09-11-2017, 04:12 PM
According to this paper it would require 1000 qubits to break ECC-160.
As I said in my previous post, hashing algorithms are usually not vulnerable to quantum computer attacks, which includes the SHA-2 familiy. I'm not aware of any such attacks for SHA-2. The fact that your "someone that is into cryptography" was even able to come up with some timing makes the claim even more ridiculous because we definitely do not have any kind of computation device available that can break the SHA-2 algorithm. That would be big news.
As I said in my previous post, hashing algorithms are usually not vulnerable to quantum computer attacks, which includes the SHA-2 familiy. I'm not aware of any such attacks for SHA-2. The fact that your "someone that is into cryptography" was even able to come up with some timing makes the claim even more ridiculous because we definitely do not have any kind of computation device available that can break the SHA-2 algorithm. That would be big news.