addresses which are susceptible to being stolen, including ~1 million bitcoin which are theorized to belong to Satoshi. I am very much in the "Well, let them be stolen camp", but I know that we disagree on this issue.

People need to understand that quantum annealing isn't applicable to breaking ECDSA because it can't be used with Shor's algorithm. Quantum computers at its current stage are still underpowered such that it makes no difference to the security in the near future. You can't do much if you can't get a sufficiently powerful QC, which should be about 1200 qubits or thereabout for ECDSA.

There is no way in hell governments will let quantum computers out in public. You can break encryption and all the metadata collected by your agencies can then be cracked, why would they sell it to the general public?

Your existing addresses are all vulnerable, so is millions of Bitcoin left untouch in their original addresses. I'd cast some doubt on trying to reach consensus on sensitive issues like these. It is a far, far more complex issue than just forking Bitcoin.

It is how the cryptocurrency can adapt to risk and Bitcoin is the strongest cryptocurrency. Bitcoin is created by satoshi and its total supply will be mined in more than 100 years. Many things will happen in one century and not only Quantum computers but Superb Quantum computers or anything very stronger than Quantum computers can be produced. However, with the fork adaptation, Bitcoin will adapt to risky computers and it will not be broken by new generations of computer.

Nobody can prevent forking process from Bitcoin. After the community vote and reach consensus, fork will be done.

OMG, the quantum computer threat again, we have ben over this on the forum on
numerous occasions. Read what @o_e_l_e_o is posting.

I can hear the level of concern some people have and I can sense it turning to panic
all for nothing.

Quantum Computers will be better utilised to contribute to the Bitcoin network and or
put into service by mining Bitcoin.

Also the Bitcoin development team dont sit around drinking coffee and playing games
they work on an unhackable decentralised cryptographic currency technology, and
will continue to do so.

It's utterly false information and pure speculation. If you had any idea of quantum computing technology, you would not make such nonsense statements.


Once again, you are completely wrong. That is not how quantum computers work.

Nope, I don't think so. We are at a stage in quantum computing where it's still experimental and the size of one quantum computer is the same size as old computers back then which is worth a room. And I don't think that we will see it become a commercial product until they've figured out how to compact it like a PC and resolve the overheating issue due to the movement of particles.

Nontechnical people are reacting like that quantum computer has the superpower to go to people's houses, and will steal their cold storage/physical wallets.
They are so concerned about 256 bits Bitcoin private keys as if 4 digit atm PIN and bank card PIN are irresistible. The algorithm system used in Bitcoin, "ECDSA" is also used to secure the Fb, Twitter, Email, and other messaging apps. No one is talking about that but everyone is so much concerned about Bitcoin.
Another thing is, SHA-256 algorithm is theorized to be quantum-resistant, where Bitcoin is using SHA-512 further secured than SHA-256.

Oh boy it's one more of those quantum computers doomsday thread...  

Who told you that? TV or CNN?
If that is true, all those lost coins private keys would be cracked and sold by now, and that didn't happen.
Quantum computers will be limited doing only one function and by the time they become mainstream, everything will be cracked not just Bitcoin, that means all bank and military security.

Same way like all other encryption related tech we use today.
I guess it will be one more ''death'' of Bitcoins for mainstream media...

No, but there are already some shitcoins that are ''quantum resistant''.

First, this issue has been discussed several time on this forum and what I see is that people hype this Quantum computer than its capacity. However, it will take about a thousand or hundred years before Quantum computers that stand a chance to get wallet private keys will be develop, and even if it develops it's still not a threat to Bitcoin and it can't also break the SHA512 which Bitcoin use but it can only derive wallet private keys through an exposed public key.

If a Quantum computer could do that without the owner's knowledge, then it's pretty clear that the former would be blamed for inventing the production themselves, since at least they've included scripts hoping for data storage. It would be very dangerous, for its users. So far we haven't come across any complaints that went viral enough when shoppers lost some of their data after using a Quantum computer.

No, they won't be.

A quantum computer doesn't just perform the same calculations faster than a regular computer. Rather, depending on the problem it is solving, it can use different processes or algorithms altogether. Instead of it taking an exponential number of operations to reverse a public key to a private key (2^x, where x is the number of bits), it only takes in the order of x³. Moving from 128 bits to 129 bits for regular computer adds another 3.4*10³⁸ operations, but for a quantum computer, only adds another 49,547 operations, which is trivial. It's not simply a case of adding more bits - it requires a fork to a different algorithm altogether.

It is likely that at some point in the future, quantum computers will become more energy efficient and cheaper than ASICs when it comes to mining. This will not be a sudden event, but rather a gradual process, just as the move from GPUs to ASICs was not a sudden event. Just as the owner of the first ASICs couldn't suddenly mount a 51% attack, neither will the owner of the first quantum computers designed for mining.

I don't know if an industrial or a space mission scale of a quantum computer is going to be commercially available for that span of time, yes it's possible that it will be available but I don't think it will be the end for crypto because I am sure that most commercially available is probably going to overheat really fast. Plus, quantum computers are so sensitive and they're the size of a room so it's still impossible to see it really commercially available, maybe a rich person can afford one.