(I think this question will be blocked for being not specific, so help me edit it, thanks)
(I will present Facts [1] and Facts [2] which will help organize my ideas before my question)
Facts [1]: (the following information is common sense)
One possible attack is: (reproducing the words in the blog braiins)
…public keys are revealed when transactions are broadcasted to the
mempool, even BEFORE they get added to the blockchain.If an attacker could reverse the signature and get the associated
private key during this window before the transaction gets included
on-chain, they could then broadcast a higher-fee transaction sending
the coins to themselves instead.
Facts [2]: (the difficult part of the question will start here)
The paper A Survey on Various Attacks in Bitcoin and Cryptocurrency describes 7 attacks:
A. Denial-of-service Attack
B. Double Spending Attack
C. Sybil Attack
D. Eclipse Attack
E. Selfish mining Attack
F. Fork after Withholding Attack
G. Block Withholding Attack
I finally arrive to my question:
Using a quantum computer to break SHA-256/ECDSA:
Are there other tricks to pull off a 51% attack throughout any of the (A-G) strategies?
(I have tried to find any not widespreadly diffuse knowledge, like
For example 1: In Eclipse attack, the IP address of victim person is blocked or redirected towards a competitor. IPsec uses SHA. So I think it is possible to find a vulnerability this way, but I have no idea how.
For example 2: It is written in the paper Off-Path TCP Exploits of the Mixed IPID Assignment:
“TCP connections DoS attack is particularly applicable to compromising applications secured by encrypted traffic, e.g., HTTPS and SSH”.
I have tried to guess which quantum attack to sha256 is able to attack bitcoin, but I am not a computer scientist so please ANY information is wellcome)
