Linked Questions

10
votes
2answers
2k views

How vulnerable is bitcoin to quantum algorithms? [duplicate]

Assuming that quantum computers are implemented some time in the near-ish future, how vulnerable is Bitcoin to decryption via quantum algorithms? For example, Shor's algorithm enables a quantum ...
1
vote
2answers
175 views

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?
0
votes
1answer
52 views

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 ...
0
votes
0answers
20 views

Is the current hashcash proof of work system vulnerable to attack by quantum computer? [duplicate]

I've been caught up in the post-quantum cryptography scene for a little while now, and understand that the RSA or ECC cryptography inherent in a cryptocurrency network can be easily broken by a ...
55
votes
5answers
56k views

What happens if your bitcoin client generates an address identical to another person's?

Here's a what-if scenario: Person A has a Bitcoin address with 25BTC. Person B opens up their Bitcoin client: which may or may not have the complete blockchain (the latter would mean no copies of ...
4
votes
1answer
1k views

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 ...
5
votes
2answers
949 views

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 ...
0
votes
1answer
855 views

Is it true that sending from an address exposes the public key of a bitcoin address?

I just recently learned that your public key + private key is hashed together to form your bitcoin address. Is this true? Can someone please confirm if the following is true: If a bitcoin address ...
4
votes
1answer
266 views

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 ...
2
votes
2answers
98 views

What happens if 1-way functions no longer exist?

Advances in AI and nanobiotech can radically increase intelligence to the point where unsolved mathematical problems get solved. What happens to Bitcoin (and other cryptocurrencies) if ⨕&...
4
votes
1answer
67 views

What positive effects can Quantum Computers have on the Blockchain technology and hence Bitcoin

Quantum Computers We always fear what we do not know. This statement has been proven right throughout the history of mankind and has resulted in significant evolution, even though there was always ...
0
votes
0answers
46 views

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 ...