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Author Topic: Entanglement for Quantum Computing chips achieved, will Bitcoin keep up?  (Read 67 times)
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January 07, 2020, 04:04:14 PM
 #1

Quantum computing may seem like something from the distant ‘Star Wars’ future. However, researchers in Bristol have successfully demonstrated the teleportation of information over two silicon chips.

The event is significant because it allows for the communication of information between chips at the quantum level. Such transfers of information could massively increase computing speeds while reducing the noise and costs of machines.


The applications for such systems are broad. With information being transferable without interaction, mechanical processes would no longer be necessary. This would drastically increase the speed of processors.

Such processors would also potentially pose a risk to cryptocurrencies. Traditional computers would require hundreds of trillions of operations to break Bitcoin’s SHA-256 encryption. Quantum calculations, however, would require a little over 2 million operations to find the same information.

While this does pose some risk, other factors are certainly at play. A supplemental cryptography protocol could potentially be added to the Bitcoin network via a softfork, which would limit quantum computing effectiveness.

Regardless of the potential for loss, development is a major step forward in technology. Whether Bitcoin will be required to make changes to protect the network, though, remains to be seen.


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Such technology is in reality a threat to the current Bitcoin's technology and who knows Blockchain itself.

I really hope that if this comes to a daily pc life there will another strong cryptgography protocol released in time.

Else we might face ourselves being hacked all over the place.

Ofc it would still take time but who knows how much time we talking about against applying another strong protection layer till the next hack.

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January 07, 2020, 05:16:45 PM
 #2

It would be an interesting event to see whether our technology today can breach the so-called end of the Moore's law, which is projected to be at 5 nanometers for processors. Until now, no tech manufacturers are successful in making the tech available to the common folk, and even if it goes live in all fronts, its processing power would still be insufficient for brute-forcing SHA-256 encryption and other cryptographic algorithms embedded within bitcoin's code, so we're good on that.

As for the current craze for quantum computing achievements, we still haven't reached the point of reproducing lab demonstrations in a consistent level, and we're still on the tip of the whole iceberg in quantum computing. Google may have done it, TSMC may have started their own researches on it, but we're still far from having a full-blown quantum computer that could topple major cryptographic algorithms out there embedded on most security systems worldwide. Sure, there's a possibility that quantum computing disrupts bitcoin's private keys, but the question is when will these computers be able to do so? Perhaps by then, we have switched to a quantum-resistant algorithm to completely negate the possibility of brute-forcing within our realms.

For now, this is just some crazy tech talk with no real-world implementation and are confined within laboratory conditions. The brains responsible for such researches would find a way to make it useful in fields of Science and Technology, and not using these precious resource to brute-forcing bitcoin or any other cryptocurrency, that's for sure.

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January 07, 2020, 06:37:30 PM
 #3

Such technology is in reality a threat to the current Bitcoin's technology and who knows Blockchain itself.

I really hope that if this comes to a daily pc life there will another strong cryptgography protocol released in time.

Else we might face ourselves being hacked all over the place.

Ofc it would still take time but who knows how much time we talking about against applying another strong protection layer till the next hack.

I didn't read the article, but if i were to base myself in your topic title, this would be a very interesting achievement.

As for breaking classic crypto goes, it probably does not change things much.

Entanglement, is a form of communication. Get a pair of atoms separate them, and when you move one, the other moves as well.

This could for example increase the speed within a cpu, since it wouldn't be limited by electrons "pushing" over wires. It could also ease cpu construction, but I'm not sure of the difficulty building quantum computers. Imagine before you had to have all your qbits connected by wire, but now you don't need to and the thing still works.

You don't need "another strong protection layer", because the current proposal would work the same. This is a good news (if true) for the advancement of quantum computing, but its only a very small step. It changes nothing regarding Bitcoin.

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January 08, 2020, 12:42:17 AM
 #4

I don't know why there is a misconception that because there is a possibility that the first quantum computer could be created, it will end cryptography as we know it, which is a complete misunderstanding.

Quantum computers do not process bits in the same way that normal computers do, in other words, developments on these computers are different so even if they exist it will take time to run complex programs on them.

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January 08, 2020, 01:05:04 AM
 #5

If quantum computing really does break sha256 the issue won't be if we will be able to fork and adapt but it will be a big fight over which fork people follow. This community can't agree on anything and there are always people looking to get power when it is up for grabs (we saw this with the block size debate and the following forks). Hopefully there is a good concensus and we don't have this issue but I doubt that.

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January 08, 2020, 01:11:21 AM
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 #6

quantum is not some alternate universe theory or splitting atoms theory
its about taking a different measure that has not been measured/seen/used before.

for instance classical computers are binary. just 0 and 1.
to simplify quantum computers its 0123 which some are using the extra 2 options as a and/or of 0 1
others use it to make dna analysis easier as dna gtac has 4 options which a binary bit couldnt handle alone to identify as either  g or t or a or c. (binary would need 2 bits for same identity)

the other thing they are doing is instead of doing it based on electrons vibrating against each other. they are using photons. (beams of light instead of electric)

the whole sci-fi alternate universe crap is just to keep people confused so industry can get a few steps ahead of the game before it becomes common practice.

yes photons are faster then electrons.. its like the difference of fibre optics vs copper wire internet.
there is no illusion or magic occuring in quantum. its just changing what and how things are measured/analysed/stored/transferred

..
as for quantum computers risk to cryptography.
cryptographic puzzles based on pure binary logic. such as sha. are only 2x inferior to quantum. where as other forms such as elliptic curves which are more vector based and not so efficient in binary can be even more efficient in quantum


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January 08, 2020, 01:14:28 AM
 #7

BITCOIN IS ON BORROWED TIME !!!!    The writing is on the wall.  Bitcoin will be a HUGE target to be cracked by quantum computing.

The fact that someone is talking about this tells you this will be one of Quantum Computing first targets 😣😣😣😣

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January 08, 2020, 01:22:11 AM
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BITCOIN IS ON BORROWED TIME !!!!    The writing is on the wall.  Bitcoin will be a HUGE target to be cracked by quantum computing.

The fact that someone is talking about this tells you this will be one of Quantum Computing first targets 😣😣😣😣

Hard Facts

bitcoin is not on borrowed time of someone cracking encryption. but someone having a more efficient brute forcing method
no one is going to waste a billion dollar machine to brute force a key of only $1m value.
and no quantum wont make it an instantaneous break of key. just an efficient bruteforce

relax just a little. what would take a billion years in binary might take many years in quantum. so its not a dont leave funds in a key for more than 2 minutes risk. its a just for pure luck chance. move keys once a year if your hoarding large value just to make bruteforcers see its not worth wasting a few years on a keypair

by the way. bitcoin value is not fixed to peoples lives. shops and employers are not demanded to use it.
its fiat that would be a target, simply because people are forced to use it they cant just change the parameters of fiat easily. meaning its a better target.

but thats if a nefarious user had a quantum computer and plenty of spare time. and didnt care about getting arrested for hacking/theft.

so cool down your fears. its not like those with quantum computers can hide their equipment under their bed

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January 08, 2020, 01:23:49 AM
 #9

BITCOIN IS ON BORROWED TIME !!!!    The writing is on the wall.  Bitcoin will be a HUGE target to be cracked by quantum computing.

The fact that someone is talking about this tells you this will be one of Quantum Computing first targets 😣😣😣😣

Hard Facts
People have been talking what ifs for the entire history of mankind, more likely they would focus on military or banking encryption and be able to break entire financial systems and economies of entire countries, that shit is worth way more than entire marketcap of bitcoin, you are just annoying and talking out your ass.

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January 08, 2020, 02:22:25 PM
Last edit: January 08, 2020, 03:13:45 PM by Cnut237
 #10

-snip-
I posted about this too, but no responses - probably because it's being talked about here Smiley


Quantum computing [...] The applications for such systems are broad.
But not limitless. The exponential scaling nature of qubits makes certain problems (e.g. prime factoring) trivial, but QC isn't a one-stop-shop solution to everything. It's not always faster than classical in all circumstances for all problems.


Such processors would also potentially pose a risk to cryptocurrencies. Traditional computers would require hundreds of trillions of operations to break Bitcoin’s SHA-256 encryption. Quantum calculations, however, would require a little over 2 million operations to find the same information.

While this does pose some risk, other factors are certainly at play. A supplemental cryptography protocol could potentially be added to the Bitcoin network via a softfork, which would limit quantum computing effectiveness.

Regardless of the potential for loss, development is a major step forward in technology. Whether Bitcoin will be required to make changes to protect the network, though, remains to be seen.

I had a go last year at summarising Bitcoin's vulnerabilities to quantum computers (Grover/Shaw etc), as well as outlining a few solutions. Please have a read if you're interested. I'd really value further discussion, as there are only a few different contributors to that thread!



--------------------------------------------------------------------------

@franky1:

for instance classical computers are binary. just 0 and 1.
to simplify quantum computers its 0123 which some are using the extra 2 options as a and/or of 0 1

I'm sure we've discussed this in the ivory tower previously, and I still maintain that this 0-3 thing absolutely isn't true. I'm not trying to be confrontational, but I'm sure there is a misunderstanding here.

A qubit is a superposition of two states, and so is analogous to the classical 0/1 'bit'. A qubit still resolves to 0 or 1, there aren't any additional final results. The power of QCs is in the superposition.

When you talk about 4 states, this is no longer qubits, it's qudits, which means a more complex system - a qubit is the superposition of 2 classical states, a qudit is the extension of this to any number of superposed states 'd' that is higher than 2 (qudits = quantum 'd'igits).

I suspect you are talking about a d=4 system as a superposition of 4 states (a system with 4 inputs), but there's no reason that d has to be 4.

If you are talking about qubit resolution to 4 outcomes, then this just means a 2-qubit system, 22 outcomes. Throw in an extra qubit, and you have 23=8 outcomes.

An example might help to illustrate the point:

Take a classical 2-bit computer. It can be in 4 states, 00, 01, 10, or 11. But it can only be in one of these states at any one time. The classical computer can only process one input at a time. When trying to find a computational solution, this is analogous to trying one path through a maze. If it's not the correct route, then you go back to the start and try another path. One at a time.

In a quantum computer, two qubits also represent the same 4 states of 00, 01, 10, and 11. The difference here is that because of quantum superposition, the qubits can represent all four states at the same time. This means you can try 4 different paths through the maze simultaneously. If none of these is the correct route, you go back and start again and try another 4 simultaneously. If you want to try more paths, you scale it up. Add a third qubit, now you can try 8 paths. Add a 4th qubit, you can now try 16 paths simultaneously. So with a 4-qubit quantum computer, we are essentially running 16 classical computers at the same time.

This is where the extra power comes from, not the outputs, but the quantum superposition of the states. You still have the same number of outputs as with a classical computer, it's just that with quantum mechanics you can find a quicker route to the solution of certain problems, such as prime factoring (not all problems).


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