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Questions tagged [quantum-computing]

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Signature digital algorithm in bitcoin, to what will it change in the future?

in follow-up to the question: 85202 There, @Ugam Kamat wrote ""ECDSA is the first thing that can get vulnerable with quantum computer. signature will need to move to post quantum world much before ...
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Bitcoin Signatures are susceptible to quantum attacks - how exactly and with what practical impact? [duplicate]

@PieterWuille wrote in another thread: "" The hashing algorithm is probably the most quantum-resistant piece of cryptography right now in Bitcoin. Barring any specific breaks, SHA256 and RIPEMD160 ...
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How may bitcoins hash algorithm be secured in the future from quantum computing brute forcing?

Other threads already answer very clearly that quantum comps could easily "break" /attack bitcoins chain. Now: Are there any ideas among the bitcoin devs circulating out there, how to save bitcoin ...
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How single usage of bitcoin address is resistant to quantum computing _and_ replace-by-fee?

It is often said that if a bitcoin user uses addresses only once, then quantum computer cannot compromise their security since the public key is revealed only when the money are actually spent. But ...
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3answers
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What happens to SHA256 based cryptocurrencies when encription break takes no time? [duplicate]

There is 49 qbit quantum processor already, there are predicted trends of time to facror. So what happens to SHA256 based cryptocurrencies when encription break takes no time and all transactions on ...
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1answer
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Are Schnorr signatures quantum-computer resistant?

Here (https://bitcoincore.org/en/2017/03/23/schnorr-signature-aggregation/) it says Schnorr replaces ECDSA, we know that ECDSA can be broken by quantum computers. Can Schnorr be broken by q-computers ...
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1answer
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IOTA quantum resistance

I've read a great deal about the impact of quantum computing on cryptocurrencies in: https://github.com/theQRL/QRL/blob/master/QRL_whitepaper.pdf What effects would a scalable Quantum Computer have ...
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Bitcoin Blockchain in the Quantum computing era

The design and the evolution of quantum computers has been one of the "hot" topics during the last 20 years. My question is about the possible consequences of the rise of quantum computers (through ...
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1answer
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Would quantum computing be able to deanonymize CoinJoin transactions?

Using the worst case scenario of this question, namely: Bitcoin ECDSA algorithm would be broken. Because quantum computers can easily decrypt the private key using the public key, anyone with a ...
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1answer
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Does address-reuse make Bitcoin private keys vulnerable to quantum computing?

Though quantum computing can technically break ECDSA with enough qubits, this has not the greatest implication on btc because public keys are not known as they are protected by the hashing used to ...
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2answers
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Mastercoin vs Quantum Computers [duplicate]

Assuming quantum computers become mature enough to effectively crack elliptic curve cryptography of the type used by bitcoin, is Mastercoin secure?
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Does the block reward get halved every 4 years regardless of hardware advancements?

Is the invention of a faster computer (let's say a quantum computer) or the lack of advancements in computing power (let's say it takes a decade to make any progress greater than incremental increases ...
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Can a Qubit Miner ASIC device be created and what would its impact be on the mining community?

With mining gaining in popularity every day and the raw power of the ASIC devices increasing at a dramatic rate, I wonder what is the next big jump for miners. Qubits, or quantum bits, have already ...
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Can quantum computing improve Bitcoin mining?

Would a D-Wave 2 with 512 qbits be faster than the fastest ASIC when mining bitcoins?
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What effects would a scalable Quantum Computer have on Bitcoin?

A scalable quantum computer is a quantum computer that is easy to extend - adding more (q)bits of memory is not a fundamentally hard problem, and will happen. Or, alternatively, that it follows Moore'...